{"title":"Cup Square Bolts","description":"\u003cp\u003eA cup square bolt, also called a carriage bolt or coach bolt, has a rounded head and a square shoulder underneath that pulls into timber and stops the bolt turning while you tighten the nut. Simfix stocks them to DIN 603 in A2 (304) and A4 (316), from M5 to M16 and from 12mm to 300mm long, depending on diameter.\u003c\/p\u003e\u003cp\u003eUsed for fencing, decking, gates, pergolas and post supports. Choose A2 for inland outdoor work and A4 near the coast or where timber stays wet.\u003c\/p\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eWhat is a cup square bolt?\u003c\/h3\u003e\u003cp\u003eA cup square bolt has a rounded (cup) head and a square section directly under it. The square shoulder pulls into timber as you tighten the nut, stopping the bolt from spinning. It is also called a carriage bolt or coach bolt. Simfix stocks cup square bolts to DIN 603 in A2 (304) and A4 (316), M5 to M16.\u003c\/p\u003e\u003ch3\u003eCarriage bolt vs coach bolt vs coach screw: what's the difference?\u003c\/h3\u003e\u003cp\u003eCarriage bolt and coach bolt are two UK names for the same fastener, called a cup square bolt at Simfix (DIN 603): a bolt with a rounded head, tightened with a nut. A coach screw has a hex head and a wood screw thread instead of a nut, and is driven with a spanner into a pre-drilled hole, to DIN 571.\u003c\/p\u003e\u003ch3\u003eAre cup square bolts available in A4 (316)?\u003c\/h3\u003e\u003cp\u003eYes. Simfix stocks DIN 603 cup square bolts in A4 (316) from M5 to M16, as well as in A2 (304). Choose A4 for coastal or salt-exposed timber and for timber that stays wet; A2 suits fencing, decking and gates away from the coast.\u003c\/p\u003e\u003ch3\u003eWhat sizes of cup square bolt does Simfix stock?\u003c\/h3\u003e\u003cp\u003eM5, M6, M8, M10, M12 and M16 diameters in both A2 (304) and A4 (316), in lengths from 12mm to 300mm depending on diameter. Each product listing is a single diameter and length, and not every length is stocked at every size and grade.\u003c\/p\u003e\u003cp\u003eSizes, grades and pack quantities vary by product type. Check the individual product listing for the exact specification and current availability.\u003c\/p\u003e","products":[{"product_id":"simfix-cup-square-bolt-din-603-a2-stainless-steel-m6-x-40","title":"M6 X 40 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eM6 x 40mm coach bolt in A2 stainless steel to DIN 603. The domed round head and square neck lock against the timber face, preventing rotation during tightening - ideal for outdoor timber structures, fencing, gates, and garden furniture. A2 (304 grade) gives good corrosion resistance for indoor and non-coastal outdoor use. Free next-day UK delivery on orders over £50.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57124250845559,"sku":"603A206040-D","price":3.62,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57124250878327,"sku":"603A206040-T","price":7.59,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/SIM603A206040_20_2820306040_29.jpg?v=1787229844"},{"product_id":"simfix-cup-square-bolt-din-603-a2-stainless-steel-m6-x-50","title":"M6 X 50 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eM6 x 50mm coach bolt in A2 stainless steel to DIN 603. The domed round head and square neck lock against the timber face, preventing rotation during tightening - ideal for outdoor timber structures, fencing, gates, and garden furniture. A2 (304 grade) gives good corrosion resistance for indoor and non-coastal outdoor use. Free next-day UK delivery on orders over £50.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57124250911095,"sku":"603A206050-D","price":2.74,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57124250943863,"sku":"603A206050-T","price":5.92,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/SIM603A206040_20_2820306040_29_f3f76984-79b8-4292-b9f6-9960cd148df0.jpg?v=1787229867"},{"product_id":"simfix-cup-square-bolt-din-603-a2-stainless-steel-m6-x-60","title":"M6 X 60 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eM6 x 60mm coach bolt in A2 stainless steel to DIN 603. The domed round head and square neck lock against the timber face, preventing rotation during tightening - ideal for outdoor timber structures, fencing, gates, and garden furniture. A2 (304 grade) gives good corrosion resistance for indoor and non-coastal outdoor use. Free next-day UK delivery on orders over £50.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57124250976631,"sku":"603A206060-D","price":3.99,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57124251009399,"sku":"603A206060-T","price":9.51,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/SIM603A206040_20_2820306040_29_a977f046-4fc6-4bf0-9436-356a3f8504c6.jpg?v=1787229903"},{"product_id":"simfix-cup-square-bolt-din-603-a2-stainless-steel-m6-x-75","title":"M6 X 75 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eM6 x 75mm coach bolt in A2 stainless steel to DIN 603. The domed round head and square neck lock against the timber face, preventing rotation during tightening - ideal for outdoor timber structures, fencing, gates, and garden furniture. A2 (304 grade) gives good corrosion resistance for indoor and non-coastal outdoor use. Free next-day UK delivery on orders over £50.