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A place where restoration project-type threads can go to avoid falling off the main page in the WIX hangar. Feel free to start threads on Restoration projects and/or warbird maintenance here. Named in memoriam for Gary Austin, a good friend of the site and known as RetroAviation here. He will be sorely missed.
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Bolt Thread standards

Tue Mar 11, 2014 11:16 am

A question for the machine-shop crowd.

Are NS threads and UNS threads the same?

Re: Bolt Thread standards

Tue Mar 11, 2014 11:47 am

For the most part they are the same with only minor differences. Here's a web site that give you a good understanding.

http://www.ring-plug-thread-gages.com/ti-N-vs-UN.htm

Re: Bolt Thread standards

Tue Mar 11, 2014 5:18 pm

Thanks! Apparently, in modern terms, my 5/8" 24NS is now 5/8"- 24 UNS-2A
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