
■ ZELX NI PO is the spiral point tap for nickel base alloys which, with nickel as main composition, have much higher corrosion resistance and much higher heat resistance than Nitride Oxide steels.
ickel base alloys
(m/min) For icon explanation, refer to P.50
Segment:1F
| Size | Class | Code | Chamfer | L (inch) | ℓ (inch) | ℓn (inch) | Ds (inch) | K (inch) | ℓk (inch) | No. of flutes | Type |
| For Metric threads | |||||||||||
| M2.5×0.45 | D3 | Y87320 | 4.5P | 1.812 | 0.295 | 0.5 | 0.141 | 0.11 | 0.187 | 2 | 1 |
| M3×0.5 | D3 | Y87321 | 4.5P | 1.937 | 0.374 | 0.625 | 0.141 | 0.11 | 0.187 | 3 | 1 |
| M3.5×0.6 | D4 | Y87322 | 4.5P | 2 | 0.413 | 0.687 | 0.141 | 0.11 | 0.187 | 3 | 1 |
| M4×0.7 | D4 | Y87323 | 4.5P | 2.125 | 0.453 | 0.75 | 0.168 | 0.131 | 0.25 | 3 | 1 |
| M5×0.8 | D4 | Y87324 | 4.5P | 2.375 | 0.531 | 0.875 | 0.194 | 0.152 | 0.25 | 3 | 1 |
| M6×1 | D5 | Y87325 | 4.5P | 2.5 | 0.591 | 1 | 0.255 | 0.191 | 0.312 | 3 | 2 |
| M7×1 | D5 | Y87326 | 4.5P | 2.718 | 0.669 | 1.125 | 0.318 | 0.238 | 0.375 | 3 | 3 |
| M8×1.25 | D5 | Y87328 | 4.5P | 2.718 | 0.669 | 1.125 | 0.318 | 0.238 | 0.375 | 3 | 3 |
| M8×1 | D5 | Y87327 | 4.5P | 2.718 | 0.669 | 1.125 | 0.318 | 0.238 | 0.375 | 3 | 3 |
| M10×1.5 | D6 | Y87330 | 4.5P | 2.937 | 0.748 | 1.25 | 0.381 | 0.286 | 0.437 | 3 | 3 |
| M10×1.25 | D5 | Y87329 | 4.5P | 2.937 | 0.748 | 1.25 | 0.381 | 0.286 | 0.437 | 3 | 3 |
| M12×1.75 | D6 | Y87332 | 4.5P | 3.375 | 0.984 | - | 0.367 | 0.275 | 0.437 | 3 | 4 |
| M12×1.25 | D5 | Y87331 | 4.5P | 3.375 | 0.984 | - | 0.367 | 0.275 | 0.437 | 3 | 4 |
| For Unified Threads | |||||||||||
| No.2-56UNC | GH2 | Y85523 | 4.5P | 1.75 | 0.256 | 0.437 | 0.141 | 0.11 | 0.187 | 2 | 1 |
| GH2 | Y85501 | ||||||||||
| No.4-40UNC | GH3 GH4 | Y85502 Y85504 | 4.5P | 1.875 | 0.335 | 0.562 | 0.141 | 0.11 | 0.187 | 2 | 1 |
| No.5-40UNC | GH2 | Y85503 | 4.5P | 1.937 | 0.374 | 0.625 | 0.141 | 0.11 | 0.187 | 3 | 1 |