INTERNAL-EXTERNAL TOOTH
LOCKWASHERS COMBINATION STYLE TYPE A ANSI/ASME B18.21.1 1972 (R1983) |
||
![]() |
All Dimensions in Inches | ![]() |
Bolt Diameter |
Inside Diameter | Outside Diameter | Thickness | ||||
Max. | Min. | Max. | Min. | Max. | Min. | ||
No. 4 | 0.112 | 0.123 | 0.115 | 0.510 | 0.495 | 0.021 | 0.017 |
No. 6 | 0.138 | 0.150 | 0.141 | 0.610 | 0.580 | 0.028 | 0.023 |
No. 8 | 0.164 | 0.176 | 0.168 | 0.690 | 0.670 | 0.034 | 0.028 |
No. 10 | 0.190 | 0.204 | 0.195 | 0.690 | 0.670 | 0.040 | 0.032 |
No. 12 | 0.216 | 0.231 | 0.221 | 0.760 | 0.725 | 0.040 | 0.032 |
1/4 | 0.250 | 0.267 | 0.256 | 0.900 | 0.880 | 0.040 | 0.032 |
5/16 | 0.312 | 0.332 | 0.320 | 0.985 | 0.965 | 0.045 | 0.037 |
3/8 | 0.375 | 0.398 | 0.384 | 1.070 | 1.045 | 0.050 | 0.042 |
7/16 | 0.438 | 0.464 | 0.448 | 1.155 | 1.130 | 0.050 | 0.042 |
1/2 | 0.500 | 0.530 | 0.512 | 1.315 | 1.290 | 0.055 | 0.047 |
9/16 | 0.562 | 0.596 | 0.576 | 1.430 | 1.380 | 0.060 | 0.052 |
5/8 | 0.625 | 0.663 | 0.640 | 1.620 | 1.590 | 0.067 | 0.059 |