Simfix

M6 X 16 Hexagon Socket Button Screw 10 Pack ISO 7380-1 A4 Stainless Steel

SKU 7380A406016PK10-SIM
1000+ in stockReady to dispatch
£4.03
Pack size:
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M6 x 16mm button head socket screw in A4 marine grade stainless steel to ISO 7380-1. The wide, low-profile dome head distributes load across a larger bearing surface than a cap screw, ideal for furniture, signage, and decorative or thin-panel fixings. A4 (316) marine grade gives outstanding resistance to saltwater and chloride corrosion - the right choice for coastal, marine, and pool environments. Free next-day UK delivery on orders over £50.
£4.03

M6 x 16mm button head socket screw in A4 marine grade stainless steel to ISO 7380-1. The wide, low-profile dome head distributes load across a larger bearing surface than a cap screw, ideal for furniture, signage, and decorative or thin-panel fixings. A4 (316) marine grade gives outstanding resistance to saltwater and chloride corrosion - the right choice for coastal, marine, and pool environments. Free next-day UK delivery on orders over £50.
  • M6 x 16mm socket button screw marine grade 316 ISO 7380
  • ISO 7380 socket button screw M6 x 16mm A4 marine grade stainless steel, side profile
  • Low-profile button head detail - M6 x 16mm A4 stainless button screw ISO 7380
  • Hexagon Socket Button in a real-life marine application. A rounded A4 socket head for neat exposed fittings.
  • Simfix product label - 7380A406016PK10-SIM
  • Simfix product label - 7380A406016PK50-SIM
M6 x 16mm socket button screw marine grade 316 ISO 7380
ISO 7380 socket button screw M6 x 16mm A4 marine grade stainless steel, side profile
Low-profile button head detail - M6 x 16mm A4 stainless button screw ISO 7380
Hexagon Socket Button in a real-life marine application. A rounded A4 socket head for neat exposed fittings.
Simfix product label - 7380A406016PK10-SIM
Simfix product label - 7380A406016PK50-SIM
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M6 x 16mm socket button screw marine grade 316 ISO 7380 ISO 7380 socket button screw M6 x 16mm A4 marine grade stainless steel, side profile Low-profile button head detail - M6 x 16mm A4 stainless button screw ISO 7380 Hexagon Socket Button in a real-life marine application. A rounded A4 socket head for neat exposed fittings. Simfix product label - 7380A406016PK10-SIM Simfix product label - 7380A406016PK50-SIM
M6 x 16mm socket button screw marine grade 316 ISO 7380 ISO 7380 socket button screw M6 x 16mm A4 marine grade stainless steel, side profile Low-profile button head detail - M6 x 16mm A4 stainless button screw ISO 7380 Hexagon Socket Button in a real-life marine application. A rounded A4 socket head for neat exposed fittings. Simfix product label - 7380A406016PK10-SIM Simfix product label - 7380A406016PK50-SIM

This M6 x 16mm button head socket screw is manufactured to ISO 7380-1 in A4 stainless steel (316 marine grade). ISO 7380-1 specifies a low-profile dome head with an internal hex socket. The wide, shallow head distributes load over a larger bearing area than a standard cap screw of the same thread size, reducing the risk of pull-through in thinner materials. The low profile and smooth dome surface make this the preferred choice for furniture, panel covers, and decorative or visible fixings where a cap screw head would be too prominent.

Typical applications

  • Marine deck hardware, boat fittings, and coastal fabrication
  • Swimming pool surrounds, leisure facilities, and waterside furniture
  • Offshore and saltwater environments needing a low-profile fastener
  • Chemical plant and food processing equipment with hygiene requirements

Available in packs of 10 to 50, with free next-day UK delivery on orders over £50 and 30-day no-quibble returns.

*Photos, diagrams and other images are for illustration only and may not show the exact item supplied. Simfix reserves the right to alter or replace any photo, diagram or image at any time at its sole discretion.

**Orders that cannot be split will be rounded up to the next full pack or box quantity.

Simfix reserves the right to change quantities, stock levels and prices at any time. We accept no liability for the accuracy of dimensional data, DIN/ISO references, technical data, customs tariff codes or EAN barcodes.

Fastener styleButton head screw with hex socket drive
StandardISO 7380-1
MaterialA4 stainless steel (316)
Property classA4
Thread sizeM6
Thread pitch1.0 mm (coarse)
Length16 mm
Head typeButton head socket
Drive typeHex socket (Allen)
Surface finishPlain (no plating)
HS commodity code7318156290
Recommended useMarine

RoHS and REACH compliant.

How do I choose between A2 and A4 stainless steel?

A2 (304) stainless steel suits most indoor, outdoor and workshop jobs. Choose A4 (316) marine grade for coastal, marine, poolside or other chloride-rich environments.

How do I make sure I order the right size?

Check the size in the product title and the standard, material and dimensions in the Product Specification tab. In M8 x 30, M8 is the thread diameter and 30 is the length in millimetres. See our size guide if you need more help.

When will my order arrive?

Orders placed before 4pm Monday-Friday are typically dispatched the same working day and every order is tracked. Next-day delivery is free over £50, or £5.50 below that threshold. Full options are shown at checkout.

What if I order the wrong item?

Email contact@simfix.com within 30 days of delivery with your order number. We will help arrange a refund or replacement. See our refunds information for the full process.

Is checkout secure?

Yes. Checkout is protected by SSL encryption and payments are processed through Shopify's secure checkout and supported payment providers. Simfix does not store your full card details.

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