Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number YB216L found under Bearing Ball Annular by Pt Components Inc Drive Div. The National Stock Number assigned to this part is 3110001568101, 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 YB216L.