Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number G77-77 found under Ball Bearing by Roper Industries Inc Roper Pump. The National Stock Number assigned to this part is 3110012553616, 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 G77-77.