Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number V6400 7700 NRB found under Gear Assembly Speed Decreaser by Eastern Gear Corp. The National Stock Number assigned to this part is 3010010253682, and the Federal Supply Class is 3010 Torque Converters And Speed Changers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like V6400 7700 NRB.