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57124251042167,"sku":"603A206075-D","price":4.97,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57124251074935,"sku":"603A206075-T","price":12.71,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/SIM603A206040_20_2820306040_29_fe78482f-282e-49e7-a598-782f599df20e.jpg?v=1787229929"},{"product_id":"simfix-cup-square-bolt-din-603-a2-stainless-steel-m8-x-40","title":"M8 X 40 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eM8 x 40mm coach bolt in A2 stainless steel to DIN 603. The domed round head and square neck lock against the timber face, preventing rotation during tightening - ideal for outdoor timber structures, fencing, gates, and garden furniture. A2 (304 grade) gives good corrosion resistance for indoor and non-coastal outdoor use. Free next-day UK delivery on orders over £50.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57124251107703,"sku":"603A208040-D","price":2.52,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57124251140471,"sku":"603A208040-T","price":6.36,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/SIM603A206040_20_2820306040_29_f8fdd23c-7fb1-4c7c-a934-f2681bb0c6a9.jpg?v=1787229964"},{"product_id":"simfix-cup-square-bolt-din-603-a2-stainless-steel-m8-x-50","title":"M8 X 50 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eM8 x 50mm coach bolt in A2 stainless steel to DIN 603. The domed round head and square neck lock against the timber face, preventing rotation during tightening - ideal for outdoor timber structures, fencing, gates, and garden furniture. A2 (304 grade) gives good corrosion resistance for indoor and non-coastal outdoor use. Free next-day UK delivery on orders over £50.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57124251173239,"sku":"603A208050-D","price":2.72,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57124251206007,"sku":"603A208050-T","price":7.37,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/SIM603A206040_20_2820306040_29_9ddbb9bb-14f9-4977-b77f-9c72a6bebcca.jpg?v=1787230000"},{"product_id":"simfix-cup-square-bolt-din-603-a2-stainless-steel-m8-x-60","title":"M8 X 60 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eM8 x 60mm coach bolt in A2 stainless steel to DIN 603. The domed round head and square neck lock against the timber face, preventing rotation during tightening - ideal for outdoor timber structures, fencing, gates, and garden furniture. A2 (304 grade) gives good corrosion resistance for indoor and non-coastal outdoor use. Free next-day UK delivery on orders over £50.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57124251238775,"sku":"603A208060-D","price":3.82,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57124251271543,"sku":"603A208060-T","price":11.19,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/SIM603A206040_20_2820306040_29_19416cd5-2a0e-4852-b0e0-877662388f37.jpg?v=1787230025"},{"product_id":"simfix-cup-square-bolt-din-603-a2-stainless-steel-m8-x-75","title":"M8 X 75 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eM8 x 75mm coach bolt in A2 stainless steel to DIN 603. The domed round head and square neck lock against the timber face, preventing rotation during tightening - ideal for outdoor timber structures, fencing, gates, and garden furniture. A2 (304 grade) gives good corrosion resistance for indoor and non-coastal outdoor use. Free next-day UK delivery on orders over £50.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57124251304311,"sku":"603A208075-D","price":3.9,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57124251337079,"sku":"603A208075-T","price":12.26,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/SIM603A206040_20_2820306040_29_3ce2f1a5-40ec-418c-a7ac-ca898fc15f8b.jpg?v=1787230061"},{"product_id":"simfix-cup-square-bolt-din-603-a2-stainless-steel-m8-x-100","title":"M8 X 100 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eM8 x 100mm coach bolt in A2 stainless steel to DIN 603. The domed round head and square neck lock against the timber face, preventing rotation during tightening - ideal for outdoor timber structures, fencing, gates, and garden furniture. A2 (304 grade) gives good corrosion resistance for indoor and non-coastal outdoor use. Free next-day UK delivery on orders over £50.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57124251369847,"sku":"603A208100-D","price":4.59,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57124251402615,"sku":"603A208100-T","price":15.16,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/SIM603A206040_20_2820306040_29_166c4bb8-4ca5-4255-a6fc-26667475aaa1.jpg?v=1787230086"},{"product_id":"simfix-cup-square-bolt-din-603-a2-stainless-steel-m10-x-50","title":"M10 X 50 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eM10 x 50mm coach bolt in A2 stainless steel to DIN 603. The domed round head and square neck lock against the timber face, preventing rotation during tightening - ideal for outdoor timber structures, fencing, gates, and garden furniture. A2 (304 grade) gives good corrosion resistance for indoor and non-coastal outdoor use. Free next-day UK delivery on orders over £50.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57124251435383,"sku":"603A210050-D","price":4.59,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57124251468151,"sku":"603A210050-T","price":14.61,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/SIM603A206040_20_2820306040_29_898efdc0-0db4-4063-914f-253d7777a6be.jpg?v=1787230128"},{"product_id":"simfix-cup-square-bolt-din-603-a2-stainless-steel-m10-x-75","title":"M10 X 75 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eM10 x 75mm coach bolt in A2 stainless steel to DIN 603. The domed round head and square neck lock against the timber face, preventing rotation during tightening - ideal for outdoor timber structures, fencing, gates, and garden furniture. A2 (304 grade) gives good corrosion resistance for indoor and non-coastal outdoor use. Free next-day UK delivery on orders over £50.