Transmission shafts (including camshafts and crankshafts) and cranks; bearing housings, housed bearings and plain shaft bearings; gears and gearing; ball or roller screws; gear boxes and other speed changers, including torque converters; flywheels and pulleys, including pulley blocks; clutches and shaft couplings (including universal joints); parts thereof:

Transmission shafts (including camshafts and crankshafts) and cranks:

Housed bearings, incorporating ball or roller bearings:

Bearing housings; plain shaft bearings:

Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately; ball or roller screws; gear boxes and other speed changers, including torque converters:

Flywheels and pulleys, including pulley blocks:

Clutches and shaft couplings (including universal joints):

Toothed wheels, chain sprockets and other transmission elements presented separately; parts:

Nuclear reactors; fuel elements (cartridges), non-irradiated, for nuclear reactors; machinery and apparatus for isotopic separation; parts thereof:

Steam or other vapor generating boilers (other than central heating hot water boilers capable also of producing low pressure steam); super-heated water boilers; parts thereof:

Central heating boilers (other than those of heading 8402) and parts thereof:

Auxiliary plant for use with boilers of heading 8402 or 8403 (for example, economizers, super-heaters, soot removers, gas recoverers); condensers for steam or other vapor power units; parts thereof:

Producer gas or water gas generators, with or without their purifiers; acetylene gas generators and similar water process gas generators, with or without their purifiers; parts thereof:

Steam turbines and other vapor turbines, and parts thereof: