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kcleere
05-30-2010, 12:37 PM
I need to find a source for 7/32-24 hex nuts and all the sources I know of don't even list that size.

Might anyone know of a source? It seems like it might be the same as a #12-24?

JoeFin
05-30-2010, 12:51 PM
Never heard of a 7/32

6/32
8/24
10/24

sure your not looking at a metric bolt

saltmine
05-30-2010, 01:01 PM
I think he might be measuring the head of the bolt, Joe.

7/32" head bolts are common in the automotive business for holding HVAC ducting and panels under the dash together. Most are 4MM or self tapping sheet metal screws.

John Stevenson
05-30-2010, 01:11 PM
Norton tappet size.

http://www.tracytools.com/tapsanddiesspecials.htm

.

SDL
05-30-2010, 01:38 PM
I need to find a source for 7/32-24 hex nuts and all the sources I know of don't even list that size.

Might anyone know of a source? It seems like it might be the same as a #12-24?

If the thread form is 60 Deg then looks like #12-24 which is listed as 2 thou under 7/32, no 7/32 in machinery handbook on UNC coarse. If 55 Deg form then as per Sir John.

Steve Larner

kcleere
05-30-2010, 01:42 PM
What I'm measuring are threads of a rod threaded on each end and about 8+ inches long used to hold the end bells on a 40's era Delta 3 Phase motor.

It fits the 7/32-24 threaded hole in my screw-checker plate and I've seen taps as shown above for this.

I would hope someone didn't slip a metric rod into this thing over the last 70years and I didn't check it with my metric plate but guess I will.

Thanks very much for the replies.

kcleere
05-30-2010, 01:49 PM
Actually I think you got it...I looked at the matix on the thread plate and 7/32 shares a row with #12. I overlooked it. With the rod fully threaded in the plate there is "just" enough play that I bet it fits a 12 and would be a little tighter.

The thread plate itself is cheap and run of the mill....I need to find a more reliable and accurate (thicker) one anyway.

Thanks


If the thread form is 60 Deg then looks like #12-24 which is listed as 2 thou under 7/32, no 7/32 in machinery handbook on UNC coarse. If 55 Deg form then as per Sir John.

Steve Larner