Waukesha, Wisconsin – Walter has expanded its Paradur HT HSS-E blind-hole tap range by adding UNC thread dimensions. Previously available in dimensions M4-M36 and M10x1-M33x2, Walter has now expanded the range of the taps to include dimensions UNC 1/4-UNC 1. These new HSS-E taps are particularly suited to cutting deep threads of up to 3.5 x DN. Like their predecessors, they include features such as straight flutes, axial through coolant, and a TiN coating.
The specially designed cutting-edge geometry of the Paradur HT tap range offers excellent chip control. Axial through-coolant reliably flushes short chips out of blind holes. The taps are made for machining steel with tensile strength of 98kpsi to 200kpsi (200HB to 410HB) and for cast iron, especially for GJS (GGG).