Jeep Folks and Good Mechanics, got a different question...?

not as dumbazzed as you thinking it could be a metric thread on a standard nut.

Go to parts store, bring the old one, correct it sameday, or do not enter traffic since you attempt to make faulty equipment by the standard of the law and insurance liability.

Get someone to drive their car and pick her up while you correct it properly.

If you cannot get the like repair accomplished, or buy easy install parts there, a hydraulic line repair shop or brake shop can assist you.

Seen it many times, But had to match parts up, transfer nut over and or adjust length and reflare double flare or ISO flare.

The u-pull-it yard is another idea if you are a beap chastard.

The REAL old hillbilly/redneck trick is to git yerself a small nail and stick it in the busted lines fitting. Then put the fitting back. No need to ask opinionated know-not-much folk.

Good lord. I suspect you are joking, but if not, you clearly don't know what you are doing. For pete's sake take the truck to someone who does before you kill somebody.

Are you SURE he gots to get to work?