(4-Pack) Zinc Plated Carbon Steel 5/8” Bore Shaft Collars Sets - Screw Style Bore Shaft Collars with 5/8” Bore Size, 1-1/8 Outer Diameter, and 1/2 Width - Suitable for Automotive and Industrial Use

Ive probably bought over 100 of these collars for my mini bike, go kart and trike builds. Add a small amount of lock tight and they never move.

I saw some reviews that said these run small, but I found them perfectly sized. They were so accurately sized that I had to lightly sand some burrs off of the shaft to get them on. Locked down tightly once in place. Very pleased with these.

Received but 4 of the 8 are missing their set screws.

Was just what I expected nothing more & nothing less.

Good Buy

If you are An idiot like me you should probably read the entire description because it’s not an internal bore of 5/8” however this is an solid item and is Sturdy. not five stars because I’m an idiot and I accept it and also because the product description

Product went on easy. Will see if they stay in place.

Worked for what I needed

The ones I got were smaller than 5/8, by 1/32-1/16. Luckily I had a 5/8 drill bit and a drill press with a vise. I was able to bore them out so I could use them, but if youre not that lucky, beware, these are smaller than 5/8. I used a micrometer on the axle shaft i was using, and it came out exactly 5/8 and these would barely get on the ends. It took me 20 minutes to try and get the first one back off. The 5/8 drill bit shaved off quite a bit of metal to get them to work.

Too big