Stanley Engineered Fastening - Spiralock Cold Forming Taps

Powdered metallurgy grade of high speed steel Material flows without generating chips and makes threads stronger Lower risk of breakage, particularly in small diameters Plug and bottom chamfer Cold forming taps produce a thread by deforming material instead of removing it. The starting minor diameter is larger and must be held to a tighter tolerance than with standard taps to ensure the threads fill out properly. Forming taps are suitable for all ductile materials with an elongation value above 10%, such as aluminum, brass, copper, and mild steels. Lubrication with cutting oil is preferred.