Brazecom Industries, LLC | Weare | NH | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| CSCincinnati Steel Treating | Cincinnati | OH | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| DTDowa Tht America INC | Bowling Green | OH | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| DMDynamic Metal Treating, INC. | Canton | MI | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| EHEuclid Heat Treat CO. | Euclid | OH | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
Industrial Metal Finishing, INC. | Placentia | CA | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| MOMorgan Ohare INC | Addison | IL | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| PTParker Trutec | Springfield | OH | Fabricated Metal Product Manufacturing332811 | 100-499 | ◐ LIKELY ACTIVE |
| SSSun Steel Treating INC | South Lyon | MI | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| SSSuper Steel Treating, INC. | Warren | MI | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| TITc Industries | Crystal Lake | IL | Fabricated Metal Product Manufacturing332811 | 100-499 | ◐ LIKELY ACTIVE |
| TTThermal Treatment Center INC | Wickliffe | OH | Fabricated Metal Product Manufacturing332811 | 1-19 | ◐ LIKELY ACTIVE |
| WDWyman-gordon Dillon Sc | Dillon | SC | Fabricated Metal Product Manufacturing332510 | 100-499 | ◐ LIKELY ACTIVE |
| WIWoodworth INC. | Detroit | MI | Fabricated Metal Product Manufacturing332811 | — | ◇ UNVERIFIED |
Advanced Heat Treat CORP. | Cullman | AL | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| ABAltenloh, Brinck & CO. U.s., INC | Pioneer | OH | Fabricated Metal Product Manufacturing332811 | 100-499 | ◐ LIKELY ACTIVE |
| AAAstro Aluminum Treating CO. INC. | South Gate | CA | Fabricated Metal Product Manufacturing332811 | 100-499 | ◐ LIKELY ACTIVE |
| AHAtmosphere Heat Treating INC. | Wixom | MI | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| AIAustemper INC | Clinton Township | MI | Fabricated Metal Product Manufacturing332811 | 1-19 | ◐ LIKELY ACTIVE |
| BABodycote Arlington | Arlington | TX | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| CICmc Impact Metals | Pell City | AL | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
Cook Induction Heating Co., Incorporated | Maywood | CA | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| FCFalls City Machine Technology | Louisville | KY | Fabricated Metal Product Manufacturing332439 | 1-19 | ◐ LIKELY ACTIVE |
George Industries LLC | Endicott | NY | Fabricated Metal Product Manufacturing332116 | — | ◐ LIKELY ACTIVE |
| HIHoneywell International INC - Plant 4 | Freeport | IL | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| HMHudapack Metal Treating INC | Elkhorn | WI | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
Iowa Steel Treating, INC. | Bettendorf | IA | Primary Metal Manufacturing331111 | — | ◐ LIKELY ACTIVE |
| MTMidwest Thermal Vac Mtv Incorporated | Kenosha | WI | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
Mil-spec Heat Treating INC | Huntington Beach | CA | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| PTParker Trutec Mmi INC. | Sevierville | TN | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| RPReliable Plating Works-13th Street | Milwaukee | WI | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
Southwest Specialty Heat Treat INC | Wytheville | VA | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| SHState Heat Treating INC | Grand Rapids | MI | Textile Mills313312 | 20-99 | ◐ LIKELY ACTIVE |
| THTri-city Heat Treat CO | Rock Island | IL | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| THTrojan Heat Treat INC | Homer | MI | Fabricated Metal Product Manufacturing332811 | 500+ | ◐ LIKELY ACTIVE |
| VSValence Surface Technologies | Wichita | KS | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| VPVoestalpine Precision Strip LLC | Pleasant Prairie | WI | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
Advanced Heat Treat CORP | Waterloo | IA | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| AMAjax Metal Processing-cold | Warren | MI | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| CSCentury Sun Metals | Traverse City | MI | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| NMNitrex Metal Technologies INC | Mason | MI | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| SIScot Inds. | Lone Star | TX | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| TCTeikuro CORP | Springfield | OH | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| VSVallourec Star LP / Muskogee Plt | Muskogee | OK | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
Advanced Heat Treat CORP | Monroe | MI | Fabricated Metal Product Manufacturing332811 | — | ◇ UNVERIFIED |
| AMAmerican Metal Treating INC | High Point | NC | Fabricated Metal Product Manufacturing332811 | — | ◇ UNVERIFIED |
| AAAtmosphere Annealing - Bassett Fac | Lansing | MI | Fabricated Metal Product Manufacturing332811 | — | ◇ UNVERIFIED |
| BHBennett Heat Treating CO INC | Newark | NJ | Fabricated Metal Product Manufacturing332811 | — | ◇ UNVERIFIED |
| BTBluewater Thermal Solutions-chicago 2 | Northlake | IL | Fabricated Metal Product Manufacturing332811 | — | ◇ UNVERIFIED |
| BMBombardier Motor Corporation of America | Andrews | NC | Fabricated Metal Product Manufacturing332811 | — | ◇ UNVERIFIED |