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57124251500919,"sku":"603A210075-D","price":6.45,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57124251533687,"sku":"603A210075-T","price":23.29,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/SIM603A206040_20_2820306040_29_2ffa3483-82b0-4fac-9d3a-3e19b5a4c91e.jpg?v=1787230159"},{"product_id":"simfix-cup-square-bolt-din-603-a2-stainless-steel-m10-x-100","title":"M10 X 100 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eM10 x 100mm coach bolt in A2 stainless steel to DIN 603. The domed round head and square neck lock against the timber face, preventing rotation during tightening - ideal for outdoor timber structures, fencing, gates, and garden furniture. A2 (304 grade) gives good corrosion resistance for indoor and non-coastal outdoor use. Free next-day UK delivery on orders over £50.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57124251566455,"sku":"603A210100-D","price":8.1,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57124251599223,"sku":"603A210100-T","price":31.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/SIM603A206040_20_2820306040_29_02db7f99-e96f-46c6-b449-185197ef47c3.jpg?v=1787230184"},{"product_id":"simfix-cup-square-bolt-din-603-a2-stainless-steel-m10-x-130","title":"M10 X 130 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eM10 x 130mm coach bolt in A2 stainless steel to DIN 603. The domed round head and square neck lock against the timber face, preventing rotation during tightening - ideal for outdoor timber structures, fencing, gates, and garden furniture. A2 (304 grade) gives good corrosion resistance for indoor and non-coastal outdoor use. Free next-day UK delivery on orders over £50.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57124251828599,"sku":"603A210130-D","price":9.54,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57124251861367,"sku":"603A210130-T","price":38.53,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/SIM603A206040_20_2820306040_29_71de283a-996a-498e-823b-a0d8ebccafd0.jpg?v=1787230220"},{"product_id":"simfix-cup-square-bolt-din-603-a2-stainless-steel-m12-x-75","title":"M12 X 75 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eM12 x 75mm coach bolt in A2 stainless steel to DIN 603. The domed round head and square neck lock against the timber face, preventing rotation during tightening - ideal for outdoor timber structures, fencing, gates, and garden furniture. A2 (304 grade) gives good corrosion resistance for indoor and non-coastal outdoor use. Free next-day UK delivery on orders over £50.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57124251926903,"sku":"603A212075-D","price":14.71,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57124251959671,"sku":"603A212075-T","price":64.23,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/SIM603A206040_20_2820306040_29_cda32cbc-cd75-4003-8891-6c6f73bedafe.jpg?v=1787230246"},{"product_id":"simfix-cup-square-bolt-din-603-a2-stainless-steel-m12-x-100","title":"M12 X 100 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eM12 x 100mm coach bolt in A2 stainless steel to DIN 603. The domed round head and square neck lock against the timber face, preventing rotation during tightening - ideal for outdoor timber structures, fencing, gates, and garden furniture. A2 (304 grade) gives good corrosion resistance for indoor and non-coastal outdoor use. Free next-day UK delivery on orders over £50.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57124252025207,"sku":"603A212100-D","price":9.73,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57124252057975,"sku":"603A212100-T","price":41.61,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/SIM603A206040_20_2820306040_29_3728f101-2745-4734-99e9-4460d78d2f25.jpg?v=1787230284"},{"product_id":"m10-x-100-cup-square-bolt-din-603-a4-stainless-steel","title":"M10 X 100 Cup Square Bolt DIN 603 A4 Stainless Steel","description":"\u003cp\u003eThis M10 x 100mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A4 stainless steel (316 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A4-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A4-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505072152951,"sku":"603A410100-D","price":19.48,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505072185719,"sku":"603A410100-T","price":86.15,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-105-cup-square-bolt-din-603-a2-stainless-steel","title":"M10 X 105 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eThis M10 x 105mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A2 stainless steel (304 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A2-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A2-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505072218487,"sku":"603A210105-D","price":15.77,"currency_code":"GBP","in_stock":false},{"title":"Pack of 50","offer_id":57505072251255,"sku":"603A210105-T","price":72.27,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-110-cup-square-bolt-din-603-a2-stainless-steel","title":"M10 X 110 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eThis M10 x 110mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A2 stainless steel (304 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A2-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A2-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns. For coastal, marine, or chloride-rich environments, Simfix A4 (316 grade) equivalents are available.