| CMCommercial Metals Company | College Station | TX | — | ◇ UNVERIFIED |
| CMCommercial Metals Company | Harlingen | TX | — | ◇ UNVERIFIED |
| CPCommercial Piping & Fabricators, INC | Tar Heel | NC | — | ◇ UNVERIFIED |
| CPCommercial Products Group - Rps | Bensenville | IL | — | ◇ UNVERIFIED |
| CSCommercial Stainless Fabricators, INC. | Marietta | GA | — | ◇ UNVERIFIED |
| CWCommercial Warehouse | Shelbyville | TN | — | ◇ UNVERIFIED |
 Commercial Welding and Machining, Inc. | Clear Lake | MN | — | ◇ UNVERIFIED |
| CMCommonwealth Machine CO. | Danville | VA | — | ◇ UNVERIFIED |
| CMCompatible Manufacturing, INC. | Kalispell | MT | — | ◇ UNVERIFIED |
| CMComplete Metal Fabrication, LLC | Jupiter | FL | — | ◇ UNVERIFIED |
| CAComplex Aerospace, LLC | Auburn | WA | — | ◇ UNVERIFIED |
| CFComplex Fabricators, Inc. | Salt Lake City | UT | — | ◇ UNVERIFIED |
| CPComposite Plastic Systems | Santa Maria | CA | — | ◇ UNVERIFIED |
| CSCompo Steel Products, INC. | Milwaukee | WI | — | ◇ UNVERIFIED |
| CPComtech Precision Machine, INC. | Clearwater | FL | — | ◇ UNVERIFIED |
| CWConatser Welding and Machine, LLC | King City | CA | — | ◇ UNVERIFIED |
| CConcept1 | North Tonawanda | NY | — | ◇ UNVERIFIED |
| CMConcept Machine & Tool, INC. | Covington | OH | — | ◇ UNVERIFIED |
| CMConcept Manufacturing CO | Holliston | MA | — | ◇ UNVERIFIED |
| CIConcord Iron Works INC | Pittsburg | CA | — | ◇ UNVERIFIED |
| CIConcord Iron Works INC | Pittsburg | CA | — | ◇ UNVERIFIED |
| CFConcrete Forms Services LLC | West Jordan | UT | — | ◇ UNVERIFIED |
| CMCondor Manufacturing | Murray | UT | — | ◇ UNVERIFIED |
| CLConectacts LLC | San Bernardino | CA | — | ◇ UNVERIFIED |
| CIConex Industrial Supply | Fort Worth | TX | — | ◇ UNVERIFIED |
| CWCon-fab Welding INC. | Shreveport | LA | — | ◇ UNVERIFIED |
| CMConnecticut Metalworks, LLC | Newington | CT | — | ◇ UNVERIFIED |
| CSConnecticut Stamping & Bending | New Britain | CT | — | ◇ UNVERIFIED |
| CMConnelly Mechanical INC. | Springfield | MO | — | ◇ UNVERIFIED |
| CGConner Gibbens | Deepwater | MO | — | ◇ UNVERIFIED |
| CAConover Area Fabricators Inc | Coatsburg | IL | — | ◇ UNVERIFIED |
| CEConquest Engineering Company INC | Shoreview | MN | — | ◇ UNVERIFIED |
| CIConquest Industries INC. | Stow | OH | — | ◇ UNVERIFIED |
| CAConroe Awning and Screen INC. | Montgomery | TX | — | ◇ UNVERIFIED |
| CIConsecon INC | Gardena | CA | — | ◇ UNVERIFIED |
| CSConshohocken Steel Products, INC. | Ambler | PA | — | ◇ UNVERIFIED |
| CFConsol Fabricators CORP | Sun Valley | CA | — | ◇ UNVERIFIED |
| CFConsolidated Fabrication and Construction, INC. | Wilmington | DE | — | ◇ UNVERIFIED |
| CFConsolidated Fabricators | Auburn | MA | — | ◇ UNVERIFIED |
| CFConsolidated Fabricators CORP | Galt | CA | — | ◇ UNVERIFIED |
 Consolidated Machine LLC | Neenah | WI | — | ◇ UNVERIFIED |
| CMConsolidated Metal Builders | Clovis | NM | — | ◇ UNVERIFIED |
| CMConsolidated Metco, INC. | Vancouver | WA | — | ◇ UNVERIFIED |
| CSConsolidated Southern Industries | Anderson | SC | — | ◇ UNVERIFIED |
| CSConsolidated Southern Industries | Aiken | SC | — | ◇ UNVERIFIED |
| CSConsolidated Southern Industries INC | Anderson | SC | — | ◇ UNVERIFIED |
| CSConsolidated Steel Services, LLC | Charlotte | NC | — | ◇ UNVERIFIED |
| CHConstr Hot Line & Mgmt Partners INC Dba Champ Stee | Santa Ana | CA | — | ◇ UNVERIFIED |
| CMConstruction Materials INC | Minneapolis | MN | — | ◇ UNVERIFIED |
| CMConstruction Materials, INC. | Cedar Rapids | IA | — | ◇ UNVERIFIED |
