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Brake union nuts

Posted: Sun May 31, 2026 2:39 pm
by Nax
Wheel bearing sorted thanks.
Just fitting the new front brake hose when I noticed the nut on the brake pipe has a split in it Pic attached below.
I have a flaring tool so I'm hoping I can put a new nut on the pipe and re do the flare.
Can someone tell me what nut I need to order from ESM?

Re: Brake union nuts

Posted: Sun May 31, 2026 3:19 pm
by Bill_qaz
If you use the search facility at the top of the page you can usually find a topic to answer your questions such as this.

viewtopic.php?p=631381&hilit=Brake+pipe+thread#p631381

Re: Brake union nuts

Posted: Sun May 31, 2026 3:33 pm
by Nax
Thanks but I Cant find the answer in that link

Re: Brake union nuts

Posted: Sun May 31, 2026 3:42 pm
by Bill_qaz
Its on the diagram
Or you can talk to ESM for confirmation, they are very helpful :tu1:

Re: Brake union nuts

Posted: Sun May 31, 2026 4:09 pm
by Mervin
3/8" UNF for the front flexible. Shown on the linked drawing.
As Bill suggests, I would contact ESM. I think both front and rear are 3/8" UNF depending on year.
Do you have a 3/8" UNF bolt to carefully screw into the pipe end to check?

Re: Brake union nuts

Posted: Sun May 31, 2026 4:41 pm
by Bill_qaz
Mervin wrote: Sun May 31, 2026 4:09 pm 3/8" UNF for the front flexible. Shown on the linked drawing.
As Bill suggests, I would contact ESM. I think both front and rear are 3/8" UNF depending on year.
Do you have a 3/8" UNF bolt to carefully screw into the pipe end to check?
Or a 3/8 UNF nut to try on your pipe nut :tu1:

Re: Brake union nuts

Posted: Sun May 31, 2026 6:52 pm
by Nax
Yes I will contact Esm as they supplied the the hoses
Thanks for your help

Re: Brake union nuts

Posted: Mon Jun 01, 2026 10:42 am
by Mervin
"Or a 3/8 UNF nut to try on your pipe nut :tu1:"
Why didn't I think of that too. :roll: :-?

Re: Brake union nuts

Posted: Mon Jun 01, 2026 1:13 pm
by Bill_qaz
Mervin wrote: Mon Jun 01, 2026 10:42 am "Or a 3/8 UNF nut to try on your pipe nut :tu1:"
Why didn't I think of that too. :roll: :-?
Depends whether you're an inny or outy person :lol: :tu1: