2000 f250 brake line fittings size??

[Huse]

Hi I just bought a new truck and need to replace the brake line on the frame rail behind the tank due to rust.

My question is as follows: What type and what thread size do I need for brake line fittings?
It seems like there are different size fittings on each end of the brake line (the connection to brake hose to rear axle, and the joint in the brake line just beside the joints for the fuel lines. (I might have been thrown off by the different size nut on the brake hose connection to the rear axle and the forward brake line joint).

Thanx

[Huse]

Ended up re-using the old ones, had to drill out the old brake line from the fittings