M4 Penny Washer (Standard) 4.3mm ID x 25mm OD A4 Stainless Steel

Product code: WPE-M4-25-A4
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M4 Penny Washer (Standard) 4.3mm ID x 25mm OD A4 Stainless Steel
M4 Penny Washer (Standard) 4.3mm ID x 25mm OD A4 Stainless Steel
M4 Penny Washer (Standard) 4.3mm ID x 25mm OD A4 Stainless Steel
M4 Penny Washer (Standard) 4.3mm ID x 25mm OD A4 Stainless Steel
M4 Penny Washer (Standard) 4.3mm ID x 25mm OD A4 Stainless Steel
M4 Penny Washer (Standard) 4.3mm ID x 25mm OD A4 Stainless Steel
Quantity
Unit Price
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Unit Price
(inc. VAT)
1 - 99 £0.19 £0.23
100 - 499 £0.12 £0.15
500 - 999 £0.11 £0.13
1000 - 9999 £0.09 £0.11
10000 + £0.07 £0.09

£0.23 / each


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Product Specification
Size M4
Internal Diameter 4.3mm
Outside Diameter 25.0mm
Thickness 1.50mm
Material A4 Stainless Steel

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M4 Penny Washer - 4.3mm ID x 25mm OD | A4 Stainless Steel

Designed for outdoor structures and exposed equipment, this M4 Stainless Steel Penny Washer has a 4.3mm internal diameter and 25.0mm outside diameter. Manufactured from A4 Stainless Steel, its larger bearing area spreads clamping force over a wider surface which helps reduce pull-through and localised damage around the fastener.

What Are Stainless Steel Penny Washers?

Also known as repair washers, Stainless Steel Penny Washers sit beneath bolts, machine screws or nuts to enlarge the load-bearing surface of the joint. This can help prevent fastener heads or nuts from digging into the material or pulling through it.

Common Applications

  • Automotive Repairs: Provides additional bearing area around suitable fixings used in bodywork, brackets and vehicle components.
  • Machinery Maintenance: Provides a broad replacement washer for suitable bolts and machine screws on industrial equipment.
  • General Engineering: Pairs with compatible bolts, machine screws and nuts across workshop and production assemblies.
  • Marine Equipment: A4 variants suit compatible marine and coastal assemblies where increased corrosion resistance is required.

M4 x 25mm Stainless Steel Penny Washer Dimensions

  • Size: M4
  • Internal Diameter: 4.3mm
  • Outside Diameter: 25.0mm
  • Thickness: 1.50mm
  • Material: A4 Stainless Steel

Key Benefits

  • M4 size with 4.3mm internal diameter matches the uploaded SKU specification.
  • 1.50mm thickness provides the specified washer profile for this size.
  • Can help reduce the risk of fastener pull-through around oversized or weakened fixing holes.
  • A4 Stainless Steel provides increased corrosion resistance for marine, outdoor and more demanding environments.

View the full Stainless Steel Penny Washers range to compare metric sizes, outside diameters and A2 or A4 grades. For help choosing the correct washer for your fastener and application, contact the Vital Parts technical sales team on 01233 713581.

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