Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 503054 found under Bearing Thrust by Holset Engineering Co Ltd. The National Stock Number assigned to this part is 3120997820886, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 503054.