THR NPT 3/8×18 10.6xD12x75 carbide thread Mill
THR NPT 3/8×18 10.6xD12x75 carbide thread Mill for CNC machining of 3/8-18 NPT internal pipe threads. Designed for stainless steel, P20, D2 and alloy steel, it provides accurate taper, smooth cutting and long tool life. With a 10.6 mm cutting diameter and rigid D12 shank, it ensures stable, burr-free threading for hydraulic, pneumatic and industrial applications.
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Description
THR NPT 3/8×18 10.6xD12x75 carbide thread Mill engineered for CNC machining of 3/8-18 NPT (National Pipe Taper) internal threads used in hydraulic systems, pneumatic fittings, mould tooling and industrial pipe connections. This CNC threading cutter is designed to deliver accurate taper angle, clean thread profile and excellent surface finish in materials such as stainless steel, P20, D2 tool steel, alloy steel and hardened engineering metals.
Manufactured from premium micro-grain carbide rod, this thread mill provides exceptional wear resistance, cutting stability and thermal strength, making it suitable for high-speed CNC machining. Compared to traditional tapping, thread milling offers better chip control, lower torque, higher accuracy and reduced tool breakage, especially when machining hard, sticky or interrupted materials. This makes it the preferred threading solution for die & mould shops, aerospace machining centers and automotive component manufacturers.
With a 10.6 mm cutting diameter, D12 shank and 75 mm overall length, this tool delivers high rigidity and vibration-free cutting even in deep NPT thread applications. The rigid shank ensures low run-out and precise concentricity, resulting in leak-proof, perfectly formed pipe threads that meet industrial sealing requirements.
This tool is commonly searched as NPT thread mill, carbide thread milling cutter, CNC pipe thread tool, solid carbide threading tool, precision carbide tools India and CNC cutting tools manufacturers, making it highly visible to buyers searching for industrial cutting tools suppliers and CNC tools supplier in India.
The THR NPT 3/8×18 10.6xD12x75 is widely used in hydraulic manifolds, valve bodies, pneumatic blocks, mould inserts and fluid connectors, where high thread accuracy and durability are critical. It allows machinists to maintain tight tolerances, smooth sealing surfaces and repeatable quality across large production runs.
This thread mill supports high-performance CNC threading, reduced tool inventory and improved machining efficiency, making it an essential tool for any modern precision machining workshop working with NPT pipe threads.















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