Hey Guys, hope everyone's having a great Saturday. Quick question, is there a book or manual explaining the basics of AN fittings and plumbing. For instance, what AN measurement would correspond to a 3/8" diameter fuel line? Sorry if politically incorrect, but it's all Chinese to me. I'm guessing it was originally used in aviation (Aeroquip). Your help will be greatly appreciated.

JR

For anyone with a modified engine that did their own plumbing using these fittings.....Any input at all. Are there any pitfalls during the installation I should watch out for? Trial-and-error might end up costing me quite a bit here.

--Calling all Hot-Shot mechanics....Ken, Daveb12, lumberjack John, anybody. HEEEELP!!!!! (LOL)

JR

Howdy, JR. Sorry for not posting this yesterday . . . I was uncontrollably distracted by the PERFECT T-top weather.

"AN" is not ringing any bells here.
I have a dandy litle book entitled "The Pocket Ref." If "AN" is a unit of measure, that little $7.00 400-page information jewel will more than likely have it AND its conversion factor(s). Unfortunatley, that book is sitting on my desk . . . in my office . . . twenty-six miles from home.

I will check on it tomorrow and let you know what I find. Wish I could do better for ya'. Although, I'm betting one of the wise men will come through on this before then.

John

URGENT UPDATE: MAY HAVE ANSWER! CHECK THIS ONE!
http://www.onlineconversion.com

|UPDATED|4/25/2004 6:10:15 AM (AZT)|/UPDATED|

I know the AN exists. I know there is a coversion out there. But I have never used it. In the auto world we always use the spec you are converting from.
Sorry, this time I'm no help.
You may try SAE, Society of Automotive Engineers.

A.N. stands for Army/Navy.
It's basically a standardizing system for hydraulic fittings. The fittings have around a 37 degree taper that eliminates the need for sealing compound or tape.


Hose size: 1/4"- (With a I.D.of 1/8") = #4A.N.
3/8"- (With a I.D of 1/4") = #6A.N.
1/2"- (With a I.D of 3/8") = #8A.N.

This is the general sizing. Some other manufactures may list for example a #4 hose with a I.D. of .22" which is very close to 1/4" or .25"


Hope this helps
Sarge

BINGO, Sarge, now it's beginning to make more sense. Thanks for the neat little hose size table you formulated, that suits my needs perfectly. I guess now I need to buy those funny-looking, multi-colored wrenches to keep from over-torquing these aluminum fittings. Thanks a bunch.

JR

P.S. Thanks for your replies Ken and Big John, this just proves what a caring group we have.

Correct Army/Navy.

Go here for your technical information.

www.earlsplumbing.com

Click on the technical section.

AN is the only way to go when doing custom plumbing.

I should've known that....silly me. Earl's or Russell. Thanks!

JR