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Washers

Internal Tooth Washers

Dimensions of Internal Tooth Lock Washers

Washer Size A B C
Inside Diameter Outside Diameter Thickness
Max Min Max Min Max Min
No. 2 (0 .086) 0.095 0.089 0.200 0.175 0.016 0.010
No. 3 (0.099) 0.109 0.102 0.232 0.215 0.016 0.010
No. 4 (0.112) 0.123 0.115 0.270 0.245 0.018 0.012
No. 5 (0.125) 0.136 0.129 0.280 0.255 0.020 0.014
No. 6 (0.138) 0.150 0.141 0.295 0.275 0.022 0.016
No. 8 (0.164) 0.176 0.168 0.340 0.325 0.023 0.018
No. 10 (0.190) 0.204 0.195 0.381 0.365 0.024 0.018
No. 12 (0.216) 0.231 0.221 0.410 0.394 0.027 0.020
1/4 (0.250) 0.267 0.256 0.478 0.460 0.028 0.023
5/16 (0.3125) 0.332 0.320 0.610 0.594 0.034 0.028
3/8 (0.375) 0.398 0.384 0.692 0.670 0.040 0.032
7/16 (0.4375) 0.464 0.448 0.789 0.740 0.040 0.032
1/2 (0.500) 0.530 0.512 0.900 0.867 0.045 0.037
9/16 (0.5625) 0.596 0.576 0.985 0.957 0.045 0.037
5/8 (0.625) 0.663 0.640 1.071 1.045 0.050 0.042
11/16 (0.6875) 0.728 0.704 1.166 1.130 0.050 0.042
3/4 (0.750) 0.795 0.769 1.245 1.220 0.055 0.047
13/16 (0.8125) 0.861 0.832 1.315 1.290 0.055 0.047
7/8 (0.875) 0.927 0.894 1.410 1.364 0.060 0.052
1 (1 .000) 1.060 1.019 1.637 1.590 0.067 0.059
1-1/8 (1 .125) 1.192 1.144 1.830 1.799 0.067 0.059
1-1/4 (1.250) 1.325 1.275 1.975 1.921 0.067 0.059

Dimensions of Heavy Internal Tooth Lock Washers

Washer Size A B C
Inside Diameter Outside Diameter Thickness
Max Min Max Min Max Min
1/4 (0.250) 0.267 0.256 0.536 0.500 0.045 0.035
5/16 (0.3125) 0.332 0.320 0.607 0.590 0.050 0.040
3/8 (0.375) 0.398 0.384 0.748 0.700 0.050 0.042
7/16 (0.4375) 0.464 0.448 0.858 0.800 0.067 0.050
1/2 (0.500) 0.530 0.512 0.924 0.880 0.067 0.055
9/16 (0.5625) 0.596 0.576 1.034 0.990 0.067 0.055
5/8 (0.625) 0.663 0.640 1.135 1.100 0.067 0.059
3/4 (0.750) 0.795 0.768 1.265 1.240 0.084 0.070
7/8 (0.875) 0.927 0.894 1.447 1.400 0.084 0.075