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1"-24tpi thread callout...
2

1"-24tpi thread callout...

1"-24tpi thread callout...

(OP)
I'm finishing a print to be sent out for manufacturing, it has an odd thread on it: 1-24tpi, it will be single pointed on a cnc lathe. Should I callout the major/minor/pitch diameters?

Nick

RE: 1"-24tpi thread callout...

If the thread is defined by a standard, then no.
If the thread is a custom thread for your application, then yes and include the full description of the tooth form, angles, radii, etc.

"Wildfires are dangerous, hard to control, and economically catastrophic."

Ben Loosli

RE: 1"-24tpi thread callout...

I would just because thats how I am.
but most engineers do not. sorry to say.

all the below is optional!!!!
is it a large qty?
do you have thread gages? gaes helps prevent from diffrences in using thread wires.

does receiving inspect have to calculate meas. over three wires?
do you have the same wires as the vendor, or does the vendor have gages?
especially odd ball specials

I am reviewing the ANSI B1.1 and I do not observe this Threads per Inch.

Mfgenggearr

RE: 1"-24tpi thread callout...

(OP)
finally found it in my Machinery's Handbook...

its 1-24UNS-2A, and per looslib, I'm just going to call out using that standard. If they call I can give them the numbers right away anyway.

Nick

RE: 1"-24tpi thread callout...

More information - maybe less chance of a mistake!!

RE: 1"-24tpi thread callout...

Kenat

Very well done

Mfgenggear

RE: 1"-24tpi thread callout...

(OP)
Kenat- Thanks, I'll be revising the print this afternoon....

Nick

RE: 1"-24tpi thread callout...

Yeah, I do for both Box and Pin, every thread. On the Pin, I also give the three wire measure. That's just me, a particular habit. Can honestly say that shops love it.

Regards,
Cockroach

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