Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AS55838 found under Bearing Ball Annular by Chicago Pneumatic Tool Co. The National Stock Number assigned to this part is 3110000609288, 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 AS55838.