Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number H3HH 6 found under Gear Assembly Speed Decreaser by Siemens Industry Inc. The National Stock Number assigned to this part is 3010016028565, 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 H3HH 6.