| Size | Basic Major Diameter | Basic Pitch Diameter | Minor Diameter | Minor Dia. Area | Tensile Stress Area | ||
| Size Primary | Size Secondary | External Thread | Internal Thread | ||||
| inch | inch | inch | inch | inch | inch | sq. inch | sq. inch |
| 9/16* | 0.5625 | 0.5084 | 0.4633 | 0.4723 | 0.162 | 0.182 | |
| 5/8 | 0.6250 | 0.5709 | 0.5258 | 0.5348 | 0.210 | 0.232 | |
| 11/16 | 0.6875 | 0.6334 | 0.5883 | 0.5973 | 0.264 | 0.289 | |
| 3/4 | 0.7500 | 0.6959 | 0.6508 | 0.6598 | 0.323 | 0.351 | |
| 13/16 | 0.8125 | 0.7584 | 0.7133 | 0.7223 | 0.390 | 0.420 | |
| 7/8 | 0.8750 | 0.8209 | 0.7758 | 0.7848 | 0.462 | 0.495 | |
| 15/16 | 0.9375 | 0.8834 | 0.8383 | 0.8473 | 0.540 | 0.576 | |
| 1* | 1.0000 | 0.9459 | 0.9008 | 0.9098 | 0.625 | 0.663 | |
| 11/16 | 1.0625 | 1.0084 | 0.9633 | 0.9723 | 0.715 | 0.756 | |
| 11/8* | 1.1250 | 1.0709 | 1.0258 | 1.0348 | 0.812 | 0.856 | |
| 13/16 | 1.1875 | 1.1334 | 1.0883 | 1.0973 | 0.915 | 0.961 | |
| 11/4* | 1.2500 | 1.1959 | 1.1508 | 1.1598 | 1.024 | 1.073 | |
| 15/16 | 1.3125 | 1.2584 | 1.2133 | 1.2223 | 1.139 | 1.191 | |
| 13/8* | 1.3750 | 1.3209 | 1.2758 | 1.2848 | 1.260 | 1.315 | |
| 17/16 | 1.4375 | 1.3834 | 1.3383 | 1.3473 | 1.388 | 1.445 | |
| 11/2* | 1.5000 | 1.4459 | 1.4008 | 1.4098 | 1.52 | 1.58 | |
| 19/16 | 1.5625 | 1.5084 | 1.4633 | 1.4723 | 1.66 | 1.72 | |
| 15/8 | 1.6250 | 1.5709 | 1.5258 | 1.5348 | 1.81 | 1.87 | |
| 111/16 | 1.6875 | 1.6334 | 1.5883 | 1.5973 | 1.96 | 2.03 | |
| 13/4 | 1.7500 | 1.6959 | 1.6508 | 1.6598 | 2.12 | 2.19 | |
| 113/16 | 1.8125 | 1.7584 | 1.7133 | 1.7223 | 2.28 | 2.35 | |
| 17/8 | 1.8750 | 1.8209 | 1.7758 | 1.7848 | 2.45 | 2.53 | |
| 115/16 | 1.9375 | 1.8834 | 1.8383 | 1.8473 | 2.63 | 2.71 | |
| 2 | 2.0000 | 1.9459 | 1.9008 | 1.9098 | 2.81 | 2.89 | |
| 21/8 | 2.1250 | 2.0709 | 2.0258 | 2.0348 | 3.19 | 3.28 | |
| 21/4 | 2.2500 | 2.1959 | 2.1508 | 2.1598 | 3.60 | 3.69 | |
| 23/8 | 2.3750 | 2.3209 | 2.2758 | 2.2848 | 4.04 | 4.13 | |
| 21/2 | 2.5000 | 2.4459 | 2.4008 | 2.4098 | 4.49 | 4.60 | |
| 25/8 | 2.6250 | 2.5709 | 2.5258 | 2.5348 | 4.97 | 5.08 | |
| 23/4 | 2.7500 | 2.6959 | 2.6508 | 2.6598 | 5.48 | 5.59 | |
| 27/8 | 2.8750 | 2.8209 | 2.7758 | 2.7848 | 6.01 | 6.13 | |
| 3 | 3.0000 | 2.9459 | 2.9008 | 2.9098 | 6.57 | 6.69 | |
| 31/8 | 3.1250 | 3.0709 | 3.0258 | 3.0348 | 7.15 | 7.28 | |
| 31/4 | 3.2500 | 3.1959 | 3.1508 | 3.1598 | 7.75 | 7.89 | |
| 33/8 | 3.3750 | 3.3209 | 3.2758 | 3.2848 | 8.38 | 8.52 | |
| 31/2 | 3.5000 | 3.4459 | 3.4008 | 3.4098 | 9.03 | 9.18 | |
| 35/8 | 3.6250 | 3.5709 | 3.5258 | 3.5348 | 9.71 | 9.86 | |
| 33/4 | 3.7500 | 3.6959 | 3.6508 | 3.6598 | 10.42 | 10.57 | |
| 37/8 | 3.8750 | 3.8209 | 3.7758 | 3.7848 | 11.14 | 11.30 | |
| 4 | 4.0000 | 3.9459 | 3.9008 | 3.9098 | 11.90 | 12.06 | |
| 41/8 | 4.1250 | 4.0709 | 4.0258 | 4.0348 | 12.67 | 12.84 | |
| 41/4 | 4.2500 | 4.1959 | 4.1508 | 4.1598 | 13.47 | 13.65 | |
| 43/8 | 4.3750 | 4.3209 | 4.2758 | 4.2848 | 14.30 | 14.48 | |
| 41/2 | 4.5000 | 4.4459 | 4.4008 | 4.4098 | 15.1 | 15.3 | |
| 45/8 | 4.6250 | 4.5709 | 4.5258 | 4.5348 | 16.0 | 16.2 | |
| 43/4 | 4.7500 | 4.6959 | 4.6508 | 4.6598 | 16.9 | 17.1 | |
| 47/8 | 4.8750 | 4.8209 | 4.7758 | 4.7848 | 17.8 | 18.0 | |
| 5 | 5.0000 | 4.9459 | 4.9008 | 4.9098 | 18.8 | 19.0 | |
| 51/8 | 5.1250 | 5.0709 | 5.0258 | 5.0348 | 19.8 | 20.0 | |
| 51/4 | 5.2500 | 5.1959 | 5.1508 | 5.1598 | 20.8 | 21.0 | |
| 53/8 | 5.3750 | 5.3209 | 5.2758 | 5.2848 | 21.8 | 22.0 | |
| 51/2 | 5.5000 | 5.4459 | 5.4008 | 5.4098 | 22.8 | 23.1 | |
| 55/8 | 5.6250 | 5.5709 | 5.5258 | 5.5348 | 23.9 | 24.1 | |
| 53/4 | 5.7500 | 5.6959 | 5.6508 | 5.6598 | 25.0 | 25.2 | |
| 57/8 | 5.8750 | 5.8209 | 5.7758 | 5.7848 | 26.1 | 26.4 | |
| 6 | 6.0000 | 5.9459 | 5.9008 | 5.9098 | 27.3 | 27.5 | |
| inch | inch | inch | inch | inch | inch | sq. inch | sq. inch |
| Size Primary | Size Secondary | Basic Major Diameter | Basic Pitch Diameter | External Thread | Internal Thread | Minor Dia. Area | Tensile Stress Area |
| Size | Minor Diameter | ||||||
| * Standard Sizes of the UNC or UNF series |
