Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S22-4 found under Adapter Sleeve Bear by F M C Corp. The National Stock Number assigned to this part is 3110001498958, 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 S22-4.