| CMCommercial Metal Plastics and Graphics Inc. | Orlando | FL | — | ◇ UNVERIFIED |
| CMCommercial Metals Company | Etiwanda | CA | — | ◇ UNVERIFIED |
| CMCommercial Metals Company | Jacksonville | FL | — | ◇ UNVERIFIED |
| CMCommercial Metals Company Rebar | San Antonio | TX | — | ◇ UNVERIFIED |
| CMComplete Manufacturing Services, INC. | Magnolia | TX | — | ◇ UNVERIFIED |
| CMConstruction Materials, INC. | Montgomery | AL | — | ◇ UNVERIFIED |
| CRContainer Repair Service | Emmaus | PA | — | ◇ UNVERIFIED |
| CCContainment Consultants, INC | Gilroy | CA | — | ◇ UNVERIFIED |
| CSContinental Steel Works, INC. | Butte | MT | — | ◇ UNVERIFIED |
| CSContractors Steel Company | Belleville | MI | — | ◇ UNVERIFIED |
| CEControlled Enviroments, Inc. | Houston | TX | — | ◇ UNVERIFIED |
| CMCoronado Manufacturing LLC | Sun Valley | CA | — | ◇ UNVERIFIED |
| CMCosmos Manufacturing, INC. | South Chicago Heights | IL | — | ◇ UNVERIFIED |
| CMCrown Metal Buildings | Cabot | AR | — | ◇ UNVERIFIED |
| CBCt Builders | Great Falls | MT | — | ◇ UNVERIFIED |
| CTC & T Building Technologies, LLC | Cypress | TX | — | ◇ UNVERIFIED |
| CSCuenca Steel Corporation | Miami | FL | — | ◇ UNVERIFIED |
| CBCustom Bilt Metals LLC | Whittier | CA | — | ◇ UNVERIFIED |
| CMCustom Metal Buildings LLC | Paris | TN | — | ◇ UNVERIFIED |
| CSCustom Sheet & Metal Fabricators LLC | Chattanooga | TN | — | ◇ UNVERIFIED |
| CSCustom Steel Fabricators, INC. | Columbia | TN | — | ◇ UNVERIFIED |
| CSCustom Steel Processing, INC. | Granite City | IL | — | ◇ UNVERIFIED |
| CLCvx LLC | Telford | PA | — | ◇ UNVERIFIED |
| COCycling on Two Wheels, LLC | Grovetown | GA | — | ◇ UNVERIFIED |
| DDD5 Design and Metal Fabrication, LLC | Chicago | IL | — | ◇ UNVERIFIED |
 Dakota Bodies LLC | Liberty | MO | — | ◇ UNVERIFIED |
 Dameron Alloy Foundries Dba Dafco INC | Louisville | KY | — | ◇ UNVERIFIED |
| DSDanick Specialties & Support, INC. | Niceville | FL | — | ◇ UNVERIFIED |
| DIDanmar Installation INC | Memphis | TN | — | ◇ UNVERIFIED |
| DSDans Steel Company | Salem | OR | — | ◇ UNVERIFIED |
| DRDayton Rogers Manufacturing company | Newberry | SC | — | ◇ UNVERIFIED |
| DRDayton Rogers of Ohio, Inc. | Obetz | OH | — | ◇ UNVERIFIED |
| DMDb Motoring Group, INC. | Miami | FL | — | ◇ UNVERIFIED |
| DBD B Western INC | North Bend | OR | — | ◇ UNVERIFIED |
| DDD & D Machine Works, INC. | Orem | UT | — | ◇ UNVERIFIED |
| DBDeere Built, LLC | Ardmore | OK | — | ◇ UNVERIFIED |
| DKDelaco Kasle Processing Indiana LLC | Jeffersonville | IN | — | ◇ UNVERIFIED |
| DFDelafield Fluid Technologies | Mabank | TX | — | ◇ UNVERIFIED |
| DRDelaney Road Facility | Hitchcock | TX | — | ◇ UNVERIFIED |
| DIDelos Industries Inc. | Payson | UT | — | ◇ UNVERIFIED |
| DMDelta Metals Company, INC. | Memphis | TN | — | ◇ UNVERIFIED |
| DADesign Assistance Construction Systems INC | Sparrows Point | MD | — | ◇ UNVERIFIED |
| DMDexter Marine Products LLC | San Marcos | CA | — | ◇ UNVERIFIED |
| DSDfp Systems | El Cajon | CA | — | ◇ UNVERIFIED |
| DGD & G Fabrication and Pipe Supports | Theodore | AL | — | ◇ UNVERIFIED |
| DADigital Automation Technical Service, Inc | Anoka | MN | — | ◇ UNVERIFIED |
| DIDima Industries | Elk Grove Village | IL | — | ◇ UNVERIFIED |
| DSDirect Sales INC. | Hollywood | FL | — | ◇ UNVERIFIED |
| DSDiscount Structures, Ltd | Norristown | PA | — | ◇ UNVERIFIED |
| DMDixieland Metals of Alabama LLC | Dothan | AL | — | ◇ UNVERIFIED |
