| ANAdvanced Nitriding Solutions, LLC | Batesville | IN | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| AAAerospace Aluminum Processing LLC | South Salt Lake | UT | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| ATAjax Tocco Magnethermic - Madison Heights | Madison Heights | MI | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| AHAl-fe Heat Treating-michigan, LLC | Saginaw | MI | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| ACAllegheny Coatings - Fremont | Fremont | IN | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| ATApplied Thermal Coatings | Chattanooga | TN | Fabricated Metal Product Manufacturing332811 | 1-19 | ◐ LIKELY ACTIVE |
| ABAqua Blasting CORP | Bloomfield | CT | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| BIBct INC Dba Service Heat Treating INC | Milwaukee | WI | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| BHBenton Harbor LLC | Benton Harbor | MI | Plastics and Rubber Products Manufacturing326122 | 20-99 | ◐ LIKELY ACTIVE |
| BBBlue Blade Steel | Kenilworth | NJ | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| BTBluewater Thermal Solutions - Chicago 3 | Melrose Park | IL | Primary Metal Manufacturing331110 | 20-99 | ◐ LIKELY ACTIVE |
| BTBluewater Thermal Solutions - Ridgway | Ridgway | PA | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| DMDependable Metal Treating | Kendallville | IN | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| GSGeneral Surface Hardening | Chicago | IL | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| HHHercules Heat Treating CORP | Brooklyn | NY | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
Hydro Honing Laboratories | East Hartford | CT | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| IHIncertec Heat Treating LLC | Indianapolis | IN | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| JHJasco Heat Treating INC | Fairport | NY | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| KIKtron Incorporated | Marlborough | MA | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| LPLesleh Precision INC | Rostraver Township | PA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| LSLone Star Heat Treating | Houston | TX | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| MIMetal Improvement Company, LLC. - Phoenix | Phoenix | AZ | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| MAMpt America Corporation | Valencia | CA | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| NINitrex INC. | Franklin | IN | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| NINor-cote INC | Warren | MI | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| PTParker Trutec Mmi, INC | Paragould | AR | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
PG Technologies - Ellisville, MS | Ellisville | MS | Fabricated Metal Product Manufacturing332811 | 100-499 | ◐ LIKELY ACTIVE |
| PHPhoenix Heat Treating, INC. | Phoenix | AZ | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| PVPine Valley Subdivision Wwtp | Salisbury | NC | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| PPProduction Paint Stripping - Huntsville | Huntsville | AL | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| RSRochester Steel Treating Works, INC | Rochester | NY | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| RHRockford Heat Treaters INC | Rockford | IL | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| SLSaginaw LLC | Saginaw | MI | Fabricated Metal Product Manufacturing332811 | 1-19 | ◐ LIKELY ACTIVE |
Specialty Steel Treating INC | Fraser | MI | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| SPS & P Metallurgy Services | Warwick | RI | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| TTTsi Titanium INC. | Derry | PA | Primary Metal Manufacturing331491 | 20-99 | ◐ LIKELY ACTIVE |
| UHUS Heat Treaters | Kersey | PA | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| WHWalker Heat Treat | Cleveland | OH | Fabricated Metal Product Manufacturing332811 | 1-19 | ◐ LIKELY ACTIVE |
| AHAlfe Heat Treating - North Carolina INC | Charlotte | NC | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| APAllied Power Group | Houston | TX | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| ASAlloy Steel Treating CO. INC. | Gobles | MI | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| AAAtmosphere Annealing, LLC | Lansing | MI | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| BIBell Induction Heat-belleville | Belleville | MI | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| BTBodycote Thermal Processing, INC. - Lafayette | Lafayette | LA | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| BMBraddock Metallurgical - Ga | Atlanta | GA | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| BCBrazing Concepts | Coldwater | MI | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| CIChem-plate Industries INC | Elk Grove Village | IL | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| CICmc Impact Metals | Chicora | PA | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| CECockburn Enterprises INC | Muscle Shoals | AL | Primary Metal Manufacturing331523 | — | ◐ LIKELY ACTIVE |
| CRCurran Renewable Energy LLC | Massena | NY | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |