Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 999 4 01111 003 found under Ball Bearing by British Aerospace Inc. The National Stock Number assigned to this part is 3110991011822, 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 999 4 01111 003.