Complete the fixing

Matching nuts and washers in the same size, grade and thread as this screw.

M10 X 12 Hex Socket Countersunk ISO 10642 A2 Stainless Steel

M10 hexagon nut A2 stainless DIN 934 M10 Hexagon Full Nut DIN 934 A2 Stainless Steel

M10 nyloc nut A2 stainless DIN 985 M10 Nylon Insert Nut DIN 985 A2 Stainless Steel

M10 flat washer Form A A2 stainless DIN 125-A M10 Flat Washer, Form A DIN 125-A A2 Stainless Steel

Total for selected

This M10 x 12mm socket countersunk screw is manufactured to ISO 10642 in A2 stainless steel (304 grade). ISO 10642 specifies a 90 degree countersunk head driven by an internal hexagon socket, allowing the head to finish flush with the work surface. The countersunk head draws into a matching 90 degree seat and finishes level with the surface, leaving nothing to catch on while still taking the higher torque an internal socket allows.

Typical applications

  • Flush fixings where a protruding head would obstruct or snag
  • Machine guards, panels, and access covers
  • Furniture and shopfitting where appearance matters
  • Sliding or moving assemblies needing a clear surface

Available in packs of 10 to 50, with free next-day UK delivery on orders over £50 and 30-day no-quibble returns. For coastal, marine, or chloride-rich environments, Simfix A4 (316 grade) equivalents are available.

*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 styleCountersunk screw with hex socket drive
StandardISO 10642
MaterialA2 stainless steel (304)
Property classA2
Thread sizeM10
Thread pitch1.5 mm (coarse)
Length12 mm
Head typeCountersunk Flat Head
Drive typeHex socket
Surface finishPlain (no plating)
Recommended useWorkshop

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 3:30pm 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.

  • Free next-day delivery over £50

  • Orders Before 3:30pm Ship Today

  • Secure SSL Checkout

  • No-Return Refunds