National Pipe Taper (NPT)
NPT - National Pipe Taper Dies and Dienuts. to ANSI B1.20.1.
Split circular Dies are stocked as standard. General purpose dies for use on most common materials. The chamfer is ground, with lapped threads and cut thread consistently to size.
Dies are available in the solid version on request and also with a spiral entry. The spiral entry causes a peeling cut with swarf being forced ahead of the die - use recommended for use in attachments or machines.
Left Hand Dies also available for left hand threads.
HSS HEX Dienuts for general purpose repairing and cleaning of threads. Available on request for Left Hand Threads.
If your size requirement is not listed please enquire all Dies and Die nuts can be sourced.
Click on part number to check stock
Part No. |
Description | Shank Dia. | Threads Per Inch | Price | Qty | Add | More |
| NPT-1/16-D | 1/16 NPT HSS Die | 27 | £87.09 | ||||
| NPT-1/8-D | 1/8 NPT HSS Die x1 OD | 27 | £31.25 | ||||
| NPT-1/8-DN | 1/8 NPT HSS Die Nut | 27 | £16.85 | ||||
| NPT-1/4-D | 1/4 NPT HSS Die | 1.313 | 18 | £37.13 | |||
| NPT-1/4-DN | 1/4 NPT HSS Die Nut | 18 | £37.71 | ||||
| NPT-3/8-D | 3/8 NPT HSS Die | 18 | £48.57 | ||||
| NPT-3/8-DN | 3/8 NPT HSS Die Nut | 18 | £33.39 | ||||
| NPT-1/2-D | 1/2 NPT HSS Die x 2"OD | 14 | £48.53 | ||||
| NPT-1/2-DN | 1/2 NPT HSS Die Nut | 14 | £66.57 | ||||
| NPT-3/4-D | 3/4 NPT HSS Die | 14 | £82.08 | ||||
| NPT-3/4-DN | 3/4 NPT HSS Die Nut | 14 | £92.88 | ||||
| NPT-1-D | 1in NPT HSS Die | 11 | £179.19 | ||||
| NPT-1-DN | 1in NPT HSS Die Nut | 12 | £138.35 | ||||
| NPT-2-D | 2 NPT HSS Die x 4"OD | £167.85 | |||||
| NPT-1.1/4-D | 1.1/4 NPT HSS Die x 3"OD | £167.85 | |||||
| NPT-1-1/4-DN | 1-1/4 NPT HSS Die Nut | 12 | £157.66 | ||||
| NPT-1.1/2-D | 1.1/2 NPT HSS Die | 12 | £256.08 | ||||
| NPT-1.1/2-DN | 1.1/2 NPT HSS Die Nut | 12 | £256.08 |