Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 604390 found under Bearing Roller Thrust by Allis Chalmers Corp. The National Stock Number assigned to this part is 3110001170758, and the Federal Supply Class is 3110 Bearings Antifriction Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 604390.