Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 82973A found under Bearing Hopper Shaft by Rexnord Holdings Inc. The National Stock Number assigned to this part is 3120001142041, 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 82973A.