d | Threads per inch | H | F | 1/4 | 28 | 4 | 7/16 | 5/16 | 24 | 4,8 | 1/2 | 3/8 | 24 | 5,6 | 9/16 | 7/16 | 20 | 6,4 | 11/16 | 1/2 | 20 | 7,9 | 3/4 | 9/16 | 18 | 7,9 | 7/8 | 5/8 | 18 | 9,5 | 15/16 | 3/4 | 16 | 10,7 | 1.1/8 | 7/8 | 14 | 12,3 | 1.5/16 | 1.IN. | 14 | 13,9 | 1.1/2 | 1.1/8 | 12 | 15,5 | 1.11/16 | 1.1/4 | 12 | 18,3 | 1.7/8 | 1.3/8 | 12 | 19,8 | 2.1/16 | 1.1/2 | 12 | 21,4 | 2.1/4 |
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