Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 431384 ITEM 70 found under Bearing Washer Thrust by Western Filter A Division Of. The National Stock Number assigned to this part is 3120007406446, 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 431384 ITEM 70.