Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D1-020873 PIECE 63 found under Shim by Western Sky Industries Inc. The National Stock Number assigned to this part is 5365013816555, 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 D1-020873 PIECE 63.