ASME B18.21.1 Lock Washers Interan Tooth Lock Washers
Bolt Size, In. 2 3 4 5 6 8 10 12 1/4 5/16 3/8 7/16 1/2 9/16 Outside Dia min., In. 0.175 0.215 0.245 0.255 0.275 0.325 0.365 0.394 0.46 0.594 0.67 0.74 0.867 0.957 Inside Dia.,min In. 0.089 0.102 0.115 0.129 0.141 0.168 0.195 0.221 0.256 0.32 0.384 0.448 0.512 0.576 Thickness min 0.01 0.01 0.012 0.014 0.016 0.018 0.018 0.02 0.023 0.028 0.032 0.032 0.037 0.037
Bolt Size, In. 5/8 11/16 3/4 13/16 7/8 1 1 1/8 1 1/4 Outside Dia min., In. 1.045 1.130 1.220 1.29 1.364 1.590 1.799 1.921 Inside Dia.,min In. 0.64 0.704 0.769 0.832 0.894 1.019 1.144 1.275 Thickness min 0.042 0.042 0.047 0.047 0.052 0.059 0.059 0.059