I need to make 4 thin wall steel bushings out of hardened steel. The ID is just over 1.5", the OD is ~1.685", and the length is 1". Since the OD is an odd size, I believe I'll have to make them myself. My problem is that I don't have a heat treating furnace so I'm trying to find heat treated tubing that I can cut/machine to spec. Anyone know of an online supplier that would have this type of material and would be willing to sell it in such small quantities? Any other suggestions would be also appreciated.