Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GK42 found under Gasket by Amfs American Fleet Services. The National Stock Number assigned to this part is 5330010542393, 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 GK42.