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National Pipe Taper (NPT)

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

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Part No.

DescriptionShank Dia.Threads Per Inch Price Qty Add More
NPT-1/16-D 1/16 NPT HSS Die27 £87.09
NPT-1/8-D 1/8 NPT HSS Die x1 OD27 £31.25
NPT-1/8-DN 1/8 NPT HSS Die Nut27 £16.85
NPT-1/4-D 1/4 NPT HSS Die1.31318 £37.13
NPT-1/4-DN 1/4 NPT HSS Die Nut18 £37.71
NPT-3/8-D 3/8 NPT HSS Die18 £48.57
NPT-3/8-DN 3/8 NPT HSS Die Nut18 £33.39
NPT-1/2-D 1/2 NPT HSS Die x 2"OD14 £48.53
NPT-1/2-DN 1/2 NPT HSS Die Nut14 £66.57
NPT-3/4-D 3/4 NPT HSS Die14 £82.08
NPT-3/4-DN 3/4 NPT HSS Die Nut14 £92.88
NPT-1-D 1in NPT HSS Die11 £179.19
NPT-1-DN 1in NPT HSS Die Nut12 £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 Nut12 £157.66
NPT-1.1/2-D 1.1/2 NPT HSS Die12 £256.08
NPT-1.1/2-DN 1.1/2 NPT HSS Die Nut12 £256.08
Click on part number to check stock