Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HUB-334 found under Pulley Groove by Curtiss Wright Electro Mechanical Corporation Div Steam And Air Solutions. The National Stock Number assigned to this part is 3020013057358, 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 HUB-334.