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505072284023,"sku":"603A210110-D","price":5.92,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505072316791,"sku":"603A210110-T","price":22.65,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-110-cup-square-bolt-din-603-a4-stainless-steel","title":"M10 X 110 Cup Square Bolt DIN 603 A4 Stainless Steel","description":"\u003cp\u003eThis M10 x 110mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A4 stainless steel (316 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A4-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A4-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505072349559,"sku":"603A410110-D","price":20.59,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505072382327,"sku":"603A410110-T","price":92.23,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-120-cup-square-bolt-din-603-a2-stainless-steel","title":"M10 X 120 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eThis M10 x 120mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A2 stainless steel (304 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A2-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A2-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns. For coastal, marine, or chloride-rich environments, Simfix A4 (316 grade) equivalents are available.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505072415095,"sku":"603A210120-D","price":8.81,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505072447863,"sku":"603A210120-T","price":34.71,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-120-cup-square-bolt-din-603-a4-stainless-steel","title":"M10 X 120 Cup Square Bolt DIN 603 A4 Stainless Steel","description":"\u003cp\u003eThis M10 x 120mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A4 stainless steel (316 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A4-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A4-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505072480631,"sku":"603A410120-D","price":22.37,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505072513399,"sku":"603A410120-T","price":101.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-130-cup-square-bolt-din-603-a4-stainless-steel","title":"M10 X 130 Cup Square Bolt DIN 603 A4 Stainless Steel","description":"\u003cp\u003eThis M10 x 130mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A4 stainless steel (316 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A4-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A4-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505072546167,"sku":"603A410130-D","price":29.19,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505072578935,"sku":"603A410130-T","price":139.41,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-140-cup-square-bolt-din-603-a2-stainless-steel","title":"M10 X 140 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eThis M10 x 140mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A2 stainless steel (304 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A2-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A2-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns. For coastal, marine, or chloride-rich environments, Simfix A4 (316 grade) equivalents are available.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505072611703,"sku":"603A210140-D","price":9.49,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505072644471,"sku":"603A210140-T","price":39.05,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-140-cup-square-bolt-din-603-a4-stainless-steel","title":"M10 X 140 Cup Square Bolt DIN 603 A4 Stainless Steel","description":"\u003cp\u003eThis M10 x 140mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A4 stainless steel (316 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A4-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A4-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505072677239,"sku":"603A410140-D","price":24.34,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505072710007,"sku":"603A410140-T","price":112.82,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-150-cup-square-bolt-din-603-a2-stainless-steel","title":"M10 X 150 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eThis M10 x 150mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A2 stainless steel (304 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A2-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A2-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns. For coastal, marine, or chloride-rich environments, Simfix A4 (316 grade) equivalents are available.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505072742775,"sku":"603A210150-D","price":10.96,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505072775543,"sku":"603A210150-T","price":45.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-150-cup-square-bolt-din-603-a4-stainless-steel","title":"M10 X 150 Cup Square Bolt DIN 603 A4 Stainless Steel","description":"\u003cp\u003eThis M10 x 150mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A4 stainless steel (316 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A4-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A4-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505072808311,"sku":"603A410150-D","price":27.42,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505072841079,"sku":"603A410150-T","price":129.73,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-155-cup-square-bolt-din-603-a2-stainless-steel","title":"M10 X 155 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eThis M10 x 155mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A2 stainless steel (304 