| Naics index | Naics index description |
|---|---|
| 423840 | Crowns and closures, metal, merchant wholesalers |
| 423840 | Diamonds, industrial, merchant wholesalers |
| 423840 | Drives and gears merchant wholesalers |
| 423840 | Drums, new and reconditioned, merchant wholesalers |
| 423840 | Excelsior (e.g., pads, wrappers) merchant wholesalers |
| 423840 | Fire hydrants merchant wholesalers |
| 423840 | Fittings, industrial, merchant wholesalers |
| 423840 | Gaskets merchant wholesalers |
| 423840 | Gears merchant wholesalers |
| 423840 | General-line industrial supplies merchant wholesalers |