Richard D
Well-known member
Looking for some large steel washers or discs, 3/16 or thicker, 6-1/2" O.D. or slightly larger. I.D. not important.
Now watch someone refer me to McMaster-Carr page 11,753....


find a machine shop...get some 6 1/2" bar bore it and part off the thickness you want.
When I was in an engineering design class in college my group had a need for a similar part for a project. One of the other guys was into dirt track racing and had a catalog with a good variety of rings with different sized OD, ID and thickness. I thought maybe it came from JEGS but nothing is jumping off their website at me.
I have ordered some weld-on tabs from them, but I can't remember their name. I have a catalog around here somewhere.
I have some big heavy truck brake drums. I want to bolt on a washer that I will drill holes in. Then I weld a piece of pipe to that and mount a bench grinder
Looking for some large steel washers or discs, 3/16 or thicker, 6-1/2" O.D. or slightly larger. I.D. not important.
Could be these guys: https://www.aa-mfg.com/
The part you seek already sits on shelves! Search for a "wheel spacer" an you should be able to find one with the 6 1/2" OD with the holes already drilled. You may be able to find the exact holes to match your drum or there are also multi-fit versions available like this one:
![]()
These would be typically sized for an axle tube, so if you want your tube to be smaller, you may need to find a place that custom fabricates these.
These drums are huge, bigger than an 18 wheeler drum I believe. The 5/16 bolts on top, are a 5 1/2" bolt circle. That is what I will bolt my plates to, and weld pipe to that.
