Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NAS43DD3-40 found under Spacer Sleeve by Anixter Industrial. The National Stock Number assigned to this part is 5365008082527, 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 NAS43DD3-40.