distributor nylon shaft collar where to buy??

Yep, thats what i used. Screw that nylon collar. Was a bean counters dream. Prob cost chrysler $5 for a couple thousand of those back in the day. File a flat spot on the distributor shaft for the set screw, and dont forget to loctite the set screw on installation with red loctite. I also made a gapping shim out of .010" stainless steel shim stock with a U shaped slot in it to slide between the thrust washer and collar when tightening to keep the collar square and prevent it from cocking off to the side when tightened. When done, remove the gapping shim. I think i payed .75 cents each for the metal collars w set screws.