Section 16 Machinery and mechanical appliances; electrical equipment; parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers,and parts and accessories of such articles 84 Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof 84 83 Transmission shafts and cranks; bearing housings; gears...; flywheels... 84 83 20 Bearing housings, incorporating ball or roller bearings 84 83 20 00 Bearing housings, incorporating ball or roller bearings Commodity Code Description 84 83 20 00 000 Bearing housings, incorporating ball or roller bearings