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BS 3410 Table 7 Washers

BS 3410 Table 7 Washers

Dimensions for Regular Sized Black Washers to BS 3410 Table 7

Nominal size
of Bolts
Diameter of hole A
Tolerance + 1/32 in
Outside diameter
B
Thickness C
Tolerance +/- 1 gauge
Inch S.W.G. Inch
1/4 9/32 5/8 16 0.064
5/16 11/32 3/4 14 0.080
3/8 13/32 7/8 14 0.080
7/16 15/32 1 12 0.104
1/2 9/16 1 1/8 12 0.104
9/16 5/8 1 1/4 10 0.128
5/8 11/16 1 3/8 10 0.128
3/4 13/16 1 5/8 9 0.144
7/8 15/16 1 7/8 8 0.160
1 1 1/16 2 1/8 7 0.176
1 1/8 1 3/16 2 3/8 7 0.176
1 1/4 1 3/8 2 5/8 6 0.192
1 3/8 1 1/2 2 7/8 6 0.192
1 1/2 1 5/8 3 1/8 6 0.192
1 5/8 1 3/4 3 3/8 5 0.212
1 3/4 1 7/8 3 5/8 5 0.212
1 7/8 2 3 7/8 5 0.212
2 2 1/8 4 1/8 5 0.212