
■ Suitable for tapping stainless steels, chrome steels and E chrome molybdenum steels. Oxide NPT 3/4~
ow carbon steels Alloy steels Stainless steels
5 5 5
For icon explanation, refer to P.50 TYPE:1 TYPE:2
Segment:1H
| Size | Class | Code | Chamfer | L (inch) | ℓ (inch) | Projection (inch) | Ds (inch) | K (inch) | ℓk (inch) | No. of flutes | Type |
| For American Pipe | Threads | ||||||||||
| NPT 1/16-27 | ANSI G | Y83640 | 2.5P | 2.125 | 0.687 | 0.312 | 0.312 | 0.234 | 0.375 | 4 | 1 |
| NPT 1/8-27 | ANSI G | Y83641 Y83642 | 2.5P | 2.125 | 0.75 | 0.312 | 0.437 0.312 | 0.328 0.234 | 0.375 | 4 | 1 2 |
| NPT 1/4-18 | ANSI G | Y83643 | 2.5P | 2.437 | 1.062 | 0.459 | 0.562 | 0.421 | 0.437 | 4 | 1 |
| NPT 3/8-18 | ANSI G | Y83644 | 2.5P | 2.562 | 1.062 | 0.454 | 0.7 | 0.531 | 0.5 | 4 | 1 |
| NPT 1/2-14 | ANSI G | Y83645 | 2.5P | 3.125 | 1.375 | 0.579 | 0.687 | 0.515 | 0.625 | 4 | 2 |
| NPT 3/4-14 | ANSI G | Y83646 | 2.5P | 3.25 | 1.375 | 0.565 | 0.906 | 0.679 | 0.687 | 4 | 2 |
| NPT 1-11.5 | ANSI G | Y83647 | 2.5P | 3.75 | 1.75 | 0.678 | 1.125 | 0.843 | 0.812 | 4 | 2 |