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.

Part No.	Description	Shank Dia.	Threads Per Inch	Price
NPT-1/16-D	1/16 NPT HSS Die	0.000	27	£91.44
NPT-1/8-D	1/8 NPT HSS Die x1 OD	0.000	27	£32.81
NPT-1/8-DN	1/8 NPT HSS Die Nut	0.000	27	£17.69
NPT-1/4-D	1/4 NPT HSS Die	1.313	18	£38.99
NPT-1/4-DN	1/4 NPT HSS Die Nut	0.000	18	£39.60
NPT-3/8-D	3/8 NPT HSS Die	0.000	18	£51.00
NPT-3/8-DN	3/8 NPT HSS Die Nut	0.000	18	£35.06
NPT-1/2-D	1/2 NPT HSS Die x 2"OD	0.000	14	£50.96
NPT-1/2-DN	1/2 NPT HSS Die Nut	0.000	14	£69.90
NPT-3/4-D	3/4 NPT HSS Die	0.000	14	£86.18
NPT-3/4-DN	3/4 NPT HSS Die Nut	0.000	14	£97.52
NPT-1-D	1in NPT HSS Die	0.000	11	£188.15
NPT-1-DN	1in NPT HSS Die Nut	0.000	12	£145.27
NPT-2-D	2 NPT HSS Die x 4"OD	0.000	0	£176.24
NPT-1.1/4-D	1.1/4 NPT HSS Die x 3"OD	0.000	0	£176.24
Part No.	Description	Shank Dia.	Threads Per Inch	Price
NPT-1-1/4-DN	1-1/4 NPT HSS Die Nut	0.000	12	£165.54
NPT-1.1/2-D	1.1/2 NPT HSS Die	0.000	12	£268.88
NPT-1.1/2-DN	1.1/2 NPT HSS Die Nut	0.000	12	£268.88