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Imperial Washers 1/2 inch in Through (Thru) Hardened Bright Zinc Plated Steel

This page lists all the various types of Imperial Washers 1/2 inch in Through (Thru) Hardened Bright Zinc Plated Steel that we currently offer. Use this page to help select suitable washers for 1/2 inch UNC or UNF bolts or screws.

The accompanying flat washer dimension table allows convenient comparison between the available 1/2 flat washer dimensions. The table only includes flat washers and, for completeness, may include washers only available in other materials.
1/2 Flat Washer Dimensions (inch)
Type inner
diameter
outer
diameter
thickness
Table 3
BS 3410
0.515-0.520 0.995-1.000 0.056
SAE
ASME B18.21.1-1999
0.531 1.062 0.093
USS
ASME B18.21.1-1999
0.562 1.375 0.109
Commercial 0.573-0.558 1.260-1.245 0.057-0.067
US Military
Spec 15795 v1
0.531 1.062 (1 1/16") 0.095
US Military
Spec 15795 v2
0.562 1.375 (1 3/8") 0.109
Fender v1 1/2 1 1/4 0.05
Fender v2 1/2 1 1/2 0.05
Fender v3 1/2 1 3/4 0.05
Fender v4 1/2 2 0.05
Westfield Fasteners Ltd 2024
1/2 Flat Washer Dimensions (inch)
Type inner
diameter
outer
diameter
thickness
Table 3
BS 3410
0.515-0.520 0.995-1.000 0.056
SAE
ASME B18.21.1-1999
0.531 1.062 0.093
USS
ASME B18.21.1-1999
0.562 1.375 0.109
Commercial 0.573-0.558 1.260-1.245 0.057-0.067
US Military
Spec 15795 v1
0.531 1.062 (1 1/16") 0.095
US Military
Spec 15795 v2
0.562 1.375 (1 3/8") 0.109
Fender v1 1/2 1 1/4 0.05
Fender v2 1/2 1 1/2 0.05
Fender v3 1/2 1 3/4 0.05
Fender v4 1/2 2 0.05
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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