Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number H9000-173 found under Gear Spur by Ametek Inc. The National Stock Number assigned to this part is 3020016137216, 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 H9000-173.