Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A18 70780 found under Spacer Ring by Messier Bugatti Dowty. The National Stock Number assigned to this part is 5365142161024, 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 A18 70780.