Where to get bolts for KH disc brakes?

You are going to have to find them from someone that might have some used ones to sell to you.
Original bolts are not available anywhere.
Since i rebuild these brakes as part of my business, i looked into getting these bolts, and the caliper hose mounting brackets reproduced.
It's just too cost prohibitive having someting like that done.
The machine shop gave me a quote of $10.75 per bolt, X 100 bolts. Thats $1,075.00 for bolts.
I would probably have to sell bolts at $20.00 each, by the time i paid to advertise them.
Just not worth it for such a limited market, demand, for something like that.
Nobody would be willing to pay that kind of price.
Good luck searching for them. I have a hard time coming up with them when i find disc brake set up's missing those items.