trans cooler lines size

Guys Looking for some information please,

I'm wanting to make my own trans cooler lines on my 64 Dodge can anyone confirm the size of the lines & where I can purchase the unions for the ends please.

thanks Billy

the cooler lines are 5/16" and the nuts/fittings should be common parts store items.

thank you

I'm not too sure the Female inverted flare nuts are going to be available at the local parts house. most around here don't carry a lot fitting wise

Usually compression fitting union nuts will work fine.

My local Ace has been real good in stocking fittings

thanks everyone for the replies

much appreciated.

rgds Billy

They are 5/16 outside diameter close to 1/4 inside diameter.
# 4 or 5 AN should work well also