So i was trying to replace the arms on my v brakes and i ran into an odd snag. The thread that the pivot bolt screws into on the bike is actually also a bolt with threads on its inside and out by the looks of it.
This was news for me, but the problem is they are inseparably fused together on the one side somehow, try as i may. Does anyone know what this bolt is called or where to get a replacement so i can put on my new brake arm?


Thanks from a newbie bicyclist.

Are you perhaps looking a removable canti studs similar to these?

Hmm could be, ill have to take it apart again next weekend for a second look. Thanks for the lead ill check it out. I just had no clue where to start.

If you do need new stud(s) be aware that they come in at least 3 different threadings on the fork end, that I know of; M10 X 1, M10 X 1.25, and M8 X 1.25.

so instead of unscrewing the bolt to remove just the brake arm, the post itself is coming out of the frame?

Yes exactly. And hell itself cannot seperate them to screw the post back in.

May have to buy a replacement post, then a new pair of the same brake, for the one you need.

Or, Per haps the LBS can separate the pieces for you? have you asked them?

It's been a week and you still don't have it apart?

You can grab the exposed end with a pair of vise-grips, or any decent pliers, or even hold it in a vice but that risks dinging the threads. Minor ding's aren't an issue so you might give that a shot. Or you might wrap the thread to try to protect it, but that reduces grip strength.

If it's stubborn and you don't want to ding it, take it to the hardware store and buy a nut to match. Stand the nut in a vise corner up, and saw it halfway through. Thread it on the stud and you can now clamp it in vise for a secure grip that won't damage the threads.

FB, never heard of that trick. Thanks!!!