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Imperial Washers 5/8 inch in Bright Zinc Plated (BZP) Steel

This page lists all the various types of Imperial Washers 5/8 inch in Bright Zinc Plated (BZP) Steel that we currently offer. Use this page to help select suitable washers for 5/8 inch UNC or UNF bolts or screws.

The accompanying flat washer dimension table allows convenient comparison between the available 5/8 flat washer dimensions. The table only includes flat washers and, for completeness, may include washers only available in other materials.
5/8 Flat Washer Dimensions (inch)
Type inner
diameter
outer
diameter
thickness
Table 3
BS 3410
0.651-0.656 1.240-1.250 0.072
SAE
ASME B18.21.1-1999
0.656 1.312 0.093
USS
ASME B18.21.1-1999
0.688 1.750 0.134
Commercial 0.703-0.681 1.520-1.495 0.068-0.088
US Military
Spec 15795 v1
0.656 1.312 (1 5/16") 0.095
US Military
Spec 15795 v2
0.688 1.750 (1 3/4") 0.134
Westfield Fasteners Ltd 2024
5/8 Flat Washer Dimensions (inch)
Type inner
diameter
outer
diameter
thickness
Table 3
BS 3410
0.651-0.656 1.240-1.250 0.072
SAE
ASME B18.21.1-1999
0.656 1.312 0.093
USS
ASME B18.21.1-1999
0.688 1.750 0.134
Commercial 0.703-0.681 1.520-1.495 0.068-0.088
US Military
Spec 15795 v1
0.656 1.312 (1 5/16") 0.095
US Military
Spec 15795 v2
0.688 1.750 (1 3/4") 0.134
Westfield Fasteners Ltd 2024
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