Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 12B7900 found under Rotor And Hub Assy by Boehme H O Inc. The National Stock Number assigned to this part is 6615003484689, and the Federal Supply Class is 6615 Automatic Pilot Mechanisms And Airborne Gyro Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 12B7900.