Brake block/fuel line clamp bolt finishes

[Michael H.]

What is the correct finish on the bolts that secure the fuel line clamps to the right frame rail for a '65? Also, what is the correct finish on the bolt securing the 4-way brake block to the left front frame? The repro bolts I obtained from a leading supplier are zinc plated, but I have seen some suggestion in the Archives here that both bolts should be black phosphate. I can't seem to find any reference to these finishes in the JG. Thanks.

[Michael H.]

Re: Brake block/fuel line clamp bolt finishes

Answered one of my own questions--I now see the reference to the black phosphate recessed hex-head bolts attaching fuel line (on page 151 of JG). How about the brake block bolt finish? Thanks again.