Tools & Gear Taps & Dies Chrome Alloy Taps

4220-S2 Metric Coarse Chrome Alloy Tap and Button Die Set Chrome Alloy Metric Coarse Intermediate Taps and 1" Button Dies. Used as thread chasers to clean an existing thread. They can also be used to create a new threads in non-ferrous metals and plastics. Chrome alloy taps and dies are not suitable for creating precision, safety or critical threads. Metric Coarse angle of thread is 60 degrees. The crest is flat and the thread has clearance at the root allowing external thread and internal thread to engage well. Larger root radius and lower thread height enable easy screw thread processing and increase thread screw strength. The major diameter of external thread and pitch are specified by a simple numerical value (most commonly measured in millimetres).