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A2-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A2-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505072873847,"sku":"603A210155-D","price":11.31,"currency_code":"GBP","in_stock":false},{"title":"Pack of 50","offer_id":57505072906615,"sku":"603A210155-T","price":49.25,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-16-cup-square-bolt-din-603-a2-stainless-steel","title":"M10 X 16 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eThis M10 x 16mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A2 stainless steel (304 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A2-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A2-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505072939383,"sku":"603A210016-D","price":6.17,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505072972151,"sku":"603A210016-T","price":19.01,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-160-cup-square-bolt-din-603-a2-stainless-steel","title":"M10 X 160 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eThis M10 x 160mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A2 stainless steel (304 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A2-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A2-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns. For coastal, marine, or chloride-rich environments, Simfix A4 (316 grade) equivalents are available.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505073004919,"sku":"603A210160-D","price":8.19,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505073037687,"sku":"603A210160-T","price":40.94,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-160-cup-square-bolt-din-603-a4-stainless-steel","title":"M10 X 160 Cup Square Bolt DIN 603 A4 Stainless Steel","description":"\u003cp\u003eThis M10 x 160mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A4 stainless steel (316 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A4-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A4-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 5 to 25, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 5","offer_id":57505073070455,"sku":"603A410160-D","price":21.12,"currency_code":"GBP","in_stock":true},{"title":"Pack of 25","offer_id":57505073103223,"sku":"603A410160-T","price":95.15,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-180-cup-square-bolt-din-603-a2-stainless-steel","title":"M10 X 180 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eThis M10 x 180mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A2 stainless steel (304 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A2-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A2-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns. For coastal, marine, or chloride-rich environments, Simfix A4 (316 grade) equivalents are available.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505073135991,"sku":"603A210180-D","price":7.85,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505073168759,"sku":"603A210180-T","price":32.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-180-cup-square-bolt-din-603-a4-stainless-steel","title":"M10 X 180 Cup Square Bolt DIN 603 A4 Stainless Steel","description":"\u003cp\u003eThis M10 x 180mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A4 stainless steel (316 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A4-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A4-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505073201527,"sku":"603A410180-D","price":23.64,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505073234295,"sku":"603A410180-T","price":110.75,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-20-cup-square-bolt-din-603-a2-stainless-steel","title":"M10 X 20 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eThis M10 x 20mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A2 stainless steel (304 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A2-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A2-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns. For coastal, marine, or chloride-rich environments, Simfix A4 (316 grade) equivalents are available.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505073299831,"sku":"603A210020-D","price":4.62,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505073332599,"sku":"603A210020-T","price":12.81,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-20-cup-square-bolt-din-603-a4-stainless-steel","title":"M10 X 20 Cup Square Bolt DIN 603 A4 Stainless Steel","description":"\u003cp\u003eThis M10 x 20mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A4 stainless steel (316 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A4-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A4-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505073365367,"sku":"603A410020-D","price":12.03,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505073398135,"sku":"603A410020-T","price":45.22,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-200-cup-square-bolt-din-603-a2-stainless-steel","title":"M10 X 200 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eThis M10 x 200mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A2 stainless steel (304 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A2-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A2-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505073430903,"sku":"603A210200-D","price":13.53,"currency_code":"GBP","in_stock":false},{"title":"Pack of 50","offer_id":57505073463671,"sku":"603A210200-T","price":59.37,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-220-cup-square-bolt-din-603-a2-stainless-steel","title":"M10 X 220 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eThis M10 x 220mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A2 stainless steel (304 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A2-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A2-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 5 to 25, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 5","offer_id":57505073496439,"sku":"603A210220-D","price":7.68,"currency_code":"GBP","in_stock":true},{"title":"Pack of 25","offer_id":57505073529207,"sku":"603A210220-T","price":30.