
| Overall length | Thread length | Shank dia. Size of square | Length of square | |||||||
| T-CI Hand | Taps f | or Cast Iro | ns | L | ℓ | Ds K | ℓk | |||
| Size | Class | Code | Chamfer | L (inch) | ℓ (inch) | Ds (inch) | K (inch) | ℓk (inch) | No. of flutes | Type |
| 7/16-20UNF | GH5 | Y86025 Y86026 | 4P 1.5P | 3.156 | 1.437 | 0.323 | 0.242 | 0.406 | 4 | 3 |
| 1/2-13UNC | GH3 GH5 | Y86027 Y86028 Y86029 Y86030 | 4P 1.5P 4P 1.5P | 3.375 | 1.656 | 0.367 | 0.275 | 0.437 | 4 | 3 |
| 1/2-20UNF | GH3 GH5 | Y86031 Y86032 Y86033 Y86034 | 4P 1.5P 4P 1.5P | 3.375 | 1.656 | 0.367 | 0.275 | 0.437 | 4 | 3 |
| 9/16-12UNC | GH3 | Y86035 Y86036 | 4P 1.5P | 3.593 | 1.656 | 0.429 | 0.322 | 0.5 | 4 | 3 |
| 9/16-18UNF | GH3 | Y86037 Y86038 | 4P 1.5P | 3.593 | 1.656 | 0.429 | 0.322 | 0.5 | 4 | 3 |
| 5/8-11UNC | GH3 | Y86039 Y86040 | 4P 1.5P | 3.812 | 1.812 | 0.48 | 0.36 | 0.562 | 4 | 3 |
| 5/8-18UNF | GH3 | Y86041 Y86042 | 4P 1.5P | 3.812 | 1.812 | 0.48 | 0.36 | 0.562 | 4 | 3 |
| 3/4-10UNC | GH3 | Y86043 Y86044 | 4P 1.5P | 4.25 | 2.000 | 0.59 | 0.422 | 0.687 | 4 | 3 |
| 3/4-16UNF | GH3 | Y86045 Y86046 | 4P 1.5P | 4.25 | 2.000 | 0.59 | 0.422 | 0.687 | 4 | 3 |