M5 Penny Washer (Small) 5.3mm ID x 20.0mm OD - A2 Stainless Steel

Product code: WPE-M5-20-A2
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M5 Penny Washer (Small) 5.3mm ID x 20.0mm OD - A2 Stainless Steel
M5 Penny Washer (Small) 5.3mm ID x 20.0mm OD - A2 Stainless Steel
M5 Penny Washer (Small) 5.3mm ID x 20.0mm OD - A2 Stainless Steel
M5 Penny Washer (Small) 5.3mm ID x 20.0mm OD - A2 Stainless Steel
M5 Penny Washer (Small) 5.3mm ID x 20.0mm OD - A2 Stainless Steel
M5 Penny Washer (Small) 5.3mm ID x 20.0mm OD - A2 Stainless Steel
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Product Specification
Size M5
Internal Diameter 5.3mm
Outside Diameter 20.0mm
Thickness 1.50mm
Material A2 Stainless Steel

Next Day or Standard Delivery available via DHL or Royal Mail.
Order by 4pm (UK) for same day dispatch, Monday to Thursday or 2pm Friday.

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01233 713581


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M5 Penny Washer - 5.3mm ID x 20mm OD | A2 Stainless Steel

Suitable for general engineering and maintenance assemblies, this M5 Penny Washer combines a 5.3mm bore with a broad 20.0mm outside diameter. The A2 Stainless Steel construction provides corrosion resistance while the enlarged washer footprint helps distribute load beneath bolts, machine screws and nuts.

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

  • Thin Sheet Metal: Supports fasteners across a larger area around holes in thin fabricated sheet and panel materials.
  • Electrical Equipment: Supports bolted fixings in panels, enclosures, equipment housings and mounting brackets.
  • Outdoor Structures: Supports exposed fixings on suitable fabricated frames, brackets and exterior equipment.
  • Timber and Woodwork: Spreads clamping pressure around bolts and screws to help protect softer timber fibres from localised crushing.

M5 x 20mm Stainless Steel Penny Washer Dimensions

  • Size: M5
  • Internal Diameter: 5.3mm
  • Outside Diameter: 20.0mm
  • Thickness: 1.50mm
  • Material: A2 Stainless Steel

Key Benefits

  • 20.0mm outside diameter provides a larger bearing area than a standard flat washer.
  • Wide washer footprint helps distribute clamping force across softer or thinner materials.
  • Suitable for use with compatible bolts, machine screws and nuts.
  • Flat washer format is simple to install within standard threaded fastener assemblies.

Compare alternative sizes and stainless steel grades in the Penny Washers, Repair Washers and Mudguard Washers range. For technical selection support, speak with our team on 01233 713581.

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