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| Measured in Inches | ||||||||
|---|---|---|---|---|---|---|---|---|
| Nominal Size | Major Diameter | Threads | Basic Pitch Diameter | Minor Diameter | Lead Angle at Basic Pitch | Height of Fundamental Triangle | Tensile Stress Area sq. inch | |
| Degrees | Min | |||||||
| #1 | 0.073 | 64 | 0.063 | 0.056 | 4 | 31 | 0.01353 | 0.003 |
| #2 | 0.086 | 56 | 0.074 | 0.067 | 4 | 22 | 0.01547 | 0.004 |
| #3 | 0.099 | 48 | 0.086 | 0.076 | 4 | 26 | 0.01804 | 0.005 |
| #4 | 0.112 | 40 | 0.096 | 0.085 | 4 | 45 | 0.02165 | 0.006 |
| #5 | 0.125 | 40 | 0.109 | 0.098 | 4 | 11 | 0.02165 | 0.008 |
| #6 | 0.138 | 32 | 0.118 | 0.104 | 4 | 50 | 0.02706 | 0.009 |
| #8 | 0.164 | 32 | 0.144 | 0.13 | 3 | 58 | 0.02706 | 0.014 |
| #10 | 0.19 | 24 | 0.163 | 0.145 | 4 | 39 | 0.03608 | 0.018 |
| #12 | 0.216 | 24 | 0.189 | 0.171 | 4 | 1 | 0.03608 | 0.024 |
| 1/4 | 0.25 | 20 | 0.218 | 0.196 | 4 | 11 | 0.0433 | 0.032 |
| 5/16 | 0.313 | 18 | 0.276 | 0.252 | 3 | 40 | 0.04811 | 0.052 |
| 3/8 | 0.375 | 16 | 0.334 | 0.307 | 3 | 24 | 0.05413 | 0.078 |
| 7/16 | 0.438 | 14 | 0.391 | 0.36 | 3 | 20 | 0.06186 | 0.106 |
| 1/2 | 0.5 | 13 | 0.45 | 0.417 | 3 | 7 | 0.06662 | 0.142 |
| 9/16 | 0.563 | 12 | 0.508 | 0.472 | 2 | 59 | 0.07217 | 0.182 |
| 5/8 | 0.625 | 11 | 0.566 | 0.527 | 2 | 56 | 0.07873 | 0.226 |
| 3/4 | 0.75 | 10 | 0.685 | 0.642 | 2 | 40 | 0.0866 | 0.334 |
| 7/8 | 0.875 | 9 | 0.803 | 0.755 | 2 | 31 | 0.09623 | 0.462 |
| 1 | 1 | 8 | 0.919 | 0.865 | 2 | 29 | 0.10825 | 0.606 |
| 1 1/8 | 1.125 | 7 | 1.032 | 0.941 | 2 | 31 | 0.12372 | 0.763 |
| 1 1/4 | 1.25 | 7 | 1.157 | 1.095 | 2 | 15 | 0.12372 | 0.969 |
| 1 3/8 | 1.375 | 6 | 1.267 | 1.195 | 2 | 24 | 0.14434 | 1.155 |
| 1 1/2 | 1.5 | 6 | 1.392 | 1.32 | 2 | 11 | 0.14434 | 1.405 |
| 1 3/4 | 1.75 | 5 | 1.62 | 1.534 | 2 | 15 | 0.17321 | 1.9 |
| 2 | 2 | 4 1/2 | 1.856 | 1.759 | 2 | 11 | 0.19245 | 2.5 |
| 2 1/4 | 2.25 | 4 1/2 | 2.106 | 2.009 | 1 | 55 | 0.19245 | 3.25 |
| 2 1/2 | 2.5 | 4 | 2.338 | 2.229 | 1 | 57 | 0.21651 | 4 |
| 2 3/4 | 2.75 | 4 | 2.588 | 2.479 | 1 | 46 | 0.21651 | 4.93 |
| 3 | 3 | 4 | 2.838 | 2.729 | 1 | 36 | 0.21651 | 5.97 |
| 3 1/4 | 3.25 | 4 | 3.088 | 2.979 | 1 | 29 | 0.21651 | 7.1 |
| 3 1/2 | 3.5 | 4 | 3.338 | 3.229 | 1 | 22 | 0.21651 | 8.33 |
| 3 3/4 | 3.75 | 4 | 3.588 | 3.479 | 1 | 16 | 0.21651 | 9.66 |
| 4 | 4 | 4 | 3.838 | 3.729 | 1 | 11 | 0.21651 | 11.08 |