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Imperial Washers 5/16 inch in Bright Zinc Plated (BZP) Steel

This page lists all the various types of Imperial Washers 5/16 inch in Bright Zinc Plated (BZP) Steel that we currently offer. Use this page to help select suitable washers for 5/16 inch UNC or UNF bolts or screws.

The accompanying flat washer dimension table allows convenient comparison between the available 5/16 flat washer dimensions. The table only includes flat washers and, for completeness, may include washers only available in other materials.
5/16 Flat Washer Dimensions (inch)
Type inner
diameter		 outer
diameter		 thickness
Table 3
BS 3410		 0.328-0.333 0.620-0.625 0.040
SAE
ASME B18.21.1-1999		 0.343 0.687 0.062
USS
ASME B18.21.1-1999		 0.375 0.875 0.083
Commercial 0.355-0.340 0.760-0.745 0.045-0.055
US Military
Spec 15795 v1		 0.344 0.688 (11/16") 0.065
US Military
Spec 15795 v2		 0.375 0.875 (7/8") 0.083
Fender v1 5/16 1 1/4 0.05
Fender v2 5/16 1 1/2 0.05
Westfield Fasteners Ltd 2025
5/16 Flat Washer Dimensions (inch)
Type inner
diameter		 outer
diameter		 thickness
Table 3
BS 3410		 0.328-0.333 0.620-0.625 0.040
SAE
ASME B18.21.1-1999		 0.343 0.687 0.062
USS
ASME B18.21.1-1999		 0.375 0.875 0.083
Commercial 0.355-0.340 0.760-0.745 0.045-0.055
US Military
Spec 15795 v1		 0.344 0.688 (11/16") 0.065
US Military
Spec 15795 v2		 0.375 0.875 (7/8") 0.083
Fender v1 5/16 1 1/4 0.05
Fender v2 5/16 1 1/2 0.05
Westfield Fasteners Ltd 2025
Image Description Sale Qtys Qty Price Breakdown Despatch Estimate
Fender Washer 5/16 x 1-1/4 od in Zinc Plated Steel
WF29278		 £0.00
Fender Washer 5/16 x 1-1/2 od in Zinc Plated Steel
WF29279		 £0.00
5/16 SAE Flat Washer inch in Zinc Plated Steel
WF39012		 £0.00
5/16 Shakeproof Lock Washer External Tooth inch in Zinc Plated Steel
WF29206		 £0.00
5/16 Spring Washer inch in Zinc Plated Steel
WF28593		 £0.00
5/16 inch Table 3 Heavy Pattern Washer in Zinc Plated Steel
WF90931		 £0.00
5/16 inch Table 3 Light Pattern Flat Washer in Zinc Plated Steel
WF90955		 £0.00
5/16 inch Table 4 Heavy Pattern Washer in Zinc Plated Steel
WF90943		 £0.00
5/16 USS Flat Washer inch in Zinc Plated Steel
WF32457		 £0.00
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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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