Simfix

M4 Flat Washer, Form A 25 Pack DIN 125-A A2 Stainless Steel

SKU 125A2043PK25-SIM
1000+ in stockReady to dispatch
£1.79
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M4 flat washer in A2 stainless steel to DIN 125-A. Spreads clamping load under bolt heads and nuts, protecting timber, aluminium, and plastic substrates from damage. Good corrosion resistance for indoor and general outdoor assemblies. Free next-day UK delivery on orders over £50.
£1.79

M4 flat washer in A2 stainless steel to DIN 125-A. Spreads clamping load under bolt heads and nuts, protecting timber, aluminium, and plastic substrates from damage. Good corrosion resistance for indoor and general outdoor assemblies. Free next-day UK delivery on orders over £50.
  • M4 flat washer Form A A2 stainless DIN 125-A
  • Flat Washer, Form A in a real-life workshop application. Helps distribute clamping pressure across the joint.
  • Simfix product label - 125A2043PK25-SIM
  • Simfix product label - 125A2043PK200-SIM
M4 flat washer Form A A2 stainless DIN 125-A
Flat Washer, Form A in a real-life workshop application. Helps distribute clamping pressure across the joint.
Simfix product label - 125A2043PK25-SIM
Simfix product label - 125A2043PK200-SIM
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M4 flat washer Form A A2 stainless DIN 125-A Flat Washer, Form A in a real-life workshop application. Helps distribute clamping pressure across the joint. Simfix product label - 125A2043PK25-SIM Simfix product label - 125A2043PK200-SIM
M4 flat washer Form A A2 stainless DIN 125-A Flat Washer, Form A in a real-life workshop application. Helps distribute clamping pressure across the joint. Simfix product label - 125A2043PK25-SIM Simfix product label - 125A2043PK200-SIM

This M4 Form A flat washer is manufactured to DIN 125-A in A2 stainless steel (304 grade). DIN 125-A (ISO 7089) specifies the normal series flat washer - the standard size paired with the majority of metric bolt and nut combinations. Placed under a bolt head or nut face, the washer spreads the clamping load over a larger bearing area, reducing stress on the parent surface and protecting softer materials such as timber, aluminium, and plastics from marking or crushing under the fastener head.

Typical applications

  • General-purpose load spreading under bolt heads and nuts
  • Timber, aluminium, and plastic substrates that need protection from bearing damage
  • Indoor and outdoor structural assemblies in non-coastal environments
  • Workshop, engineering, and maintenance fixings

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 styleForm A flat washer
StandardDIN 125-A
MaterialA2 stainless steel (304)
Property classA2-140HV
Thread sizeM4
Head typeN/A
Surface finishPlain (no plating)
HS commodity code7318220091
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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