Complete the fixing

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

M6 Square Sect Spring Washer DIN 7980 A4 Stainless Steel

M6 hexagon nut marine grade 316 DIN 934 M6 Hexagon Full Nut DIN 934 A4-80 A4 Stainless Steel

M6 nyloc nut marine grade 316 DIN 985 M6 Nylon Insert Nut DIN 985 A4 Stainless Steel

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This M6 spring washer is manufactured to DIN 7980 in A4 stainless steel (316 grade). DIN 7980 specifies a split washer with a rectangular section and offset ends, for maintaining tension under vibration. The split ring is compressed flat under tightening and pushes back against the nut face, maintaining tension in the joint and helping resist loosening from vibration.

Typical applications

  • Joints subject to vibration and cyclic load
  • Machinery and equipment assembly
  • Vehicle and trailer fixings
  • General engineering where a nut must hold tension

Available in packs of 25 to 200, 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 styleSquare section spring washer
StandardDIN 7980
MaterialA4 stainless steel (316)
Property classA4
Thread sizeM6
Drive typeSquare
Surface finishPlain (no plating)
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 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.

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