Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M00-5590-G1 8 ITEM 15 found under Bearing Washer Thrust by Mastergear Corp. The National Stock Number assigned to this part is 3120013368845, 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 M00-5590-G1 8 ITEM 15.