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M20 Metric Washers in Bright Zinc Plated (BZP) Steel

This page lists all the various types of M20 Metric Washers in Bright Zinc Plated (BZP) Steel that we currently offer. Use this page to help select suitable washers for M20 metric bolts or screws.

The accompanying flat washer dimension table allows convenient comparison between the available M20 flat washer dimensions. The table only includes flat washers and, for completeness, may include washers only available in other materials.
M20 Flat Washer Dimensions ()
Type inner
diameter
outer
diameter
thickness
Form A
DIN 125
21.0 37.0 3.0
Form B
BS 4320
21.0 37.0 2.0
Form C
BS 4320
21 39 3.0
ISO 7089 21.0 37.0 3.0
ISO 7090 21.0 37.0 3.0
DIN 9021 22.0 60 4.0
For Cheesehead
DIN 433
21.0 34.0 3.0
Westfield Fasteners Ltd 2024
M20 Flat Washer Dimensions ()
Type inner
diameter
outer
diameter
thickness
Form A
DIN 125
21.0 37.0 3.0
Form B
BS 4320
21.0 37.0 2.0
Form C
BS 4320
21 39 3.0
ISO 7089 21.0 37.0 3.0
ISO 7090 21.0 37.0 3.0
DIN 9021 22.0 60 4.0
For Cheesehead
DIN 433
21.0 34.0 3.0
Westfield Fasteners Ltd 2024
Prices are subject to quantity discounts based on a sliding scale. Enter the desired quantity in the relevant box in the table above. This will automatically calculate a line price indicating the applicable rate for the quantities selected. All prices shown exclude VAT.
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