| CPConstruction Products Dist LLC | Des Moines | IA | — | ◇ UNVERIFIED |
| CSConstruction Systems INC | Maple Plain | MN | — | ◇ UNVERIFIED |
| CSConstructive Sheet Metal INC | Grand Rapids | MI | — | ◇ UNVERIFIED |
| CEContech Engineered Solution LLC | Orchard Park | NY | — | ◇ UNVERIFIED |
 Contech Engineered Solutions | Wahoo | NE | — | ◇ UNVERIFIED |
| Contech Engineered Solutions LLC | Mitchell | IN | — | ◇ UNVERIFIED |
| CCContemporary Carbide Technologies, INC. | Deland | FL | — | ◇ UNVERIFIED |
| CIContinental Industries INC. | Elkhart | IN | — | ◇ UNVERIFIED |
| CPContinental Precision Machine | Santa Clara | CA | — | ◇ UNVERIFIED |
| CTContinental Tool Company INC | Redwood City | CA | — | ◇ UNVERIFIED |
| CMContour Metals CORP | South El Monte | CA | — | ◇ UNVERIFIED |
| CFContract Fabricators, INC | De Kalb | MS | — | ◇ UNVERIFIED |
| CFContract Fabricators, Inc, Iuka Facility | Iuka | MS | — | ◇ UNVERIFIED |
| CIContract Industrial Tooling | Richmond | IN | — | ◇ UNVERIFIED |
| CMContract Machining & Manufacturing INC | Joplin | MO | — | ◇ UNVERIFIED |
| CMContractors Materials Company | Cincinnati | OH | — | ◇ UNVERIFIED |
| CMContractors Materials LLC | New Castle | DE | — | ◇ UNVERIFIED |
| CWContractor's Welding, INC. | Saint Louis | MO | — | ◇ UNVERIFIED |
| CSContract Services Corporation of America | Raytown | MO | — | ◇ UNVERIFIED |
| CPControl Point INC. | Charleston | WV | — | ◇ UNVERIFIED |
| CIConverse Inds | Kenosha | WI | — | ◇ UNVERIFIED |
| CACool-vue Aluminum, INC. | Kenner | LA | — | ◇ UNVERIFIED |
| CPCooper Power Systems | Waukesha | WI | — | ◇ UNVERIFIED |
| CLCoopers LLC | Boyertown | PA | — | ◇ UNVERIFIED |
| CSCooper's Steel Fabricators INC | Shelbyville | TN | — | ◇ UNVERIFIED |
| CSCooper Steel of Virginia | Lynchburg | VA | — | ◇ UNVERIFIED |
| CSCooper Steel Site Development | Shelbyville | TN | — | ◇ UNVERIFIED |
| CSCooper Steel Site Development | Shelbyville | TN | — | ◇ UNVERIFIED |
| CTCooper Tool & Machine Supply Company, INC. | Oxford | AL | — | ◇ UNVERIFIED |
| CSCoosa Steel Corporation | Rome | GA | — | ◇ UNVERIFIED |
| CVCoosa Valley Steel, INC. | Attalla | AL | — | ◇ UNVERIFIED |
| CMCopeland Machine Shop, INC. | Demopolis | AL | — | ◇ UNVERIFIED |
| CMCopeland Manufacturing Corporation | Tulsa | OK | — | ◇ UNVERIFIED |
| CSCopeland Supply Company, LLC | Fruita | CO | — | ◇ UNVERIFIED |
| CCCopper Capital Investment Corporation | Tucson | AZ | — | ◇ UNVERIFIED |
| CCCopper Construction Company, INC. | Vidalia | GA | — | ◇ UNVERIFIED |
| CICopper Industrial LLC | Stockbridge | MI | — | ◇ UNVERIFIED |
| CICoral Industries, INC. (northport) | Northport | AL | — | ◇ UNVERIFIED |
| CICorban Industries INC | Belton | MO | — | ◇ UNVERIFIED |
| CICorchran INC | Waseca | MN | — | ◇ UNVERIFIED |
| CMCordeck Manufacturing | Denton | TX | — | ◇ UNVERIFIED |
| CBCore Brace LLC | West Jordan | UT | — | ◇ UNVERIFIED |
| CMCoren Metal Crafts, CO. | Bensalem | PA | — | ◇ UNVERIFIED |
 Cornerstone Fabricating & Construction Plt 1 | Hemlock | MI | — | ◇ UNVERIFIED |
| CMCornerstone Manufacturing Group LLC | Mentor | OH | — | ◇ UNVERIFIED |
| CMCornerstone Molds & Machining, INC. | Santa Paula | CA | — | ◇ UNVERIFIED |
| CRCornerstone Realty Holdings LLC | Concord Township | OH | — | ◇ UNVERIFIED |
| CMCorning Manufacturing Support | Erwin | NY | — | ◇ UNVERIFIED |
| CMCorporate Machine & Equipment, LLC | Lafayette | LA | — | ◇ UNVERIFIED |
| CICorrugated Industries, INC. | Chalmette | LA | — | ◇ UNVERIFIED |
