| 751 | On-site Machinery installation and Repair | |
| 752 | Overhead Crane | |
| 753 | Overhead cranes | |
| 754 | Open down the chain | |
| 755 | One type air compressors | |
| 756 | Optional Accessories | |
| 757 | Omron Temperature Controller E5CWL-R1TC | |
| 758 | Omega Thermocouples Wire | |
| 759 | Overhead Block Clamp | |
| 760 | Ohkura Multi-Zone Paperless Recorder | |
| 762 | Omron Digital Controller E5CC-RX2ASM-800 | |
| 763 | Original Equipment Manufacture | |
| 764 | Open Loop Hollow Rotary Actuator | |
| 765 | Office Phone Booth FAM-PB-01D | |
| 766 | Oilfield Products Engineering Capabilities | |
| 775 | Overload Device 1-30 Ton | |
| 776 | Oil-Less Air Compressor | |
| 777 | OC-SCAN® CCX.3 contactless SMT component counter | |