H.S.S. 4-80 dies are very rare. They are designed to thread 4-80 micro precision threads on rod stock. These threads are used by knife and gun makers to create a maximum adjust threading, or to create a thread that is less prone to "back-out", a common issue with standard coarse threads.

Try a 4-80 thread on your next project and you'll never go back, or back-out again!!!

Die Thread - 4-80
Ground HSS
Round Type
Diameter - 1.0
Fits 1" die handle


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