FSC 3010

Includes Fluid Couplings; Nonvehicular Clutches and Couplings; Horizontal Right Angle Drive Gear Units.
Excludes Automotive Torque Converters (FSC 2520); Vehicular Power Transmission Components (FSC 2520); Rotary Aircraft Transmission Gear Units (FSC 1615).

FSC 3020

Includes Power Transmission Chain; Matched Gear Sets.
Excludes Reduction Gears (FSC 3010).

FSC 3030

Includes Belt Lacings; Belt Pins.

FSC 3040

Includes Shafts and Shafting; Collars; Gearshafts; Ball Joints; Actuating Cylinders.