
■ Spiral pointed tap to cut internal threads for helical coil to enter. Oxide
Low carbon steels Medium carbon steels
(m/min) (m/min)
Segment:1E
| Size | Class | Code | Chamfer | L (inch) | ℓ (inch) | ℓn (inch) | ℓs (inch) | Ds (inch) | K (inch) | ℓk (inch) | No. of flutes | TYPE |
| For i | Unified | i Thread | i s | |||||||||
| No.2-56UNC | GH1 | PUUN2E1NEX | 5P | 2.205 | 0.354 | 0.709 | 1.28 | 0.141 | 0.11 | 0.187 | 2 | 1 |
| No.2-56UNC | GH2 | PUUN2E2NEX | 5P | 2.205 | 0.354 | 0.709 | 1.28 | 0.141 | 0.11 | 0.187 | 2 | 1 |
| No.4-40UNC | GH1 | PUUN4H1NEX | 5P | 2.48 | 0.512 | 0.827 | 1.496 | 0.168 | 0.131 | 0.25 | 2 | 1 |
| No.4-40UNC | GH2 | PUUN4H2NEX | 5P | 2.48 | 0.512 | 0.827 | 1.496 | 0.168 | 0.131 | 0.25 | 2 | 1 |
| No.6-32UNC | GH1 | PUUN6J1NEX | 5P | 2.756 | 0.551 | 0.945 | 1.654 | 0.194 | 0.131 | 0.25 | 2 | 1 |
| No.6-32UNC | GH2 | PUUN6J2NEX | 5P | 2.756 | 0.551 | 0.945 | 1.654 | 0.194 | 0.131 | 0.25 | 2 | 1 |
| No.8-32UNC | GH1 | PUUN8J1NEX | 5P | 3.15 | 0.591 | 0.984 | 1.929 | 0.22 | 0.165 | 0.281 | 2 | 1 |
| No.8-32UNC | GH2 | PUUN8J2NEX | 5P | 3.15 | 0.591 | 0.984 | 1.929 | 0.22 | 0.165 | 0.281 | 2 | 1 |
| No.10-24UNC | GH2 | PUUNAM2NEX | 5P | 3.15 | 0.591 | 1.181 | 1.713 | 0.255 | 0.191 | 0.312 | 2 | 1 |
| No.10-24UNC | GH3 | PUUNAM3NEX | 5P | 3.15 | 0.591 | 1.181 | 1.713 | 0.255 | 0.191 | 0.312 | 2 | 1 |
| No.10-32UNF | GH2 | PUUNAJ2NEX | 5P | 3.15 | 0.591 | 1.181 | 1.713 | 0.255 | 0.191 | 0.312 | 2 | 1 |
| No.10-32UNF | GH3 | PUUNAJ3NEX | 5P | 3.15 | 0.591 | 1.181 | 1.713 | 0.255 | 0.191 | 0.312 | 2 | 1 |
| 1/4-20UNC | GH2 | PUU04N2NEX | 5P | 3.543 | 0.748 | 1.378 | 1.831 | 0.318 | 0.238 | 0.375 | 2 | 2 |
| 1/4-20UNC | GH3 | PUU04N3NEX | 5P | 3.543 | 0.748 | 1.378 | 1.831 | 0.318 | 0.238 | 0.375 | 2 | 2 |
| 1/4-28UNF | GH2 | PUU04K2NEX | 5P | 3.543 | 0.748 | 1.378 | 1.831 | 0.318 | 0.238 | 0.375 | 2 | 2 |
| 1/4-28UNF | GH3 | PUU04K3NEX | 5P | 3.543 | 0.748 | 1.378 | 1.831 | 0.318 | 0.238 | 0.375 | 2 | 2 |
| 5/16-18UNC | GH2 | PUU05O2NEX | 5P | 3.937 | 0.906 | 1.535 | 2.067 | 0.381 | 0.286 | 0.437 | 2 | 2 |