| 331110 — Iron and Steel Mills and Ferroalloy Manufacturing | Not reported |
| 331210 — Iron and Steel Pipe and Tube Manufacturing from Purchased Steel | Not reported |
| 331221 — Rolled Steel Shape Manufacturing | Not reported |
| 331222 — Steel Wire Drawing | Not reported |
| 331315 — Aluminum Sheet, Plate, and Foil Manufacturing | Not reported |
| 331318 — Other Aluminum Rolling, Drawing, and Extruding | Not reported |
| 331420 — Copper Rolling, Drawing, Extruding, and Alloying | Not reported |
| 331491 — Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding | Not reported |
| 332111 — Iron and Steel Forging | Not reported |
| 332112 — Nonferrous Forging | Not reported |
| 332114 — Custom Roll Forming | Not reported |
| 332117 — Powder Metallurgy Part Manufacturing | Not reported |
| 332313 — Plate Work Manufacturing | Not reported |
| 332322 — Sheet Metal Work Manufacturing | Not reported |
| 332510 — Hardware Manufacturing | Not reported |
| 332613 — Spring Manufacturing | Not reported |
| 332618 — Other Fabricated Wire Product Manufacturing | Not reported |
| 332710 — Machine Shops | Not reported |
| 332911 — Industrial Valve Manufacturing | Not reported |
| 332912 — Fluid Power Valve and Hose Fitting Manufacturing | Not reported |
| 332919 — Other Metal Valve and Pipe Fitting Manufacturing | Not reported |
| 332996 — Fabricated Pipe and Pipe Fitting Manufacturing | Not reported |
| 333511 — Industrial Mold Manufacturing | Not reported |
| 333515 — Cutting Tool and Machine Tool Accessory Manufacturing | Not reported |
| 333612 — Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing | Not reported |
| 333613 — Mechanical Power Transmission Equipment Manufacturing | Not reported |
| 423510 — Metal Service Centers and Other Metal Merchant Wholesalers | Not reported |
| 423710 — Hardware Merchant Wholesalers | Not reported |