Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 505590-001 found under Bearing Washer Thrust by Smith Meter Inc. The National Stock Number assigned to this part is 3120013284292, 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 505590-001.