Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A10256 found under Gasket Spiral Wound by Teikoku Usa Inc. The National Stock Number assigned to this part is 5330007997148, 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 A10256.