NS Thread callout help 1

[tmox]

I would like to know how to properly call out a NS external thread (shaft) for a bearing locknut. The locknuts are common (N-05 at most suppliers) and the thread O.D. is .969 with 32 tpi. I have found different manufacturers with slightly different tolerances but most seem to be Class B. Some call this same thread 25mmx32 having the same O.D.
This is a replacement shaft for a north american machine.
I am used to calling out standard fractional threads, but in this case do i use decimals? and tolerance?
can someone point me to a definative chart pls.
ps ive look in my machinerys handbook and can't find an NS spec chart

thanx

 

[LLAD]

First off look here......

http://www.whittet-higgins.com/thrddim.php?id=1

then with tolerances (high low limits) add Major Dia., pitch dia., minor dia., threads per inch, and possibly the locknut number....

However know your customer, in your case simply
.969-32 might be enough or they may want all the above.