On Sun, 18 Aug 2019 19:11:49 -0700 (PDT), AK
wrote:

On Sunday, August 18, 2019 at 8:25:40 PM UTC-5, John B. Slocomb wrote:
On Sun, 18 Aug 2019 17:35:54 -0700 (PDT), AK
wrote:



The opening in the hex screw that holds the rear brake cable has become much looser than it used to be. What is the name of the part so I can order another one? (Hopefully they have some made of harder steel.)

https://imgur.com/a/JT76Qog

It is simply a clamp bolt and the question is whether it holds the
brake cable tightly when it is tightened, If it does than I shouldn't
worry about it.

As the bolt should be clamping the cable between a flange or washer on
the bolt and the brake arm itself. When it is tightened it shouldn't
move at all.

Your picture looks a bit strange, but maybe it is the perspective. See
https://sheldonbrown.com/canti-direct.htmlto
from a slightly different angle.
--

Cheers,

John B.

If that clamp bolt gets enlarged much more so my hex wrench slips, it will definitely be a big problem.

How will the bolt become enlarged so that the wrench slips?That seems
to be a contradiction in terms?
Perhaps some more photos would be helpful.

Ah, I think I have it. Your "Allen" wrench doesn't fit well and is
enlarging the internal wrenching head of the bolt. Not much you can do
about that except get a new bolt and the correct size wench.

In the interim have a look at
https://www.bikeride.com/adjust-v-brakes/
http://www.holliseaster.com/p/adjust-bike-brakes/
https://sheldonbrown.com/canti-direct.htmlto
--

Cheers,

John B.