ASME B18.21.1 Lock Washers External Tooth Lock Washers
Bolt Size, In. 3 4 5 6 8 10 12 1/4 5/16 3/8 7/16 1/2 9/16 5/8 Outside Dia min., In. 0.22 0.245 0.27 0.305 0.365 0.395 0.46 0.494 0.588 0.67 0.74 0.88 0.96 1.045 Inside Dia.,min In. 0.102 0.115 0.129 0.141 0.168 0.195 0.221 0.256 0.32 0.384 0.448 0.513 0.576 0.641 Thickness min 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 0.042
Bolt Size, In. 11/16 3/4 13/16 7/8 1 Outside Dia min., In. 1.130 1.22 1.290 1.380 1.590 Inside Dia.,min In. 0.704 0.768 0.833 0.897 1.025 Thickness min 0.042 0.047 0.047 0.052 0.059