Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 7421SS 3 4T SS found under Bail Retaining by Spraying Systems Co. The National Stock Number assigned to this part is 5340015236923, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 7421SS 3 4T SS.