VOLKEL HSS Round Dies - NPT
VOLKEL HSS Round Dies – NPT
american tapered pipe-thread, taper 1:16
| Nominal Diameter mm |
Ø o / d |
| NPT 1/16 x 27 | 25 x 9 |
| NPT 1/8 x 27 | 38 x 14 |
| NPT 1/4 x 18 | 38 x 14 |
| NPT 3/8 x 18 | 38 x 14 |
| NPT 1/2 x 14 | 50 x 22 |
| NPT 5/8 x 14 | 50 x 22 |
| NPT 3/4 x 14 | 50 x 24 |
| NPT 7/8 x 14 | 50 x 24 |
| NPT 1″ x 11 | 50 x 24 |
| NPT 1.1/4 x 11.5 | 75 x 26 |
| NPT 1.1/2 x 11.5 | 90 x 27 |
| NPT 2″ x 11.5 | 105 x 28 |
VOLKEL Thread circular round dies are used for producing external threads. Round dies are round and usually have three or more cutting edges. They are either used for manual use of die holders or clamped into the quill to use in a turning lathe.
The chips are discharged through the plane holes in round dies. VOLKEL Round dies are available slotted or solid, with solid being the most commonly used style. The groove in slotted round dies allows these to be adjusted if worn while solid dies are able to produce more precise pitch of thread. Dies also come in round solid circular form or Hexagon die nut Form.
NPT, American piped tapered thread or national pipe thread is a taper thread standard commonly used in America. NPT threads have a taper angle of 1:16 and a thread angle of 60°. NPT threads have a flattened crest and root instead of rounded. NPT or National pipe thread standards for short, are United States national technical standards for screw threads used on threaded pipes and pipe fittings. They include both tapered and straight thread series for various purposes, including rigidity, pressure-tight sealing, or both.