Thread specification

[EGO6]

I am making a drawing that calls for .750-40UNS thread. I would like to know what specification should I be referring to. I have looked at AS8879 and MS7742...this size is not listed.

 

[Neubaten]

MIL-S-8879

Give it a look.


You can search MIL stuff in this page:

http://assist.daps.dla.mil/quicksearch/

 

[EGO6]

Thanx. I looked in the document but since I didn't find the appropriate thread size in any tables, I thought there was no provision for my thread size. There is in fact coverage in the notes area. Thanx again

 

[PeterStock]

I would add a referenct to the thread callout to the note were the thread is further defined.

Peter Stockhausen
Senior Design Analyst (Checker)
Infotech Aerospace Services

 

[KENAT]

I would suggest ASME B1.1-2003 UNIFIED INCH THREADS is the most appropriate place to look.

There are some fairly detailed requirements on how UNS (S is generally interpreted as special i.e. custom/non standard) threads are to be specified. Fortunately this has come up before: faq404-1480

KENAT,

Have you reminded yourself of faq731-376 recently, or taken a look at posting policies:

http://eng-tips.com/market.cfm?