This M12 full hex nut is manufactured to DIN 934 in A2 stainless steel (304 grade). DIN 934 (ISO 4032) is the most widely specified general-purpose hex nut standard, with defined width across flats, height, and metric coarse thread tolerance to ensure consistent fit across suppliers. The full-height hex form provides maximum thread engagement and clamping force compared with thin (jam) nuts - suited to joints where full load-bearing capacity is required. Compatible with any M12 bolt, machine screw, or threaded rod conforming to the same metric coarse pitch specification. Where vibration resistance is a concern, pair with a DIN 985 nyloc nut on the reverse or use a spring washer under the nut face.

Typical applications

  • General indoor and outdoor fastening assemblies with any matching bolt or stud
  • Electronics, instrumentation, and light mechanical fittings
  • Furniture hardware, hinge plates, and cabinetry
  • Workshop, engineering, and maintenance applications in non-coastal environments

Available in packs of 20 to 100, 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 styleFull hexagon nut
StandardDIN 934
MaterialA2 stainless steel (304)
Property classA2-70
Thread sizeM12
Thread pitch1.75 mm (coarse)
Head typeHexagon
Drive typeExternal hex (spanner)
Surface finishPlain (no plating)
HS commodity code7318163990
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 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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