| 841013 | Hydraulic turbines, water wheels, and regulators therefor.-Of a power exceeding 10,000 kW |
| 841090 | Hydraulic turbines, water wheels, and regulators therefor.-Parts, including regulators |
| 841111 | Turbo-jets, turbo-propellers and other gas turbines.-Of a thrust not exceeding 25 kN |
| 841112 | Turbo-jets, turbo-propellers and other gas turbines.-Of a thrust exceeding 25 kN |
| 841121 | Turbo-jets, turbo-propellers and other gas turbines.-Of a power not exceeding 1,100 kW |
| 841122 | Turbo-jets, turbo-propellers and other gas turbines.-Of a power exceeding 1,100 kW |
| 841181 | Turbo-jets, turbo-propellers and other gas turbines.-Of a power not exceeding 5,000 kW |
| 841182 | Turbo-jets, turbo-propellers and other gas turbines.-Of a power exceeding 5,000 kW |
| 841191 | Turbo-jets, turbo-propellers and other gas turbines.-Of turbo-jets or turbo-propellers |
| 841199 | Turbo-jets, turbo-propellers and other gas turbines.-Other |
| 841210 | Other engines and motors.-Reaction engines other than turbo-jets |
| 841221 | Other engines and motors.-Linear acting (cylinders) |
| 841229 | Other engines and motors.-Other |
| 841231 | Other engines and motors.-Linear acting (cylinders) |
| 841239 | Other engines and motors.-Other |
