M20 Square Profile Spring Washers (DIN 7980) - Marine Stainless Steel (A4)


Key Features

  • M20 Metric Thread Size (20mm)
  • A4 Stainless Steel, also known as marine grade or 316 Stainless Steel. Details.
  • For Use With Thread Size: M20 (20mm)
  • External Diameter (OD): 30.6mm
  • Uncompressed Height (T): 9mm
View Full Technical Specification.

Available In Other Materials & Finishes

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M20 Square Profile Spring Washers (DIN 7980) - Marine Stainless Steel (A4) Technical Specification

M20 Square Profile Spring Washers (DIN 7980) - Marine Stainless Steel (A4) Drawing
External Diameter (OD)30.6mm
For Use With Thread SizeM20 (20mm)
Internal Diameter (ID)20.2mm
Manufacturing StandardDIN 7980
MaterialMarine Stainless Steel (A4)
Material SpecificationMarine Stainless Steel (A4)
Metric or Imperial?Metric
Thickness (S)4.5mm
Uncompressed Height (T)9mm

Product Certifications

Certificate of Conformity Included
Certificate of Conformity Included
RoHS Certified
RoHS Certified
REACH Certified
REACH Certified
Quality Approved

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M20 Square Profile Spring Washers (DIN 7980) - Marine Stainless Steel (A4) Description

The M20 Square Profile Spring Washers (DIN 7980) - Marine Stainless Steel (A4) has the following features:

  • DIN 7980 Manufacturing Standard
  • 20.2mm Internal Diameter (ID)
  • 30.6mm External Diameter (OD)
  • Marine Stainless Steel (A4) Material
  • Marine Stainless Steel (A4) Material Specification
  • Natural Finish
  • Metric Metric or Imperial?
  • 4.5mm Thickness (S)
  • 9mm Uncompressed Height (T)
  • M20 (20mm) For Use With Thread Size

Discover more about the Square Profile Spring Washers range

Square Profile Spring Washers are designed to provide a ductile spacer with light vibration-resistant properties. Similar to AccuScrews’ standard Split Spring Washer, this component has a split in the washer for increased flexibility, but features a square profile. A rectangular-profile variant of this component is also available, and can be found in AccuScrews' Rectangular Spring Washers range.


All of Accu's Square Profile Spring Washers are manufactured from A2 and A4 Stainless Steel, with the option of Chemical Blackening available on request.

Metric Square Profile Spring Washers

Square Profile Spring Washers comply with DIN Standard 7980, and are available in sizes of M2 to M30, and uncompressed heights of 2.00mm to 12.00mm.

Shipping Information

Shipping Destinations:Worldwide.
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Weight Band (100 items):Between 1kg and 5kg. Add to cart to calculate exact weights.

Component History

Product First Available:Sunday, June 28, 2015
Stock Last Updated:01:02 am
Monday, August 2, 2021
Specification Last Updated:Sunday, August 1, 2021

APC / Barcodes

APC (Accu Product Code):HSSW-M20-A4
EAN13 (International Article No.):5054328319370
ASIN (Amazon Stock Identification No.):ASIN not defined.