M20 x 30.7mm Nord-Lock® Washer | A4 Stainless Steel

Product code: NL-M20-30.7-A4
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M20 x 30.7mm Nord-Lock® Washer | A4 Stainless Steel
M20 x 30.7mm Nord-Lock® Washer | A4 Stainless Steel
M20 x 30.7mm Nord-Lock® Washer | A4 Stainless Steel
M20 x 30.7mm Nord-Lock® Washer | A4 Stainless Steel
M20 x 30.7mm Nord-Lock® Washer | A4 Stainless Steel
M20 x 30.7mm Nord-Lock® Washer | A4 Stainless Steel
Quantity
Unit Price
(ex. VAT)
Unit Price
(inc. VAT)
1 - 99 £7.39 £8.87
100 - 499 £6.57 £7.88
500 - 999 £6.22 £7.47
1000 - 4999 £5.91 £7.09
5000 + £5.38 £6.45

£8.87 / each


Up to 781 units
Available
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Order now for dispatch within 5 days.
781 + units
Available for production
Average production time 14 + days.
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Product Specification
Size M20
Internal Diameter 21.4mm
Outside Diameter 30.7mm
Thickness 3.00mm
Material A4 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.

Larger Order?

Call our sales team on

01233 713581


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M20 x 30.7mm Nord-Lock® Washer | A4 Stainless Steel | Vital Parts - NL-M20-30.7-A4

Designed for reliable joint security, this M20 x 30.7mm Nord-Lock® Washer | A4 Stainless Steel is a practical preload-retaining washer for maintenance and production environments. The washer measures 21.4mm internally and 30.7mm externally, with a 3.00mm thickness for use with M20 threaded fixings. Its A4 stainless steel construction provides strong corrosion resistance for compatible stainless steel assemblies and general outdoor equipment. By resisting rotational movement, the washer supports safer, more predictable fastening performance.

What Are Nord-Lock® Washers?

A Nord-Lock® washer set uses tension rather than thread friction to secure a fastener. Each washer has cams on one side and radial serrations on the other. The cams face inward as a pair, while the serrations engage the mating surfaces, so attempted rotation is counteracted by the wedge-locking geometry.

Common Applications

  • Stainless Fabrication: Suitable for brackets, access panels and mechanical connections using compatible stainless fasteners.
  • Packaging Lines: Helps retain fasteners on conveyors, actuators and moving equipment in clean production areas.
  • Pumps and Valves: Useful on general stainless assemblies subject to pulsation, movement and routine maintenance.
  • Transport Equipment: Supports secure fastening on corrosion-resistant brackets and ancillary vehicle components.

Technical Specifications:

  • Size: M20
  • Internal Diameter: 21.4mm
  • Outside Diameter: 30.7mm
  • Thickness: 3.00mm
  • Material: A4 Stainless Steel

Related Fastening Products

Explore our wider ranges of washers, bolts and screws and nuts for complete fastening assemblies.

For help confirming the correct Nord-Lock® washer size or discussing larger order quantities, contact our technical team on 01233 713581.

Please call for any enquiries!
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Fri 8.30 am - 3.30 pm
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