Need some help repairing brake line above fuel tank on CB7.

[Corrosion]

So far based on my research.

The best material to use for the line is Nickel copper. Because it doesnt rust. But I have heard it's not easy to bend.

Just to confirm the size that the brake line is
3/16, is that the correct size?

And I need to make and copy the one I cut out that uses a double flare on both ends?

I'm just wondering if anyone has replaced this line before. And if they know the correct sizes off hand.

And also the tube nut that fits on each end the size is m10 x 1.0? Is that correct as well?

On each they both need a female and male connector of that tube nut? And they have to be put on before I make the double flare? If I assume correctly?

Refer to the picture where the leak is located. I want to know if I can make this simple as possible and just make a straight shot? Because the leak is on the passenger side of the car. But on driver's side I want to replace because eventually it's probably going to leak on that side as well.

I want to make a straight shot between the two red lines. I'm assuming that it wont hit the fuel tank. I'm not sure. If I use those clamps like those 3 that show you, so it doesn't touch it? I'm assuming it will be okay? Or do I have to really make it more complicated than that? And I have to bend it? Has anyone done this brake line above the fuel tank before? Any advice would be appreciated.

[Cassandra]

ive not got experience with this line, but you could use a cheap caliper from harbor freight to check the OD of the existing line, this is what google told me the measurements should be:

If you have a caliper you can measure them, 3/16" is .1875", and 4.75mm is the same. 4.75mm is the metric equivalent of 3/16"

[Corrosion]

ive not got experience with this line, but you could use a cheap caliper from harbor freight to check the OD of the existing line, this is what google told me the measurements should be:

If you have a caliper you can measure them, 3/16" is .1875", and 4.75mm is the same. 4.75mm is the metric equivalent of 3/16"

Alright, I will check harbor freight and buy one to make sure it is the correct size. There is another question I have. About the tube nuts. Should I use male and female connectors? Or should I use two male connectors with a union connection? Because when I try to find tube nuts to buy. They usually come in set of two. It's only two male tube nuts. Although, I did find some female connectors. I do not know if they match with the m10 x 1.0 size threading. Refer to the picture. Can I just buy two male connectors with a union connection. Is that a better connection? It seems easier to find them with a set. Refer to the picture. Which is better?

[ukemike]

I think brake lines need to be flared and use flared tube connectors. Harbor freight has a tube flaring tool too. They also have a tubing bender that works really well. I'd replace the whole section that looks corroded.