I looked for longer than stock 7mm cap screw for several hours and never found them. I needed them to try to grab the last few threads in the clamp after the close threads galled, bound up and stripped. (FYI- it is a great idea to put anti-seize on these threads so they don't gall.) I found longer 7mm hex head screws and added a 1/4 in steel tube spacer so the hex head was outside the recessed hole and the spacer was able to fit inside the recessed hole and put pressure on the flat contact point.
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