Yamaha French Horn, Tuba, YHR-667 type, YBB-641(2) Lever Support Shaft Nut

Yamaha French Horn, YHR-667 type, YBB-641(2), & others, lever support shaft nut P/N E1841240. Specifically, for YHR-667, 668, 764, 871 & others.  Contact me if you wish to verify your model's fit or you need other parts.