This M10 x 30mm non-serrated hex flange screw is manufactured to DIN 6921 in A2 stainless steel (304 grade). DIN 6921 specifies a hex head bolt with an integral washer flange below the head. The non-serrated flange distributes the clamping load over a large circular bearing surface without cutting into the parent material - eliminating the need for a separate washer while providing a wider bearing face than a standard hex head bolt of the same size. Property class A2-70 specifies a minimum tensile strength of 700 MPa.

Typical applications

  • Automotive, machinery, and equipment assemblies where a built-in washer face is needed
  • Panel mounting, bracket fixing, and general workshop fabrication
  • Mechanical assemblies requiring increased bearing surface without a separate washer
  • General indoor and sheltered outdoor fixings in non-corrosive environments

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 styleHex head flange screw, non-serrated
StandardDIN 6921
MaterialA2 stainless steel (304)
Property classA2-70
Thread sizeM10
Thread pitch1.5 mm (coarse)
Length30 mm
Head typeHex flange
Drive typeExternal hex (spanner)
Surface finishPlain (no plating)
HS commodity code7318157590
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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