Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number Z4D105AP1 found under Gear Antibacklash S by Designatronics Incorporated. The National Stock Number assigned to this part is 3020004319288, 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 Z4D105AP1.