Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NAS77A9-043 found under Bushing Sleeve by Master Machine Products Corp. The National Stock Number assigned to this part is 5365016296152, 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 NAS77A9-043.