Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 6863603 found under Spacer Shaftgear by Rollsroyce Airlines. The National Stock Number assigned to this part is 5365008834983, and the Federal Supply Class is 5365 Bushings Rings Shims And Spacers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 6863603.