
■ ZELX NI SP STI is the tap for nickel base alloys which, with nickel as main composition, have much higher corrosion resistance and higher heat resistance than steels, Nitride Oxide and produces threads oversize enough to accommodate Recommended Tapping Speed depending on Materials helical coil wire thread inserts.
| 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 | ℓ | ℓn | Ds | K | ℓk | No. of l | Type |
| (inch) | (inch) | (inch) | (inch) | (inch) | (inch) | flutes | |||||
| For Helical Coil Wire S i | crew Thr i | ead Inserts, fo i | r Unified Thr | i eads | |||||||
| STI No.2-56UNC | GH2 | Y87400 | 3P | 1.875 | 0.236 | 0.562 | 0.141 | 0.11 | 0.187 | 3 | 1 |
| STI No.4-40UNC | GH1 GH2 GH3 | Y87403 Y87404 Y87004 Y87420 Y87419 | 3P 1.5P 3P 1.5P | 2 | 0.276 | 0.687 | 0.141 | 0.11 | 0.187 | 3 | 1 |
| STI No.6-32UNC | GH2 | Y87408 Y87008 | 3P 1.5P | 2.375 | 0.354 | 0.875 | 0.194 | 0.152 | 0.25 | 3 | 1 |
| GH3 | Y87424 | 3P | |||||||||
| STI No.6-40UNF | GH2 | Y87409 | 3P | 2.125 | 0.276 | 0.75 | 0.168 | 0.131 | 0.25 | 3 | 1 |
| GH1 | Y81409 | ||||||||||
| STI No.8-32UNC | GH2 GH3 | Y87410 Y87426 | 3P | 2.375 | 0.354 | 0.937 | 0.22 | 0.165 | 0.281 | 3 | 1 |
| STI No.10-24UNC | GH2 GH3 | Y87412 Y87428 Y87028 | 3P 1.5P | 2.5 | 0.433 | 1 | 0.255 | 0.191 | 0.312 | 3 | 2 |
| STI No.10-32UNF | GH2 GH3 GH5 | Y87413 Y87429 Y87029 Y87057 | 3P 1.5P | 2.5 | 0.354 | 1 | 0.255 | 0.191 | 0.312 | 3 | 2 |