If you can't find one, you could always use a flanged bushing. Other nomenclature would include hat bushing, hat spacer, flanged spacer. Click the link below and measure the remaining one and get the closest one for your needs. If the closest one is too long, grind it down. Hole too small drill it out, etc. Click metric in the l/h top corner, that will get you to something that should work. Good luck.
https://www.mcmaster.com/flange-spacers