Tap compatability

I have a set of UNF taps and dies but the problem is there are no bottoming taps and the size that I need I only have one so do not want to shorten it to make a bottoming tap other wise I will not have one that is a starter tap

Looking around for a 3/16" bottoming tap I keep coming up with either none available but they show a 10-32 which is 0.002" larger than the 3/16" is this compatible.

Below 1/4" UNF and UNC use a number system rather than the nominal diameter so yes #10-32 UNF is their nearest to 3/16" dia and you can happily thread 3/16" rod to that size.

If you happen to have 2BA that will also do for 3/16"

Edited By JasonB on 19/09/2023 19:37:17

Ignoring the angle!

I freely admit to getting very confused with threads, but looking at Tracy Tools website wondered whether 3/16 x 32 UNS would do the job?

Brian G

Thank you Jason I am so use to using the imperial sizes when going down below 1/4" but that was many moons ago, and have only come across the numbering system like the 10-32tpi system with the modeling side of things.

Drill Service have a 10-32UNF bottoming tap for £4.60p, plus VAT of course.

Andrew

Thank you guys but have now found some 3/16"UNF ordered. The main thing was that I have made some parts using my one I have as well as making some male threads, but this one part has a shallow hole which needs to be threaded right to the bottom.

With all the taps and die sets and loose ones that I own there are still some that I need