Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number T3015 found under Gear Spur by The Biro Manufacturing Company. The National Stock Number assigned to this part is 3020011853948, 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 T3015.