
| Nominal Size (Basic Screw Diameter) |
Body Diameter, D |
Head Diameter, A |
Reference Head Height, H |
Protrusion Gage Diameter, G |
Protrusion p |
Nominal Hexagon Socket Size, J |
Minimum Key Engagement, T |
Maximum Fillet Transition Diameter, F |
||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max | Min | Max | Min | Max. | Min | Max. | Min | |||||||
| 0 | (0.0600) | 0.0600 | 0.0568 | 0.138 | 0.117 | 0.044 | 0.078 | 0.077 | 0.044 | 0.026 | ... | 0.035 | 0.025 | 0.072 |
| 1 | (0.0730) | 0.0730 | 0.0695 | 0.168 | 0.143 | 0.054 | 0.101 | 0.100 | 0.048 | 0.028 | ... | 0.050 | 0.031 | 0.089 |
| 2 | (0.0860) | 0.0860 | 0.0822 | 0.197 | 0.168 | 0.064 | 0.124 | 0.123 | 0.051 | 0.031 | ... | 0.050 | 0.038 | 0.106 |
| 3 | (0.0990) | 0.0990 | 0.0949 | 0.226 | 0.193 | 0.073 | 0.148 | 0.147 | 0.054 | 0.033 | ¹⁄₁₆ | 0.062 | 0.044 | 0.119 |
| 4 | (0.1120) | 0.1120 | 0.1075 | 0.255 | 0.218 | 0.083 | 0.172 | 0.171 | 0.057 | 0.036 | ¹⁄₁₆ | 0.062 | 0.055 | 0.136 |
| 5 | (0.1250) | 0.1250 | 0.1202 | 0.281 | 0.240 | 0.090 | 0.196 | 0.195 | 0.059 | 0.037 | ⁵⁄₆₄ | 0.078 | 0.061 | 0.153 |
| 6 | (0.1380) | 0.1380 | 0.1329 | 0.307 | 0.263 | 0.097 | 0.220 | 0.219 | 0.060 | 0.037 | ⁵⁄₆₄ | 0.078 | 0.066 | 0.168 |
| 8 | (0.1640) | 0.1640 | 0.1585 | 0.359 | 0.311 | 0.112 | 0.267 | 0.266 | 0.063 | 0.039 | ³⁄₃₂ | 0.094 | 0.076 | 0.194 |
| 10 | (0.1900) | 0.1900 | 0.1840 | 0.411 | 0.359 | 0.127 | 0.313 | 0.312 | 0.066 | 0.041 | ⅛ | 0.125 | 0.087 | 0.220 |
| 12 | (0.2158) | 0.2158 | 0.2102 | 0.450 | 0.410 | 0.135 | 0.360 | 0.359 | 0.069 | 0.042 | ⅛ | 0.125 | 0.094 | 0.246 |
| ¼ | (0.2500) | 0.2500 | 0.2435 | 0.531 | 0.480 | 0.161 | 0.424 | 0.423 | 0.072 | 0.043 | ⁵⁄₃₂ | 0.156 | 0.111 | 0.280 |
| ⁵⁄₁₆ | (0.3125) | 0.3125 | 0.3053 | 0.656 | 0.600 | 0.198 | 0.539 | 0.538 | 0.078 | 0.047 | ³⁄₁₆ | 0.188 | 0.135 | 0.343 |
| ⅜ | (0.3750) | 0.3750 | 0.3678 | 0.781 | 0.720 | 0.234 | 0.653 | 0.652 | 0.088 | 0.050 | ⁷⁄₃₂ | 0.219 | 0.159 | 0.405 |
| ⁷⁄₁₆ | (0.4375) | 0.4375 | 0.4294 | 0.844 | 0.781 | 0.234 | 0.690 | 0.689 | 0.104 | 0.063 | ¼ | 0.250 | 0.159 | 0.468 |
| ½ | (0.5000) | 0.5000 | 0.4919 | 0.938 | 0.872 | 0.251 | 0.739 | 0.738 | 0.131 | 0.087 | ⁵⁄₁₆ | 0.312 | 0.172 | 0.530 |
| ⅝ | (0.7180) | 0.7180 | 0.6163 | 1.188 | 1.112 | 0.324 | 0.962 | 0.961 | 0.146 | 0.096 | ⅜ | 0.375 | 0.220 | 0.655 |
| ¾ | (0.7500) | 0.7500 | 0.7406 | 1.438 | 1.355 | 0.396 | 1.186 | 1.185 | 0.170 | 0.105 | ½ | 0.500 | 0.220 | 0.780 |
| ⅞ | (0.8750) | 0.8750 | 0.8647 | 1.688 | 1.604 | 0.468 | 1.411 | 1.410 | 0.165 | 0.118 | ⁹⁄₁₆ | 0.562 | 0.248 | 0.905 |
| 1 | (1.0000) | 1.0000 | 0.9886 | 1.938 | 1.841 | 0.540 | 1.635 | 1.634 | 0.181 | 0.130 | ⅝ | 0.718 | 0.297 | 1.030 |
| 1⅛ | (1.1250) | 1.1250 | 1.1086 | 2.188 | 2.079 | 0.611 | 1.859 | 1.858 | 0.196 | 0.140 | ¾ | 0.750 | 0.325 | 1.187 |
| 1¼ | (1.2500) | 1.2500 | 1.2336 | 2.438 | 2.316 | 0.683 | 2.083 | 2.082 | 0.212 | 0.150 | ⅞ | 0.875 | 0.358 | 1.312 |
| 1⅜ | (1.3750) | 1.3750 | 1.3568 | 2.688 | 2.553 | 0.755 | 2.306 | 2.305 | 0.228 | 0.162 | ⅞ | 0.875 | 0.402 | 1.437 |
| 1½ | (1.5000) | 1.5000 | 1.4818 | 2.938 | 2.791 | 0.827 | 2.530 | 2.529 | 0.243 | 0.173 | 1 | 1.000 | 0.435 | 1.562 |