Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C5A27157 found under Gear Spur by Speco Corp. The National Stock Number assigned to this part is 3020001796873, 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 C5A27157.