Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A3673H1893 found under Gear Drive Motion by Ohio Industries Inc. The National Stock Number assigned to this part is 3020003678138, 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 A3673H1893.