Thread calculator?

We do some goofy threads here (7"-16tpi, 4-1/2"-10tpi, etc.), and some
of our 'machinists' want me to give them all the pertinant threading
info...being lazy, er efficient.... I'm wondering if there's a website
that'll give me things like minor diameter of external threads, major
dia. of internal threads, etc without having to do the calcs. myself.

Thanks

 

Machinery's Handbook has tables which show all you need plus tolerances
for a lot of thread pitches. It's probably where your machinist looks
if it is not on the drawing.

Timelord

 

Yeah, I have that, just didn't feel like digging into it <lazy>, and our
machinist came and asked me for the info...never mind the 35 years
experience he keeps bragging about...

 

For acme threads

http://icrank.com/cgi-bin/pageman/pageout.cgi?path=/data/acme/acme.htm&t=
http://icrank.com/cgi-bin/pageman/pageout.cgi?path=/referencedata.htm&t=2

Ben