Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GBF79 found under Bearing Sleeve by Stewart And Stevenson Power Products. The National Stock Number assigned to this part is 3120002935041, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like GBF79.