Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 17780 ITEM 5 found under Gear Bevel by Elliott Company. The National Stock Number assigned to this part is 3020014149258, 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 17780 ITEM 5.