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| Nominal Size or Basic Diameter | Body Diameter, D | Head Diameter, A | Head Height, H | Hexagon Socket Size, J Nom | Key Engagement, T Min | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Max | Min | Max | Min | Max | Min | |||||
| 0 | 0.0600 | 0.0600 | 0.0568 | 0.096 | 0.091 | 0.060 | 0.057 | … | 0.050 | 0.025 |
| 1 | 0.0730 | 0.0730 | 0.0695 | 0.118 | 0.112 | 0.073 | 0.070 | 1/16 | 0.062 | 0.031 |
| 2 | 0.0860 | 0.0860 | 0.0822 | 0.140 | 0.134 | 0.086 | 0.083 | 5/64 | 0.078 | 0.038 |
| 3 | 0.0990 | 0.0990 | 0.0949 | 0.161 | 0.154 | 0.099 | 0.095 | 5/64 | 0.078 | 0.044 |
| 4 | 0.1120 | 0.1120 | 0.1075 | 0.183 | 0.176 | 0.112 | 0.108 | 3/32 | 0.094 | 0.051 |
| 5 | 0.1250 | 0.1250 | 0.1202 | 0.205 | 0.198 | 0.125 | 0.121 | 3/32 | 0.094 | 0.057 |
| 6 | 0.1380 | 0.1380 | 0.1329 | 0.226 | 0.218 | 0.138 | 0.134 | 7/64 | 0.109 | 0.064 |
| 8 | 0.1640 | 0.1640 | 0.1585 | 0.270 | 0.262 | 0.164 | 0.159 | 9/64 | 0.141 | 0.077 |
| 10 | 0.1900 | 0.1900 | 0.1840 | 0.312 | 0.303 | 0.190 | 0.185 | 5/32 | 0.156 | 0.090 |
| 1/4 | 0.2500 | 0.2500 | 0.2435 | 0.375 | 0.365 | 0.250 | 0.244 | 3/16 | 0.188 | 0.120 |
| 5/16 | 0.3125 | 0.3125 | 0.3053 | 0.469 | 0.457 | 0.312 | 0.306 | 1/4 | 0.250 | 0.151 |
| 3/8 | 0.3750 | 0.3750 | 0.3678 | 0.562 | 0.550 | 0.375 | 0.368 | 5/16 | 0.312 | 0.182 |
| 7/16 | 0.4375 | 0.4375 | 0.4294 | 0.656 | 0.642 | 0.438 | 0.430 | 3/8 | 0.375 | 0.213 |
| 1/2 | 0.5000 | 0.5000 | 0.4919 | 0.750 | 0.735 | 0.500 | 0.492 | 3/8 | 0.375 | 0.245 |
| 5/8 | 0.6250 | 0.6250 | 0.6163 | 0.938 | 0.921 | 0.625 | 0.616 | 1/2 | 0.500 | 0.307 |
| 3/4 | 0.7500 | 0.7500 | 0.7406 | 1.125 | 1.107 | 0.750 | 0.740 | 5/8 | 0.625 | 0.370 |
| 7/8 | 0.8750 | 0.8750 | 0.8647 | 1.312 | 1.293 | 0.875 | 0.864 | 3/4 | 0.750 | 0.432 |
| 1 | 1.0000 | 1.0000 | 0.9886 | 1.500 | 1.479 | 1.000 | 0.988 | 3/4 | 0.750 | 0.495 |
| 1 1/8 | 1.1250 | 1.1250 | 1.1086 | 1.688 | 1.665 | 1.125 | 1.111 | 7/8 | 0.875 | 0.557 |
| 1 1/4 | 1.2500 | 1.2500 | 1.2336 | 1.875 | 1.852 | 1.250 | 1.236 | 7/8 | 0.875 | 0.620 |
| 1 3/8 | 1.3750 | 1.3750 | 1.3568 | 2.062 | 2.038 | 1.375 | 1.360 | 1 | 1.000 | 0.682 |
| 1 1/2 | 1.5000 | 1.5000 | 1.4818 | 2.250 | 2.224 | 1.500 | 1.485 | 1 | 1.000 | 0.745 |
| 1 3/4 | 1.7500 | 1.7500 | 1.7295 | 2.625 | 2.597 | 1.750 | 1.734 | 1 1/4 | 1.250 | 0.870 |
| 2 | 2.0000 | 2.0000 | 1.9780 | 3.000 | 2.970 | 2.000 | 1.983 | 1 1/2 | 1.500 | 0.995 |
| 2 1/4 | 2.2500 | 2.2500 | 2.2280 | 3.375 | 3.344 | 2.250 | 2.232 | 1 3/4 | 1.750 | 1.120 |
| 2 1/2 | 2.5000 | 2.5000 | 2.4762 | 3.750 | 3.717 | 2.500 | 2.481 | 1 3/4 | 1.750 | 1.245 |
| 2 3/4 | 2.7500 | 2.7500 | 2.7262 | 4.125 | 4.090 | 2.750 | 2.730 | 2 | 2.000 | 1.370 |
| 3 | 3.0000 | 3.0000 | 2.9762 | 4.500 | 4.464 | 3.000 | 2.979 | 2 1/4 | 2.250 | 1.495 |
| 3 1/4 | 3.2500 | 3.2500 | 3.2262 | 4.875 | 4.837 | 3.250 | 3.228 | 2 1/4 | 2.250 | 1.620 |
| 3 1/2 | 3.5000 | 3.5000 | 3.4762 | 5.250 | 5.211 | 3.500 | 3.478 | 2 3/4 | 2.750 | 1.745 |
| 3 3/4 | 3.7500 | 3.7500 | 3.7262 | 5.625 | 5.584 | 3.750 | 2.727 | 2 3/4 | 2.750 | 1.870 |
| 4 | 4.0000 | 4.0000 | 3.9762 | 6.000 | 5.958 | 4.000 | 3.976 | 3 | 3.000 | 1.995 |