Thread Cutters

A thread mill is a cutter that uses an NC milling machine or machining center to machine internal threads. It processes internal threads by performing helical interpolation upon a pilot hole. Milling makes high-accuracy machining possible. In addition, since there is little cutting resistance, there are few problems with breaking, and even if breakage occurs, extraction can be performed easily. Many thread mills are made of carbide, and some coated thread mills are compatible with high-hardness steel, which is difficult to tap. With the same thread pitch, various thread diameters can be machined by changing the program. There are also mills that can perform pilot hole drilling and thread cutting with a single thread mill.