1/4-20 High Speed Steel Thread Forming Roll Tap TIN Coated
0 Thread ChamferFor through hole tappingTHREAD FORMING:Taps have no flutes or cutting edges & providechipless tappingLUBE GROOVES:For lubrication & venting in blind holes (sizes #6-32 and larger)MATERIALS:brass, copper, lead, stainless steels, carbon steels,zinc, most ductile materials producing stringy chipsare great for forming.