NPT to AN Converision Chart

[camcojb]

Originally Posted by B Schein

The AN size to fractional size have been posted but in case you don't want to memerize them it works in 16ths

example -6 is 6/16=3/8

http://www.bmrs.net/ti-6.htm

just realize that with the common braided steel over rubber line they actually come out smaller than this. I think in teflon lined hose it's probably more accurate. For example, #8 braided line is closer to 3/8" id than it is to 1/2" id. #6 is closer to 5/16" id, and so on.

Jody

[B Schein]

Originally Posted by camcojb

just realize that with the common braided steel over rubber line they actually come out smaller than this. I think in teflon lined hose it's probably more accurate. For example, #8 braided line is closer to 3/8" id than it is to 1/2" id. #6 is closer to 5/16" id, and so on.

Jody

The standard it does not specify inside diameters do to varying wall thickness. The sizing system works off OD.
http://en.wikipedia.org/wiki/AN_fitting

[camcojb]

Originally Posted by B Schein

The standard it does not specify inside diameters do to varying wall thickness. The sizing system works off OD.
http://en.wikipedia.org/wiki/AN_fitting

exactly. I know you're aware of this but my post was for those who weren't. If they have a 3/8" steel barb and wanted to add some braided line to it to go to the carb for example, by that chart they'd buy #6 and it would be almost impossible to get it on the barb, id too small. #8 would be the correct choice. Just trying to save someone from buying the wrong stuff.

Jody

[B Schein]

I got you this can be very confusing to those who don't know how it works. I have been fortunate enough be work closely with Brown and Miller Racing Solutions BMRS. They supply most of the hoses used in nascar as well as the American la Mans series. They have always strengthen me out and explain how things should work when I get confused.