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-240-cup-square-bolt-din-603-a2-stainless-steel","title":"M10 X 240 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eThis M10 x 240mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A2 stainless steel (304 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A2-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A2-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 5 to 25, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 5","offer_id":57505073561975,"sku":"603A210240-D","price":8.32,"currency_code":"GBP","in_stock":false},{"title":"Pack of 25","offer_id":57505073594743,"sku":"603A210240-T","price":34.92,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-25-cup-square-bolt-din-603-a2-stainless-steel","title":"M10 X 25 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eThis M10 x 25mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A2 stainless steel (304 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A2-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A2-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns. For coastal, marine, or chloride-rich environments, Simfix A4 (316 grade) equivalents are available.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505073627511,"sku":"603A210025-D","price":3.51,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505073660279,"sku":"603A210025-T","price":10.25,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-25-cup-square-bolt-din-603-a4-stainless-steel","title":"M10 X 25 Cup Square Bolt DIN 603 A4 Stainless Steel","description":"\u003cp\u003eThis M10 x 25mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A4 stainless steel (316 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A4-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A4-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505073693047,"sku":"603A410025-D","price":11.06,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505073725815,"sku":"603A410025-T","price":39.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-260-cup-square-bolt-din-603-a2-stainless-steel","title":"M10 X 260 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eThis M10 x 260mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A2 stainless steel (304 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A2-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A2-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 5 to 25, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 5","offer_id":57505073758583,"sku":"603A210260-D","price":13.24,"currency_code":"GBP","in_stock":true},{"title":"Pack of 25","offer_id":57505073791351,"sku":"603A210260-T","price":57.96,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-280-cup-square-bolt-din-603-a2-stainless-steel","title":"M10 X 280 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eThis M10 x 280mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A2 stainless steel (304 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A2-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A2-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 5 to 25, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 5","offer_id":57505073824119,"sku":"603A210280-D","price":25.96,"currency_code":"GBP","in_stock":true},{"title":"Pack of 25","offer_id":57505073856887,"sku":"603A210280-T","price":123.74,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-30-cup-square-bolt-din-603-a2-stainless-steel","title":"M10 X 30 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eThis M10 x 30mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A2 stainless steel (304 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A2-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A2-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns. For coastal, marine, or chloride-rich environments, Simfix A4 (316 grade) equivalents are available.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505074020727,"sku":"603A210030-D","price":2.88,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505074053495,"sku":"603A210030-T","price":8.2,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-30-cup-square-bolt-din-603-a4-stainless-steel","title":"M10 X 30 Cup Square Bolt DIN 603 A4 Stainless Steel","description":"\u003cp\u003eThis M10 x 30mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A4 stainless steel (316 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A4-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A4-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505074086263,"sku":"603A410030-D","price":6.4,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505074119031,"sku":"603A410030-T","price":21.98,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-300-cup-square-bolt-din-603-a2-stainless-steel","title":"M10 X 300 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eThis M10 x 300mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A2 stainless steel (304 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A2-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A2-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 5 to 25, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 5","offer_id":57505074151799,"sku":"603A210300-D","price":17.64,"currency_code":"GBP","in_stock":true},{"title":"Pack of 25","offer_id":57505074184567,"sku":"603A210300-T","price":79.71,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-35-cup-square-bolt-din-603-a2-stainless-steel","title":"M10 X 35 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eThis M10 x 35mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A2 stainless steel (304 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A2-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A2-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns. For coastal, marine, or chloride-rich environments, Simfix A4 (316 grade) equivalents are available.