Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SCD20865B found under Gasket by Couch S H Co. The National Stock Number assigned to this part is 5330003929156, and the Federal Supply Class is 5330 Packing And Gasket Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SCD20865B.