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Old 02-10-2009, 06:35 PM   #1
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Default Need quick Help - identify this AN Fitting Size

I have some -AN fittings, but i'm not sure what size it is. I measured the Major Diameter of the threads with a set of calipers and it's 0.75 inch.

I searched google, but i can't find any good schematics.

Is this -AN 8 or -AN 10?

Here is a picture of a fitting, and what I measured. It's not the actual one I have.
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Need quick Help - identify this AN Fitting Size-airkewld_482a.jpg  
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Old 02-10-2009, 06:55 PM   #2
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Old 02-10-2009, 07:01 PM   #3
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Hey ben, thanks for the link, but It doesn't give any dimensions of the threads. I have that fitting on an oil cooler, and i''m trying to figure out what hose end to buy.
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Old 02-10-2009, 07:07 PM   #4
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12/16 = .75

therefore -12AN
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Old 02-10-2009, 07:25 PM   #5
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I may look like an idiot here but that sounds like an -8 to me, all my stuff is 8 or 6 and that seems about the size of an 8. what is it on?? or for??? I also believe you measure AN fittings to the inside diameter, not the thread size.

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Old 02-10-2009, 07:25 PM   #6
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AN is ID not OD. Measure the ID of the fitting. Then if it measured .75ID it would be 12/16" = .75 = -12AN.
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Old 02-10-2009, 07:32 PM   #7
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Quote:
Originally Posted by Braineack View Post
12/16 = .75

therefore -12AN
i always thought that the an number stands for hose diameter. The fittings always looks bigger in diameter.

i just found this site here.

Plumbing Products

according to the chart

-AN 8 has a thread size of 3/4-16 SAE
-AN 10 has a thread size of 7/8-14 SAE
-AN 12 has a thread size of 1 1/16-12 SAE

For that thread size nomenclature, is that first number the major diameter of the thread?
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Old 02-10-2009, 07:38 PM   #8
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also JIC and AN are the same but you can get JIC in brass and steel.
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Old 02-10-2009, 07:52 PM   #9
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Quote:
Originally Posted by rippledabs View Post
For that thread size nomenclature, is that first number the major diameter of the thread?
Yes. Major diameter-thread pitch is the standard way of expressing straight cut threads.
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