Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 816001-000 found under Bearing Assy Re by Armstrong Pumps Inc. The National Stock Number assigned to this part is 3120012579016, 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 816001-000.