Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number Y28917 43 1 found under Spacer Sleeve by Lord Corporation. The National Stock Number assigned to this part is 5365016419166, 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 Y28917 43 1.