Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 40TB35 And 1610X1 found under Sprocket Wheel by Emerson Electric Co. The National Stock Number assigned to this part is 3020014176194, 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 40TB35 And 1610X1.