AN fitting sizing w/ Tool Gloat

[justinking060310]

Last time I was at the speed shop trying to size a fitting in order to purchase an AN fitting they measured it with a caliper and told me what size it is -

Can someone tell me how to convert this?
I googled it and did not find anything helpful.

For a male fitting (IE i need a female fitting for it)
outside 13.85 mm or .545 in or 35/64"
inside 7.35 mm or .2875 in or 19/64"

For a Female fitting (IE I need a male fitting for it)
outside 18.90mm or .745 in or 3/4"
inside 14.50 mm or .570 in or 9/16"

For anyone who wants to know this is Toyota 4Runner Transmission cooler line.

I would like to know how to do this for future reference as well. Maybe there is a chart somewhere with corresponding sizes?

What about thread pitches?

Justin


TOOL GLOAT - I got one of these 6" calipers that reads MM, IN, and Fractions from chipsfly.com

 

[russlaferrera]

Multiply 25.4 X inch/thousands = mm divide MM by 25.4 = inch/thousands

25.4 X .3937= 9.99998 or 10mm 10 ./. 25.4 = .3937

You need to get a listing of fitting sizes and convert them to inch or MM depending on the size IE: .375 is 3/8 would not be a 9.5 mm fitting If you know it is MM than use the MM measurements . What ever is closest to it is what it is. IE: 2, 2.5,3,4,5,6,8,10,12,14,16,18, mm and bigger.

Thread pitch is the basic fine/course.

Hope this helps

 

[justinking060310]

do you base this on the inside measurement?

Im estimating that if you need a male fitting then you would measure inside

and

If you need a female fitting you measure the outside...

Thanks so much for the help by the way

 

[justinking060310]

am i making this harder than it is? can i just take the fraction that my caliper gives me - like in my first post where i said that the male fitting is an OD of 35/64... would this be an -08 AN since (if i understand correctly) this is a 1/2" (well 8/16") male fitting?

If thats the case, how far do you round I mean 35/64 is pretty close to 32/64 but how far is too far?

Thanks for helping this confused individual.

Justin
Semper Fi

 

[Charles (in GA)]

True AN fittings are known by tube sizes. A #4 is a 1/4" OD tube, a #6 is 3/8" OD tube, the number is in 1/16ths of an inch, so a #4 is 4/16" or 2/8" or 1/4", thats how it works.

A #4 "B" nut uses a 9/16" wrench, and a #6 "B" nut uses an 11/16" wrench.

Charles

 

[justinking060310]

so charles, would you say my math looks right?

 

[1320stang]

I'd go by what size wrench fits it, as opposed to a caliper.

 

[russlaferrera]

Google AN fittings, look for Speedway Motors Race AN fittings. Click on Fitting size chart. There is a simple chart that may be what you are looking for.

I tried to set the link up but the ...it's me.

 

[EdNJ]

Google AN fittings, look for Speedway Motors Race AN fittings. Click on Fitting size chart. There is a simple chart that may be what you are looking for.

I tried to set the link up but the ...it's me.

Justin,I think your 4Runner uses metric flare fittings,not AN. Are replacing the stock hard line with a stainless braided hose?

 

[justinking060310]

that is my intent yes -- I have always had bad luck with oil and ****** lines either seeping or bulging then bursting.

 

[russlaferrera]

Justin,I think your 4Runner uses metric flare fittings,not AN. Are replacing the stock hard line with a stainless braided hose?

Ok Ok you showed me up. Now where is my missing sock in the washing machine? Ya know you are probably one of those guys the toast alway falls butter side UP....thank you...russ