Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S166D1032 10 found under Spacer Sleeve by Alcoa Fastening Systems Ltd. The National Stock Number assigned to this part is 5365008557834, 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 S166D1032 10.