
| Nominal Size (Basic Shoulder Diameter) |
Shoulder Diameter, D |
Head Diameter, A |
Head Height, H |
Max. Chamfer or Radius, |
Nominal Hexagon Socket Size, |
Min. Key Engagement, |
Max. Fillet Transition Diameter, |
Min. Head Fillet Radius |
|||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max | Min | Max | Min | Max | Min | C | J | T | M | R | |||
| ⅛ | (0.1250) | 0.1230 | 0.1210 | 0.250 | 0.235 | 0.125 | 0.115 | 0.008 | ⁵⁄₆₄ | 0.078 | 0.067 | 0.138 | 0.006 |
| ⁵⁄₃₂ | (0.1560) | 0.1540 | 0.1520 | 0.281 | 0.266 | 0.125 | 0.115 | 0.008 | ³⁄₃₂ | 0.094 | 0.067 | 0.172 | 0.007 |
| ³⁄₁₆ | (0.1875) | 0.1850 | 0.1830 | 0.312 | 0.296 | 0.156 | 0.146 | 0.012 | ³⁄₃₂ | 0.094 | 0.079 | 0.207 | 0.008 |
| ¼ | (0.2500) | 0.2480 | 0.2460 | 0.375 | 0.357 | 0.188 | 0.177 | 0.020 | ⅛ | 0.125 | 0.094 | 0.276 | 0.009 |
| ⁵⁄₁₆ | (0.3125) | 0.3105 | 0.3085 | 0.438 | 0.419 | 0.219 | 0.209 | 0.026 | ⁵⁄₃₂ | 0.156 | 0.117 | 0.345 | 0.012 |
| ⅜ | (0.3750) | 0.3730 | 0.3710 | 0.562 | 0.543 | 0.250 | 0.240 | 0.031 | ³⁄₁₆ | 0.188 | 0.141 | 0.413 | 0.015 |
| ½ | (0.5000) | 0.4980 | 0.4960 | 0.750 | 0.729 | 0.312 | 0.302 | 0.040 | ¼ | 0.250 | 0.188 | 0.550 | 0.020 |
| ⅝ | (0.7180) | 0.6230 | 0.620 | 0.875 | 0.853 | 0.375 | 0.365 | 0.050 | ⁵⁄₁₆ | 0.312 | 0.234 | 0.687 | 0.024 |
| ¾ | (0.7500) | 0.7480 | 0.7460 | 1.000 | 0.977 | 0.500 | 0.490 | 0.069 | ⅜ | 0.375 | 0.281 | 0826 | 0.030 |
| 1 | (1.0000) | 0.9980 | 0.9960 | 1.312 | 1.287 | 0.718 | 0.610 | 0.083 | ½ | 0.500 | 0.375 | 1.098 | 0.040 |
| 1¼ | (1.2500) | 1.2480 | 1.2460 | 1.750 | 1.723 | 0.750 | 0.735 | 0.102 | ⅝ | 0.718 | 0.469 | 1.368 | 0.050 |
| 1½ | (1.5000) | 1.4980 | 1.4960 | 2.125 | 2.095 | 1.000 | 0.980 | 0.138 | ⅞ | 0.875 | 0.656 | 1.638 | 0.060 |
| 1¾ | (1.7500) | 1.7480 | 1.7460 | 2.375 | 2.345 | 1.125 | 1.105 | 0.157 | 1 | 1.000 | 0.750 | 1.908 | 0.070 |
| 2 | (2.0000) | 1.9980 | 1.9960 | 2.750 | 2.720 | 1.250 | 1.230 | 0.176 | 1¼ | 1.250 | 0.937 | 2.178 | 0.080 |
| Nominal Size (Basic Shoulder Diameter) |
Min. Shoulder Neck Diameter, K |
Min. Shoulder Neck Width, F |
Nominal Thread Diameter, D1 |
Threads, in. |
Thread Neck Diameter, G |
Max. Thread Neck Width, l |
Thread Neck Fillet, N |
Basic Thread Length, E |
Max. Chamfer or Radius, P |
||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max | Min | Max | Min | ||||||||||
| ⅛ | (0.1250) | 0.108 | 0.040 | 4 | 0.1120 | 40 | 0.076 | 0.069 | 0.078 | 0.016 | 0.010 | 0.157 | 0.008 |
| ⁵⁄₃₂ | (0.1560) | 0.140 | 0.040 | 6 | 0.1380 | 32 | 0.100 | 0.093 | 0.063 | 0.018 | 0.012 | 0.187 | 0.008 |
| ³⁄₁₆ | (0.1875) | 0.154 | 0.040 | 8 | 0.1640 | 32 | 0.120 | 0.112 | 0.069 | 0.018 | 0.012 | 0.189 | 0.008 |
| ¼ | (0.2500) | 0.227 | 0.093 | 10 | 0.1900 | 24 | 0.142 | 0.133 | 0.083 | 0.023 | 0.017 | 0.375 | 0.010 |
| ⁵⁄₁₆ | (0.3125) | 0.289 | 0.093 | ¼ | 0.2500 | 20 | 0.193 | 0.182 | 0.100 | 0.028 | 0.022 | 0.438 | 0.010 |
| ⅜ | (0.3750) | 0.352 | 0.093 | ⁵⁄₁₆ | 0.3125 | 18 | 0.249 | 0.237 | 0.111 | 0.031 | 0.025 | 0.500 | 0.010 |
| ½ | (0.5000) | 0.477 | 0.093 | ⅜ | 0.3750 | 16 | 0.304 | 0.291 | 0.125 | 0.035 | 0.029 | 0.718 | 0.010 |
| ⅝ | (0.7180) | 0.602 | 0.093 | ½ | 0.5000 | 13 | 0.414 | 0.397 | 0.154 | 0.042 | 0.036 | 0.750 | 0.015 |
| ¾ | (0.7500) | 0.727 | 0.093 | ⅝ | 0.7180 | 11 | 0.521 | 0.502 | 0.182 | 0.051 | 0.045 | 0.875 | 0.015 |
| 1 | (1.0000) | 0.977 | 0.125 | ¾ | 0.7500 | 10 | 0.638 | 0.616 | 0.200 | 0.055 | 0.049 | 1.000 | 0.020 |
| 1¼ | (1.2500) | 1.227 | 0.125 | ⅞ | 0.8750 | 9 | 0.750 | 0.726 | 0.222 | 0.062 | 0.056 | 1.125 | 0.020 |
| 1½ | (1.5000) | 1.478 | 0.125 | 1⅛ | 1.1250 | 7 | 0.964 | 0.934 | 0.286 | 0.072 | 0.066 | 1.500 | 0.020 |
| 1¾ | (1.7500) | 1.728 | 0.125 | 1¼ | 1.2500 | 7 | 1.089 | 1.059 | 10.286 | 0.072 | 0.066 | 1.750 | 0.020 |
| 2 | (2.0000) | 1.978 | 0.125 | 1½ | 1.5000 | 6 | 1.307 | 1.277 | 0.333 | 0.102 | 0.096 | 2.000 | 0.020 |