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NPTF - male thread - 60° cone
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NPTF fittings

NPTF (National Pipe Tapered Fine) – American standard of connection, corresponds to the Russian standard GOST 6111-52. In appearance, NPTF is very similar to the BSPT fitting, but is not interchangeable, as it has a different thread pitch - the number of threads per inch, the angle of the thread profile - 60° vs. 55 ° at BSPT. NPTF fittings are most often used on American-made equipment, but recently they have become actively used in Europe, Russia and Asian countries. NPTF fitting is used for installation of high-pressure hydraulic systems, has 60° internal taper and inch taper thread. It is compatible with NPTF, NPSF, NPSM threads. Sealing in this connection is accomplished by crumpling the threads when the nut is tightened.

NPTF socket

Cast's NPTF sockets are made of high quality materials, precision machined and electroplated. You can choose from both carbon steel and stainless steel.

NPTF thread

We offer NPTF fittings with threads from 1/4 to 2''.

Buy NPTF fittings

You can buy NPTF fittings Professional, Standard or Basic from our warehouses in Moscow, St. Petersburg and Murmansk.