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ASME B18.21.1 Internal External Tooth Lock Washers

ASME B18.21.1 Internal External Tooth Lock Washers

ASME B18.21.1 Internal External Tooth Lock Washers Dimensions (mm)

Nominal Size Inside Diameter, A Outside Diameter, B Thickness, C
Max. Min. Max. Min. Max. Min.
ASME B18.21.1 #4 (0.112) 3.124 2.921 12.065 11.684 0.533 0.406
12.954 12.573 0.533 0.431
15.494 14.732 0.533 0.431
ASME B18.21.1 #6 (0.138) 3.81 3.581 12.954 12.573 0.711 0.584
15.494 14.732 0.711 0.584
17.526 17.018 0.711 0.584
ASME B18.21.1 #8 (0.164) 4.47 4.267 15.494 14.732 0.863 0.711
17.526 17.018 0.863 0.711
19.304 18.796 0.863 0.711
ASME B18.21.1 #10 (0.190) 5.181 4.953 15.494 14.732 0.863 0.711
17.526 17.018 1.016 0.812
19.304 18.796 1.016 0.812
22.86 22.352 1.016 0.812
ASME B18.21.1 #12 (0.216) 5.867 5.613 17.526 17.018 1.016 0.812
19.304 18.415 1.016 0.812
22.86 22.352 1.016 0.812
25.019 24.511 1.143 0.939
ASME B18.21.1 1/4 (0.250) 6.781 6.502 19.304 18.415 1.016 0.812
22.86 22.352 1.016 0.812
25.019 24.511 1.143 0.939
27.178 26.543 1.143 0.939
ASME B18.21.1 5/16 (0.312) 8.432 8.128 22.86 21.971 1.016 0.812
25.019 24.511 1.143 0.939
27.178 26.543 1.27 1.066
29.337 28.702 1.27 1.066
ASME B18.21.1 3/8 (0.375) 10.109 9.753 25.019 24.511 1.143 0.939
27.178 26.543 1.27 1.066
32.004 30.988 1.27 1.066
ASME B18.21.1 7/16 (0.438) 11.785 11.379 27.178 26.543 1.27 1.066
29.337 28.702 1.27 1.066
33.401 32.766 1.397 1.193
32.004 30.988 1.397 1.193
ASME B18.21.1 1/2 (0.500) 13.462 13.004 33.401 32.766 1.397 1.193
35.814 35.052 1.524 1.32
41.148 40.386 1.701 1.498
ASME B18.21.1 9/16 (0.562) 15.138 14.63 33.401 32.766 1.397 1.193
35.814 35.052 1.524 1.32
41.148 40.386 1.701 1.498
46.482 45.643 1.701 1.498
ASME B18.21.1 5/8 (0.625) 16.84 16.256 35.814 35.052 1.524 1.32
41.148 40.386 1.701 1.498
50.165 49.149 1.701 1.498

ASME B18.21.1 Internal External Tooth Lock Washers Dimensions (Inch)

Nominal Size Inside Diameter, A Outside Diameter, B Thickness, C
Max. Min. Max. Min. Max. Min.
ASME B18.21.1 #4 (0.112) 0.123 0.115 0.475 0.46 0.021 0.016
0.51 0.495 0.021 0.017
0.61 0.58 0.021 0.017
ASME B18.21.1 #6 (0.138) 0.15 0.141 0.51 0.495 0.028 0.023
0.61 0.58 0.028 0.023
0.69 0.67 0.028 0.023
ASME B18.21.1 #8 (0.164) 0.176 0.168 0.61 0.58 0.034 0.028
0.69 0.67 0.034 0.028
0.76 0.74 0.034 0.028
ASME B18.21.1 #10 (0.190) 0.204 0.195 0.61 0.58 0.034 0.028
0.69 0.67 0.04 0.032
0.76 0.74 0.04 0.032
0.9 0.88 0.04 0.032
ASME B18.21.1 #12 (0.216) 0.231 0.221 0.69 0.67 0.04 0.032
0.76 0.725 0.04 0.032
0.9 0.88 0.04 0.032
0.985 0.965 0.045 0.037
ASME B18.21.1 1/4 (0.250) 0.267 0.256 0.76 0.725 0.04 0.032
0.9 0.88 0.04 0.032
0.985 0.965 0.045 0.037
1.07 1.045 0.045 0.037
ASME B18.21.1 5/16 (0.312) 0.332 0.32 0.9 0.865 0.04 0.032
0.985 0.965 0.045 0.037
1.07 1.045 0.05 0.042
1.155 1.13 0.05 0.042
ASME B18.21.1 3/8 (0.375) 0.398 0.384 0.985 0.965 0.045 0.037
1.07 1.045 0.05 0.042
1.26 1.22 0.05 0.042
ASME B18.21.1 7/16 (0.438) 0.464 0.448 1.07 1.045 0.05 0.042
1.155 1.13 0.05 0.042
1.315 1.29 0.055 0.047
1.26 1.22 0.055 0.047
ASME B18.21.1 1/2 (0.500) 0.53 0.512 1.315 1.29 0.055 0.047
1.41 1.38 0.06 0.052
1.62 1.59 0.067 0.059
ASME B18.21.1 9/16 (0.562) 0.596 0.576 1.315 1.29 0.055 0.047
1.41 1.38 0.06 0.052
1.62 1.59 0.067 0.059
1.83 1.797 0.067 0.059
ASME B18.21.1 5/8 (0.625) 0.663 0.64 1.41 1.38 0.06 0.052
1.62 1.59 0.067 0.059
1.975 1.935 0.067 0.059