What is the external dimensions of the original nut, the wrench size? Would it be possible to find nuts with the correct exterior dimensions and drill and tap them for the bridge saddle screw threads?
Nope Nope Nope...it's NOT a Nylock Njut...Its a small white piece of plastic inside at the bottom of the hole to stop the 6/32" screw from going any further. That is so Once the screw goes through the rear of the bridge, it then threads through the saddle and then back through the bridge, ending with the hex cap nut. you tighten the nut and if correct, you should be able to freely adjust the saddle back or forward. It's NOT a nylock with a Nylon washer along the thread. Its a tiny spacer as described. I will TRY to remove one of mine....they all have locktite on them