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Rethreading dies - pipe threads

Rethreading dies - pipe threads

Rethreading dies - pipe threads

(OP)
I'm curious about the difference between a thread cutting die (pipe thread) and a rethreading die. A rethreading die is suppose to prevent the die from removing material and prevent the cutting of a new thread path ... but how does it do this?

RE: Rethreading dies - pipe threads

A rethreading die is rounded where the cutting edge of a threading die would be. Most bolt manufacturers use this method to "roll" the material to shape rather then cut it. Denser stronger thread is the result.-----Phil

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