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505074250103,"sku":"603A210035-D","price":5.08,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505074282871,"sku":"603A210035-T","price":15.21,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-35-cup-square-bolt-din-603-a4-stainless-steel","title":"M10 X 35 Cup Square Bolt DIN 603 A4 Stainless Steel","description":"\u003cp\u003eThis M10 x 35mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A4 stainless steel (316 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A4-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A4-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505074315639,"sku":"603A410035-D","price":15.54,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505074348407,"sku":"603A410035-T","price":64.53,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-40-cup-square-bolt-din-603-a2-stainless-steel","title":"M10 X 40 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eThis M10 x 40mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A2 stainless steel (304 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A2-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A2-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns. For coastal, marine, or chloride-rich environments, Simfix A4 (316 grade) equivalents are available.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505074413943,"sku":"603A210040-D","price":5.33,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505074446711,"sku":"603A210040-T","price":16.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-40-cup-square-bolt-din-603-a4-stainless-steel","title":"M10 X 40 Cup Square Bolt DIN 603 A4 Stainless Steel","description":"\u003cp\u003eThis M10 x 40mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A4 stainless steel (316 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A4-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A4-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505074479479,"sku":"603A410040-D","price":6.19,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505074512247,"sku":"603A410040-T","price":22.88,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-45-cup-square-bolt-din-603-a2-stainless-steel","title":"M10 X 45 Cup Square Bolt DIN 603 A2 Stainless Steel","description":"\u003cp\u003eThis M10 x 45mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A2 stainless steel (304 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A2-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A2-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns. For coastal, marine, or chloride-rich environments, Simfix A4 (316 grade) equivalents are available.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505074545015,"sku":"603A210045-D","price":6.6,"currency_code":"GBP","in_stock":true},{"title":"Pack of 50","offer_id":57505074577783,"sku":"603A210045-T","price":24.07,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"},{"product_id":"m10-x-45-cup-square-bolt-din-603-a4-stainless-steel","title":"M10 X 45 Cup Square Bolt DIN 603 A4 Stainless Steel","description":"\u003cp\u003eThis M10 x 45mm coach bolt (cup square head bolt) is manufactured to DIN 603 in A4 stainless steel (316 grade). DIN 603 specifies a domed round head with a small square neck directly below the head. Property class A4-70 indicates a minimum tensile strength of 700 MPa - stronger than standard A4-50 and suited to structural fixings where higher clamping force is needed. When drawn into timber, the square neck embeds into the timber face and locks the bolt against rotation, so only the nut needs a spanner during tightening. The smooth domed head on the visible face reduces snag risk and gives a neat appearance.\u003c\/p\u003e\u003ch3\u003eTypical applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTimber-to-timber and timber-to-steel connections with a flush round head\u003c\/li\u003e\n\u003cli\u003eGarden gates, fencing panels, and agricultural timber structures\u003c\/li\u003e\n\u003cli\u003ePlay equipment, outdoor furniture, and landscape installations\u003c\/li\u003e\n\u003cli\u003ePergolas, decking subframes, and structural outdoor joinery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAvailable in packs of 10 to 50, with free next working day delivery on UK orders over £50 and 30-day returns.\u003c\/p\u003e","brand":"Simfix","offers":[{"title":"Pack of 10","offer_id":57505074610551,"sku":"603A410045-D","price":12.65,"currency_code":"GBP","in_stock":false},{"title":"Pack of 50","offer_id":57505074643319,"sku":"603A410045-T","price":48.65,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/4728\/4855\/files\/simfix-20308050_1.png?v=1789550392"}],"url":"https:\/\/simfix.com\/collections\/cup-square-bolts.oembed?page=7","provider":"Simfix","version":"1.0","type":"link"}