Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FB-615 WITH 1.250 BORE found under Sprocket Wheel by Emerson Power Transmission Corpo. The National Stock Number assigned to this part is 3020005292941, 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 FB-615 WITH 1.250 BORE.