
NPSF NPSF ANSI
Hand Taps for American Dryseal Parallel Pipe Threads Hand Taps for American Dryseal Parallel Pipe Threads
■ The NPSF is a hand tap for the American dry seal parallel pipe threads and is used for screw tapping of products whose main purpose is the Oxide tightness of threaded parts in connection with Recommended Tapping Speed depending on Materials pipe parts etc.
| Low carbon steels | Medium carbon steels | High carbon steels | |
| 5低炭素鋼10 | 5中炭素鋼10 | 5高炭素鋼10 | |
| (m/min) | (m/min) | ( m/ min) |
TYPE:1 TYPE:2
Segment:1G
| Size | Class | Code | Chamfer | L (inch) | ℓ (inch) | Ds (inch) | K (inch) | ℓk (inch) | No. of flutes | TYPE |
| For Dryse | al Americ | an Pipe T | hreads | l | ||||||
| 1/8-27 NPSF | ANSI G | Y83326 | 4P | 2.125 | 0.75 | 0.437 | 0.328 | 0.375 | 4 | 1 |
| 1/8-27 NPSF | ANSI G | Y83326BR | 4P | 2.125 | 0.75 | 0.437 | 0.328 | 0.375 | 4 | 1 |
| 1/8-27 NPSF | ANSI G | Y83327 | 4P | 2.125 | 0.75 | 0.312 | 0.234 | 0.375 | 4 | 2 |
| 1/8-27 NPSF | ANSI G | Y83327BR | 4P | 2.125 | 0.75 | 0.312 | 0.234 | 0.375 | 4 | 2 |
| 1/4-18 NPSF | ANSI G | Y83328 | 4P | 2.437 | 1.062 | 0.562 | 0.421 | 0.437 | 4 | 1 |
| 1/4-18 NPSF | ANSI G | Y83328BR | 4P | 2.437 | 1.062 | 0.562 | 0.421 | 0.437 | 4 | 1 |
| 3/8-18 NPSF | ANSI G | Y83329 | 4P | 2.562 | 1.062 | 0.7 | 0.531 | 0.5 | 4 | 1 |
| 1/2-14 NPSF | ANSI G | Y83330 | 4P | 3.125 | 1.375 | 0.687 | 0.515 | 0.625 | 4 | 2 |
| 1/2-14 NPSF | ANSI G | Y83330BR | 4P | 3.125 | 1.375 | 0.687 | 0.515 | 0.625 | 4 | 2 |
| 3/4-14 NPSF | ANSI G | Y83331 | 4P | 3.25 | 1.375 | 0.906 | 0.679 | 0.687 | 5 | 2 |
| 3/4-14 NPSF | ANSI G | Y83331BR | 4P | 3.25 | 1.375 | 0.906 | 0.679 | 0.687 | 5 | 2 |
| 1 -11 1/2 NPSF | ANSI G | Y83332 | 4P | 3.75 | 1.75 | 1.125 | 0.843 | 0.812 | 5 | 2 |
| 1 -11 1/2 NPSF | ANSI G | Y83332BR | 4P | 3.75 | 1.75 | 1.125 | 0.843 | 0.812 | 5 | 2 |