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I'm trying to gather parts to do a disc brake swap on the rear of my Jeep. I just bought the calipers, pads and rotors. I was going to get hoses and banjo bolts, but I'm having a problem figuring out what size banjo bolt I need. I tried both a 10mm and a 7/16". The 10mm is too small. The 7/16" starts in the hole, but it stops as soon as it starts to thread in. Does it take the 7/16", but it is tight because of them being rebuilt or what? When I looked up the calipers I speced a '78 Chevy K20. What size banjo bolt should I need?
 

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I just picked up some calipers from the wrecking yard today. all the stuff I pulled took the 7/16 (head) bolt...Best thing I would do is try the same vintage used caliper and see if they match, if you happen to be in boise sometime, I have a bunch of calipers and banjo bolts laying around. If it was 70's it should be standard thread, but even the 80's 3/4 tons with the bigger piston that I use, take the same banjo.
 
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