Inspection for thread gauge plugs
Hi all,

I am in quality at a machine shop and we sometimes want to make our own checking gauge because we are only making a few parts. How do I know what size to make the gauge? I have been asked this by our metrology service also and I just tell them to make them to whatever the standard is. Any help would be appreciated. Thank you.
1 Replies
You will Need Thread Wire set With Holder, for the Pitch of thread, Micrometer, Machinist Hand Book & a Calculator.

[there are thread Calculators, excel sheets and charts on the net. [Major, minor Diameters, Pitch Diameter]
there is a limit for calculating threads, If the pitch is not standard or thread is to Large or small the calculators will error out.