Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A19-1252W found under Sprocket Wheel by Barber Greene Co. The National Stock Number assigned to this part is 3020008657316, 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 A19-1252W.