Climax Metal C-100 Shaft Collar, Zinc Plated Steel, Set Screw Style, One Piece, 1 Bore, 1-1/2 OD, 5/8 Wide, With 5/16-18 Set Screw

Good fit

This is a well-made product at a great price and fits my motor shaft perfectly.

These things are the best standard barbell collars that I have ever come across. They keep the weight extremely tight to the bar. The only issue is that there is a great deal of variation in the the diameter of standard barbells…so check first before ordering.

These are great BUT, they are 5/16 24 and NOT 5/16 18.

Work great

Perfect for project

Set screw is NOT 5/16-18, its 5/16-24... at least the one they sent me. Probably doesnt matter to many, but I planned to replace the set screw with a threaded knob, so my project is now delayed while I either find a replacement or tap a new hole in this one.

Overall is best value for what you pay. It does the job holding the rear axle in place on my vintage quarter midget. I wouldnt install it for more for racing or something that needs more durability. But it gets the job done. Its also slightly bigger than the measurement than for the size I ordered.

Low price for a quality part. As advertised. I am buying more.

Great collars, using them on old/ smooth standard 1 inch dumbbell handles.