| Measured in Inches | ||||||
|---|---|---|---|---|---|---|
| Size Primary Inch |
Basic Major Diameter Inch |
Basic Pitch Diameter Inch |
Minor Diameter, inch | Minor Dia. Area sq. inch |
Tensile Stress Area sq. inch |
|
| External Thread | Internal Thread | |||||
| 1 | 1 | 0.9188 | 0.8512 | 0.8647 | 0.551 | 0.606 |
| 1 - 1/6 | 1.0625 | 0.9813 | 0.9137 | 0.9272 | 0.636 | 0.695 |
| 1 - 1/8 | 1.125 | 1.0438 | 0.9792 | 0.9897 | 0.728 | 0.79 |
| 1 - 3/16 | 1.1875 | 1.1063 | 1.0387 | 1.0522 | 0.825 | 0.892 |
| 1 - 1/4 | 1.25 | 1.1688 | 1.1012 | 1.1147 | 0.929 | 1 |
| 1 - 5/16 | 1.3125 | 1.2313 | 1.1637 | 1.1772 | 1.039 | 1.114 |
| 1 - 3/8 | 1.375 | 1.2938 | 1.2262 | 1.2397 | 1.155 | 1.233 |
| 1 - 7/16 | 1.4375 | 1.3563 | 1.2887 | 1.3022 | 1.277 | 1.36 |
| 1 - 1/2 | 1.5 | 1.4188 | 1.3512 | 1.3647 | 1.405 | 1.492 |
| 1 - 9/16 | 1.5625 | 1.4813 | 1.4137 | 1.4272 | 1.54 | 1.63 |
| 1 - 5/8 | 1.625 | 1.5438 | 1.4806 | 1.4897 | 1.68 | 1.78 |
| 1 - 11/16 | 1.6875 | 1.6063 | 1.5387 | 1.5522 | 1.83 | 1.93 |
| 1 - 3/4 | 1.75 | 1.6688 | 1.6012 | 1.6147 | 1.98 | 2.08 |
| 1 - 13/16 | 1.8125 | 1.7313 | 1.6637 | 1.6772 | 2.14 | 2.25 |
| 1 - 7/8 | 1.875 | 1.7938 | 1.7262 | 1.7397 | 2.3 | 2.41 |
| 1 - 15/16 | 1.9375 | 1.8563 | 1.7887 | 1.8022 | 2.47 | 2.59 |
| 2 | 2 | 1.9188 | 1.8512 | 1.8647 | 2.65 | 2.77 |
| 2 - 1/8 | 2.125 | 2.0438 | 1.9762 | 1.9897 | 3.03 | 3.15 |
| 2 - 1/4 | 2.25 | 2.1688 | 2.1012 | 2.1147 | 3.42 | 3.56 |
| 2 - 3/8 | 2.375 | 2.2938 | 2.2262 | 2.2397 | 3.85 | 3.99 |
| 2 - 1/2 | 2.5 | 2.4188 | 2.3512 | 2.3647 | 4.29 | 4.44 |
| 2 - 5/8 | 2.625 | 2.5438 | 2.4762 | 2.4897 | 4.76 | 4.92 |
| 2 - 3/4 | 2.75 | 2.6688 | 2.6012 | 2.6147 | 5.26 | 5.43 |
| 2 - 7/8 | 2.875 | 2.7938 | 2.7262 | 2.7397 | 5.78 | 5.95 |
| 3 | 3 | 2.9188 | 2.8512 | 2.8647 | 6.32 | 6.51 |
| 3 - 1/8 | 3.125 | 3.0438 | 2.9762 | 2.9897 | 6.89 | 7.08 |
| 3 - 1/4 | 3.25 | 3.1688 | 3.1012 | 3.1147 | 7.49 | 7.69 |
| 3 - 3/8 | 3.375 | 3.2938 | 3.2262 | 3.2397 | 8.11 | 8.31 |
| 3 - 1/2 | 3.5 | 3.4188 | 3.3512 | 3.3647 | 8.75 | 8.96 |
| 3 - 5/8 | 3.625 | 3.5438 | 3.4762 | 3.4897 | 9.42 | 9.64 |
| 3 - 3/4 | 3.75 | 3.6688 | 3.6012 | 3.6147 | 10.11 | 10.34 |
| 3 - 7/8 | 3.875 | 3.7938 | 3.7262 | 3.7397 | 10.83 | 11.06 |
| 4 | 4 | 3.9188 | 3.8516 | 3.8647 | 11.57 | 11.81 |
| 4 - 1/8 | 4.125 | 4.0438 | 3.9762 | 3.9897 | 12.34 | 12.59 |
| 4 - 1/4 | 4.25 | 4.1688 | 4.1012 | 4.1147 | 13.12 | 13.38 |
| 4 - 3/8 | 4.375 | 4.2938 | 4.2262 | 4.2397 | 13.94 | 14.21 |
| 4 - 1/2 | 4.5 | 4.4188 | 4.3512 | 4.3647 | 14.78 | 15.1 |
| 4 - 5/8 | 4.625 | 4.5438 | 4.4762 | 4.4897 | 15.6 | 15.9 |
| 4 - 3/4 | 4.75 | 4.6688 | 4.6012 | 4.6147 | 16.5 | 16.8 |
| 4 - 7/8 | 4.875 | 4.7938 | 4.7262 | 4.7397 | 17.4 | 17.7 |
| 5 | 5 | 4.9188 | 4.8512 | 4.8647 | 18.4 | 18.7 |
| 5 - 1/8 | 5.125 | 5.0438 | 4.9762 | 4.9897 | 19.3 | 19.7 |
| 5 - 1/4 | 5.25 | 5.1688 | 5.1012 | 5.1147 | 20.3 | 20.7 |
| 5 - 3/8 | 5.375 | 5.2938 | 5.2262 | 5.2397 | 21.3 | 21.7 |
| 5 - 1/2 | 5.5 | 5.4188 | 5.3512 | 5.3647 | 22.4 | 22.7 |
| 5 - 5/8 | 5.625 | 5.5438 | 5.4762 | 5.4897 | 23.4 | 23.8 |
| 5 - 3/4 | 5.75 | 5.6688 | 5.6012 | 5.6147 | 24.5 | 24.9 |
| 5 - 7/8 | 5.875 | 5.7938 | 5.7262 | 5.7397 | 25.6 | 26 |
| 6 | 6 | 5.9188 | 5.8512 | 5.8647 | 26.8 | 27.1 |
8UN 8UNR Thread Chart
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