Brake lines

[Vetteguy22]

So I’m at the point where I need to redo the hard brake lines on my 1971 Datsun 510. I’m not really that familiar with Datsuns but am learning. What size brake lines are used on these cars? They appear to be approximately 3/16” but not sure if it’s actually metric. Also what size fittings? Looks like all the ends are double flares but I know some of the new foreign cars are using metric bubble flares. Are any of these used on our older cars.
Any help would be appreciated.
Thanks,
Rob

[Charlie69]

I know the Datsun Nissan trucks use a 10mm x 1 inverted flare fittings. I imagine the cars are the same. The early Datsun trucks 521 and earlier shipped to the USA Used SAE threads on everything except the engines and transmissions. 620s were the first all metric Datsuns shipped to the US.

You can purchase 10mm x 1 fittings that fit the 3/16" steel line which makes it easier than sourcing metric line.

[Ryanotown22]

I used this for the 280z I bought it in the size closest to what I needed and hand bent it comes with the fittings already on it so you don’t have to worry about flaring it etc
https://shop.advanceautoparts.com/p/pol ... 22190030-P

[Vetteguy22]

Thanks Ryan but I have a really nice bender and flaring tools. I finished up the brake lines a while back and have bled them with no problems. Recently finished the paint, cut and polish and am starting to reassemble now.

[Randalla]

Pictures Rob. Anxious to see your progress.

[Vetteguy22]

I really suck at figuring out how to post pics.
Maybe you can help me figure it out.
Thanks,
Rob