Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R7040AF found under Gear Worm Wheel by Cleveland Gear Company Inc. The National Stock Number assigned to this part is 3020012905039, 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 R7040AF.