| Nominal Diameter, D | L 1 | L 2 | D 2 | □ |
| UNC No. 1 X 64 | 41 | 8 | 2.5 | 2 |
| UNC NO. 2 X 56 | 44.5 | 9.5 | 2.8 | 2.24 |
| UNC No. 3 X 48 | 44.5 | 9.5 | 2.8 | 2.24 |
| UNC No. 4 X 40 | 48 | 11 | 3.15 | 2.5 |
| UNC No. 5 X 40 | 48 | 11 | 3.15 | 2.5 |
| UNC No. 6 X 32 | 50 | 13 | 3.55 | 2.8 |
| UNC No. 8 X 32 | 53 | 13 | 4.5 | 3.55 |
| UNC No. 10 X 24 | 58 | 16 | 5 | 4 |
| UNC No. 12 X 24 | 62 | 17 | 5.6 | 4.5 |
| UNC 1/4 X 20 | 66 | 19 | 6.3 | 5 |
| UNC 5/16 X 18 | 72 | 22 | 8 | 6.3 |
| UNC 3/8 X 16 | 80 | 24 | 10 | 8 |
| UNC 7/16 X 14 | 85 | 25 | 8 | 6.3 |
| UNC 1/2 X 13 | 89 | 29 | 9 | 7.1 |
| UNC 9/16 X 12 | 95 | 30 | 11.2 | 9 |
| UNC 5/8 X 11 | 102 | 32 | 12.5 | 10 |
| UNC 3/4 X 10 | 112 | 37 | 14 | 11.2 |
| UNC 7/8 X 9 | 118 | 38 | 16 | 12.5 |
| UNC 1" X 8 | 130 | 45 | 18 | 14 |
| UNC 1.1/8 X 7 | 138 | 48 | 20 | 16 |
| UNC 1.1/4 X 7 | 151 | 51 | 22.4 | 18 |
| UNC 1.13/8 X 6 | 162 | 57 | 25 | 20 |
| UNC 1.1/2 X 6 | 170 | 60 | 28 | 22.4 |
| UNC 1.3/4 X 5 | 187 | 67 | 31.5 | 25 |
| UNC 1.7/8 X 4.5 | ||||
| UNC 2" X 4.1/2 | 200 | 70 | 35.5 | 28 |
| DIN 376 | ||||
| UNC 1/4 X 20 | 80 | 17 | 4.5 | 3.4 |
| UNC 5/16 X 18 | 90 | 20 | 6 | 4.9 |
| UNC 3/8 X 16 | 100 | 22 | 7 | 5.5 |
| UNC 7/16 X 14 | 100 | 22 | 8 | 6.2 |
| UNC 1/2 X 13 | 110 | 25 | 9 | 7 |
| UNC 9/16 X 12 | 110 | 26 | 11 | 9 |
| UNC 5/8 X 11 | 110 | 27 | 12 | 9 |
| UNC 3/4 X 10 | 125 | 30 | 14 | 11 |
| UNC 7/8 X 9 | 140 | 32 | 18 | 14.5 |
| UNC 1" X 8 | 160 | 36 | 20 | 16 |
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