Helical coil Thread callouts on a drawing 1

[BEAEROHEAD]

In NX 7.5 I am trying to dimension a Helical coil thread. I get #10-32. I am told ASME standard says it should be .190-32, but I can't get that to happen Can anyone tell me if ASME does recommends not to use #10-32 thd and what standard that might be? Thanks in advance

 

[3DDave]

I came across a situation where production was breaking taps. It was for a 10-32UNF threaded hole. They dug through the tap box and pulled out the 10-32STI taps and proceeded to snap them off.

 

[Tunalover]

Why all the fuss? Just point to the holes with a balloon representing the insert and a flag note saying install the insert in accordance with manufacturer's recommendations. The B/M will say what insert to use. No need to call out any thread size, installation details, or anything! After all, the drawing is not intended to be a Work Instruction!



Tunalover

 

[ewh]

Ditto

“Know the rules well, so you can break them effectively.”
-Dalai Lama XIV