BS 3410 Table 2 Washers

BS 3410 Table 2 Washers

Dimensions for Large Diameter Bright Washers to BS 3410 Table 2

B.A. No.1 American
No. size		 Diameter of hole
A		 Outside diameter
B		 Thickness2
C
max. min. max. min.
Inch. S.W.G. Inch.
14 - 0.049 0.044 0.097 0.092 27 0.016
12 - 0.061 0.056 0.130 0.125 27 0.016
10 0 0.078 0.073 0.176 0.171 27 0.016
9 1 0.086 0.081 0.197 0.192 27 0.016
8 2 0.099 0.094 0.228 0.223 25 0.020
7 3 0.111 0.106 0.257 0.252 22 0.028
6 4 0.123 0.118 0.288 0.283 20 0.036
5 5 0.140 0.135 0.335 0.330 20 0.036
4 6 0.157 0.152 0.378 0.373 19 0.040
3 8 0.177 0.172 0.432 0.427 19 0.040
2 10 0.202 0.197 0.500 0.495 18 0.348
1 12 0.228 0.223 0.565 0.560 18 0.048
0 - 0.256 0.251 0.625 0.620 17 0.056

Notes:
1) The sizes shown in bold type are those which are designated "Preferred" in BS 57, " B.A. screws, bolts, nuts and plain washers".
2) Subject to the normal manufacturing tolerances on the sheet or strip as specified in the appropriate British Standards.