Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C3856 found under Packing Material by Schwitzer Engine Components. The National Stock Number assigned to this part is 5330002023266, 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 C3856.