| PSC | Description |
|---|---|
| 3910 | Conveyors |
| 3915 | Materials feeders |
| 3920 | Mat handling eq - nonself-propelled |
| 3930 | Warehouse trks & tractors self-prop |
| 3940 | Blocks tackle rigging & slings |
| 3950 | Winches hoists cranes & derricks |
| 3960 | Elevators & escalators |
| 3990 | Misc materials handling eq |