
■ ZELX NI SP is the spiral fluted 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.
| ow carbon steels | Medium carbon steels | Stainless steels | ickel base alloys |
| 5〜15 | 5〜15 | 5〜15 | 5〜10 |
(m/min) For icon explanation, refer to P.50 TYPE:1 TYPE:2
Segment:1D
| 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 | Y88320 | 3P | 1.812 | 0.157 | 0.5 | 0.141 | 0.11 | 0.187 | 3 | 1 |
| M3×0.5 | D3 | Y88321 | 3P | 1.937 | 0.197 | 0.625 | 0.141 | 0.11 | 0.187 | 3 | 1 |
| M3.5×0.6 | D4 | Y88322 | 3P | 2 | 0.276 | 0.687 | 0.141 | 0.11 | 0.187 | 3 | 1 |
| M4×0.7 | D4 | Y88323 | 3P | 2.125 | 0.276 | 0.75 | 0.168 | 0.131 | 0.25 | 3 | 1 |
| M5×0.8 | D4 | Y88324 | 3P | 2.375 | 0.354 | 0.875 | 0.194 | 0.152 | 0.25 | 3 | 1 |
| M6×1 | D5 | Y88325 | 3P | 2.5 | 0.433 | 1 | 0.255 | 0.191 | 0.312 | 3 | 2 |
| M7×1 | D5 | Y88326 | 3P | 2.718 | 0.433 | 1.125 | 0.318 | 0.238 | 0.375 | 3 | 3 |
| M8×1.25 | D5 | Y88328 | 3P | 2.718 | 0.472 | 1.125 | 0.318 | 0.238 | 0.375 | 3 | 3 |
| M8×1 | D5 | Y88327 | 3P | 2.718 | 0.472 | 1.125 | 0.318 | 0.238 | 0.375 | 3 | 3 |
| M10×1.5 | D6 | Y88330 | 3P | 2.937 | 0.512 | 1.25 | 0.381 | 0.286 | 0.437 | 3 | 3 |
| M10×1.25 | D5 | Y88329 | 3P | 2.937 | 0.472 | 1.25 | 0.381 | 0.286 | 0.437 | 3 | 3 |
| M12×1.75 | D6 | Y88332 | 3P | 3.375 | 0.591 | - | 0.367 | 0.275 | 0.437 | 3 | 4 |
| M12×1.25 | D5 | Y88331 | 3P | 3.375 | 0.551 | - | 0.367 | 0.275 | 0.437 | 3 | 4 |
| For Unified Threads | |||||||||||
| No.2-56UNC | GH2 | Y87523 | 3P | 1.75 | 0.157 | 0.437 | 0.141 | 0.11 | 0.187 | 3 | 1 |
| No.4-40UNC | GH2 GH3 GH2 | Y87501 Y87502 Y87002 Y87583 | 3P 1.5P | 1.875 | 0.236 | 0.562 | 0.141 | 0.11 | 0.187 | 3 | 1 |
| GH4 | Y87512 | 3P |