Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S9713A-Z2H110AR found under Gear Antibacklash S by Designatronics Incorporated. The National Stock Number assigned to this part is 3020010308630, and the Federal Supply Class is 3020 Gear Pulley Sprocket And Transmission Chain. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like S9713A-Z2H110AR.