If you bought Low Profile High Strength Clamping Shaft Collar - 276-7580
get ready to have your patience tested. The insert screw for the collar “strips out” extremely easy. Which is really nice in the middle of a build and you are not able to remove the collar. Which usually means you will have to disassembly the mechanism you are working on to get at the problem.
We bought our first batch and within (1) practice session we had two striped out collars . Sure blame it on the kids overtightening the screws, but in reality the screws are no where near the durability needed to withstand kids working on projects.
My advice, stick with the old ones: 276-6102…that is, if you can find them…hello resellers.
Looking forward to discussions where some enterprising individuals remove the cheap screw insert and drill out the screw opening to allow a better locking option.