Author Topic: Nipple sizes  (Read 2239 times)

44caliberkid

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Nipple sizes
« on: September 20, 2009, 05:56:57 PM »
I want to know what the dimensions on nipple sizes refer to, specifically the 6mm-.75.   I assume the 6mm is the diameter of the threaded portion, but what is the .75?

Offline Pettifogger

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Re: Nipple sizes
« Reply #1 on: September 20, 2009, 05:59:41 PM »
It's the thread pitch.  Just like a 6 - 32 screw.  Six is the size and the 32 are the threads per inch.

44caliberkid

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Re: Nipple sizes
« Reply #2 on: September 20, 2009, 06:03:32 PM »
Thanks.  That's what I suspected, so it's .75 threads per millimeter?

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Re: Nipple sizes
« Reply #3 on: Today at 11:34:45 AM »

Offline Montana Slim

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Re: Nipple sizes
« Reply #3 on: September 20, 2009, 09:38:42 PM »
Thanks.  That's what I suspected, so it's .75 threads per millimeter?

Yup, that is correct.

If you need a metric set of taps for chasing one or more of these, you'll find a serviceable set for chasing them for about $13 at Harbor Freight. I recently bought a set to fix a 6x.75 (Pietta) tapped hole for this very purpose.

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