Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A4003AF27 found under Gear Worm by Cleveland Gear Company Inc. The National Stock Number assigned to this part is 3020012927941, 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 A4003AF27.