I've had a damaged leadscrew come in to my shop that needs to be remanufactured along with a phosphore bronze drive nut. I have a thread gauge for standard full form ACME threads but not for the stub version. Therefore I am finding it difficult to find available data to be able to make a HSS single point turning tool for this particular form.

Has anyone got any tips or data that would allow me to grind the correct sized threading tool?

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