First time poster, so hello everyone! Expect to see me often as I'm building a 96 Accord I just bought.

On to my question, I got stranded 500 miles from home when my clutch stopped returning, found it to be my master cylinder (leaking all over my carpet) & further more when removing it found the nut to the line to be entirely rounded off, not even my flare nut wrench could budge it, so I was forced to cut the line and splice it. Problem is, I can't seem to find that nut anywhere. Its 1/4" diameter tubing.

Car is a 1996 Honda Accord EX Sedan 2.2l 4cyl VTEC F22b1.
Anyone know where I can get this nut to fabricate a new line?

 

Your best bet is to replace the entire line, they are still available.

Clutch line

 

I would not replace the entire line. If you take the fitting out and bring it to a parts store they will size it for you. For line replacement/splice I like to use a copper/nickel blend 3/16 tubbing, bubble flare it and move on... It may look like 1/4 but Honda has never used that dia. on any clutch line I have ever worked on. Assuming you live in the U.S.

 

I've used a small vise grip on flair nuts on a fuel line that had rounded nuts.

 

I disagree with turtlehead on this one. For ~$35 you can replace the line with a new part and not have to worry about splicing.