Machinery's Handbook Pocket Companion

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| Nominal Size | Body Diameter, | Head Diameter, | Head Height, | Spline Socket Size | Hex. Socket Size | Fillet Ext. | Key Engagement [a] | ||||
| Max | Min | Max | Min | Max | Min | Nom | Nom | Max | |||
| D | A | H | M | J | F | T | |||||
| 0 | 0.0600 | 0.0568 | 0.096 | 0.091 | 0.060 | 0.057 | 0.060 | 0.050 | 0.007 | 0.025 | |
| 1 | 0.0730 | 0.0695 | 0.118 | 0.112 | 0.073 | 0.070 | 0.072 | | 0.062 | 0.007 | 0.031 |
| 2 | 0.0860 | 0.0822 | 0.140 | 0.134 | 0.086 | 0.083 | 0.096 | | 0.078 | 0.008 | 0.038 |
| 3 | 0.0990 | 0.0949 | 0.161 | 0.154 | 0.099 | 0.095 | 0.096 | | 0.078 | 0.008 | 0.044 |
| 4 | 0.1120 | 0.1075 | 0.183 | 0.176 | 0.112 | 0.108 | 0.111 | | 0.094 | 0.009 | 0.051 |
| 5 | 0.1250 | 0.1202 | 0.205 | 0.198 | 0.125 | 0.121 | 0.111 | | 0.094 | 0.010 | 0.057 |
| 6 | 0.1380 | 0.1329 | 0.226 | 0.218 | 0.138 | 0.134 | 0.133 | | 0.109 | 0.010 | 0.064 |
| 8 | 0.1640 | 0.1585 | 0.270 | 0.262 | 0.164 | 0.159 | 0.168 | | 0.141 | 0.012 | 0.077 |
| 10 | 0.1900 | 0.1840 | 0.312 | 0.303 | 0.190 | 0.185 | 0.183 | | 0.156 | 0.014 | 0.090 |
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| 0.2500 | 0.2435 | 0.375 | 0.365 | 0.250 | 0.244 | 0.216 | | 0.188 | 0.014 | 0.120 |
| | 0.3125 | 0.3053 | 0.469 | 0.457 | 0.312 | 0.306 | 0.291 |
| 0.250 | 0.017 | 0.151 |
| ? | 0.3750 | 0.3678 | 0.562 | 0.550 | 0.375 | 0.368 | 0.372 | | 0.312 | 0.020 | 0.182 |
| | 0.4375 | 0.4294 | 0.656 | 0.642 | 0.438 | 0.430 | 0.454 | ? | 0.375 | 0.023 | 0.213 |
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| 0.5000 | 0.4919 | 0.750 | 0.735 | 0.500 | 0.492 | 0.454 | ? | 0.375 | 0.026 | 0.245 |
| ? | 0.6250 | 0.6163 | 0.938 | 0.921 | 0.625 | 0.616 | 0.595 |
| 0.500 | 0.032 | 0.307 |
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| 0.7500 | 0.7406 | 1.125 | 1.107 | 0.750 | 0.740 | 0.620 | ? | 0.625 | 0.039 | 0.370 |
| ? | 0.8750 | 0.8647 | 1.312 | 1.293 | 0.875 | 0.864 | 0.698 |
| 0.750 | 0.044 | 0.432 |
| 1 | 1.0000 | 0.9886 | 1.500 |