Power Transmission Equipment, Prime Movers, Machines and Machine Parts
- Article 37 - Purpose, Definitions and Standards (§§ 3940 — 3945)
- Article 41 - Prime Movers and Machinery (§§ 3995 — 4003)
- Article 43 - Shafting, Collars, Clutches, Cut-off Couplings and Clutch Pulleys (§§ 4050 — 4052)
- Article 44 - Pulleys (§§ 4060 — 4063)
- Article 45 - Belt and Pulley Drives (§§ 4070 — 4072)
- Article 46 - Gears, Friction Drives, Sprockets, and Chains (§§ 4075 — 4077)
- Article 47 - Power Disconnecting Devices (§§ 4085 — 4086)