Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number YD2018-1054REV7 found under Gear Spur by Raytheon Technical Services Company. The National Stock Number assigned to this part is 3020002043007, 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 YD2018-1054REV7.