SAE Flare Wrench sizes for 1967 Brake work

[DAC21]

Just prepping for the resto. I read Flare Wrenches come highly recommended for Brake work. Are there any nuts / fittings less than 3/8"? The three wrench sets I'm looking at start at 3/8 going to 11/16. Do 1/4 inch or 5/16 come into play on these cars?

Thanks

[dynaguy]

7/16 is the size I have used. FWIW Pat

[DAC21]

7/16 is the size I have used. FWIW Pat

Thanks Pat

[C.Costine]

Chances are good that you will be replacing all of the brake lines. You can get a kit of pre-bent stainless steel lines with the fittings already on them or get the highly recommended nickel-copper line as I did which will come with plenty of fittings. I am pretty sure that the fittings are 7/16. A crowfoot wrench is very handy for getting old flare fittings apart when you plan to reuse them, but since that is really unlikely, I suggest that you hold off on getting special wrenches until you know that you will use them.

[theunz]

A set of flare wrenches is pretty inexpensive and will come in handy for other projects. I never (well, ever since I rounded off enough flair fittings in my younger days) approach a flair fitting without one. Pat is right, I don’t recall anything less than 7/16. If for some chance you ever need a size that’s not in your set then just buy it individually.

[spl310]

DO NOT BUY CHEAP FLARE NUT WRENCHES!!! Buy the best that you can find. The cheap ones spread open and screw things up.

[theunz]

True of any type of cheap wrench, particularly the smaller sizes.