National Pipe Thread Taper (NPT) is a American standard for tapered threads used on threaded pipes and fittings, popular in the oil and gas industry. NPT and NPTF hand taps produce a taper thread form whose diameter increases or decreases along the length of the thread.
Our range of NPT/NPTF single point threading inserts for lathe screw cutting is compatible with all major threading tool holders (with the exception of Sandvik). Korloy threading inserts are stocked as standard in grade PC3030T, suitable for general machining on steel, stainless and cast iron. We can also offer Vardex threading inserts from Vargus for more demanding applications (e.g. performance threading of stainless steel, titanium or aluminium).
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