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USS Thick Washer Dimensions
Washer
Size		 Inside
Diameter		 Outside
Diameter		 Thickness
 Nom.
1/4 5/16 47/64 0.072
5/16 3/8 7/8 0.086
3/8 7/16 1 0.086
7/16 1/2 1 1/4 0.098
1/2 9/16 1 3/8 0.132
9/16 5/8 1 15/32 0.132
5/8 11/16 1 3/4 0.146
3/4 13/16 2 0.146
7/8 15/16 2 1/4 0.146
1 1 1/16 2 1/2 0.146
NOTES:
1. Unless noted otherwise, all dimensions are in
    inches.
2. Washer Size indicates the bolt/screw size with
    which the washer is intended to be used.
3. Inside and Outside Diameter refer to Basic
    Diameter.
4. Abbreviations: Nom. = Nominal; USS = U.S.
    Standard.
5. For reference only.