Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R354440-16 found under Gear Spur by Raytheon Company. The National Stock Number assigned to this part is 3020008362699, 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 R354440-16.