| BFBenton Foundry INC | Benton | PA | Primary Metal Manufacturing331511 | 100-499 | ● ACTIVE |
| BBBerntsen Brass & Aluminum Foundry INC | Madison | WI | Primary Metal Manufacturing331520 | 100-499 | ● ACTIVE |
Bescast, INC. | Willoughby | OH | Primary Metal Manufacturing331512 | 100-499 | ● ACTIVE |
| BIBetz Industries | Grand Rapids | MI | Primary Metal Manufacturing331511 | 100-499 | ● ACTIVE |
| BMBison Metals Technologies LLC | Shawnee | OK | Primary Metal Manufacturing331420 | 100-499 | ● ACTIVE |
Boose Aluminum Foundry CO INC | Stevens | PA | Primary Metal Manufacturing331524 | — | ● ACTIVE |
Bridesburg Foundry Company | Whitehall | PA | Primary Metal Manufacturing331523 | 20-99 | ● ACTIVE |
Buck Company, LLC | Quarryville | PA | Primary Metal Manufacturing331511 | 100-499 | ● ACTIVE |
Buddy Bar Casting, LLC | South Gate | CA | Primary Metal Manufacturing331524 | 100-499 | ● ACTIVE |
| BMBull Moose Tube CO | Trenton | GA | Primary Metal Manufacturing331110 | 20-99 | ● ACTIVE |
| CAC a Lawton CO | De Pere | WI | Primary Metal Manufacturing331510 | 100-499 | ● ACTIVE |
California Screw Products CORP | Paramount | CA | Primary Metal Manufacturing331221 | 20-99 | ● ACTIVE |
Calumet Brass Foundry, INC | Dolton | IL | Primary Metal Manufacturing331524 | 1-19 | ● ACTIVE |
Carlton Forge Works | Paramount | CA | Primary Metal Manufacturing331513 | 100-499 | ● ACTIVE |
Cast Aluminum Solutions, LLC | Batavia | IL | Primary Metal Manufacturing331312 | 100-499 | ● ACTIVE |
| CSCasting Solutions LLC | Zanesville | OH | Primary Metal Manufacturing331111 | 100-499 | ● ACTIVE |
Cast Technologies INC | Peoria | IL | Primary Metal Manufacturing331524 | 20-99 | ● ACTIVE |
Catalina Cylinders, INC. | Garden Grove | CA | Primary Metal Manufacturing331318 | 20-99 | ● ACTIVE |
| CRCatalyst Refiners INC | Nitro | WV | Chemical Manufacturing325180 | 20-99 | ● ACTIVE |
Ccr Products, LLC | West Hartford | CT | Primary Metal Manufacturing331110 | 20-99 | ● ACTIVE |
| CACentury Aluminum Sebree LLC | Robards | KY | Primary Metal Manufacturing331312 | 500+ | ● ACTIVE |
Cera-met LLC | Bethlehem | PA | Primary Metal Manufacturing331524 | 100-499 | ● ACTIVE |
| CWCerro Wire LLC | Hartselle | AL | Primary Metal Manufacturing331420 | 100-499 | ● ACTIVE |
| CVChaparral Virginia INC | Petersburg | VA | Primary Metal Manufacturing331110 | 100-499 | ● ACTIVE |
| CACharter Aarrowcast | Shawano | WI | Primary Metal Manufacturing331511 | 100-499 | ● ACTIVE |
| CSCharter Steel - Saukville | Saukville | WI | Primary Metal Manufacturing331100 | 500+ | ● ACTIVE |
| CHChicago Heights Steel | Chicago Heights | IL | Primary Metal Manufacturing331110 | 100-499 | ● ACTIVE |
Chicago Magnesium Casting CO | Blue Island | IL | Primary Metal Manufacturing331524 | — | ● ACTIVE |
| CACimini & Associates INC | Westerly | RI | Primary Metal Manufacturing331491 | 20-99 | ● ACTIVE |
| CCCleveland-cliffs Cleveland Works | Cleveland | OH | Primary Metal Manufacturing331110 | 500+ | ● ACTIVE |
| CSCleveland-cliffs Steel CORP | Middletown | OH | Primary Metal Manufacturing331110 | 500+ | ● ACTIVE |
| CSCleveland-cliffs Steel CORP - Dearborn Works | Dearborn | MI | Primary Metal Manufacturing331110 | 500+ | ● ACTIVE |
| CSCleveland-cliffs Steel Corporation - Zanesville Works | Zanesville | OH | Primary Metal Manufacturing331110 | 100-499 | ● ACTIVE |
| CSCmc Steel Tennessee | Knoxville | TN | Primary Metal Manufacturing331110 | 100-499 | ● ACTIVE |
Concorde Battery Corporation | West Covina | CA | Primary Metal Manufacturing331491 | 100-499 | ● ACTIVE |
| CMConsolidated Metal Products (1431072125) | Cincinnati | OH | Primary Metal Manufacturing331221 | 100-499 | ● ACTIVE |
Consolidated Storage Companies, INC. | Tatamy | PA | Primary Metal Manufacturing331221 | — | ● ACTIVE |
| CSControls Southeast, INC | Pineville | NC | Primary Metal Manufacturing331524 | 100-499 | ● ACTIVE |
| CPCore Pipe Products INC | Sanford | FL | Primary Metal Manufacturing331210 | 20-99 | ● ACTIVE |
| CMCrabil Manufacturing, INC. | Saint Petersburg | FL | Primary Metal Manufacturing331210 | — | ● ACTIVE |
Craftech Metal Forming, INC | Perris | CA | Primary Metal Manufacturing331492 | — | ● ACTIVE |
| CACurtis-maruyasu America | Lebanon | KY | Primary Metal Manufacturing331210 | 100-499 | ● ACTIVE |
| DDD. D. Wire Co., INC. | Temple City | CA | Primary Metal Manufacturing331222 | — | ● ACTIVE |
Delta Centrifugal, LLC | Temple | TX | Primary Metal Manufacturing331110 | 100-499 | ● ACTIVE |
Delta Group Electronics INC | San Diego | CA | Primary Metal Manufacturing331420 | 20-99 | ● ACTIVE |
| DNDicastal North America, INC. | Greenville | MI | Primary Metal Manufacturing331523 | 100-499 | ● ACTIVE |
| DIDoncasters INC Precision Castings New England | Groton | CT | Primary Metal Manufacturing331512 | 100-499 | ● ACTIVE |
Douglass Truck Bodies INC | Bakersfield | CA | Primary Metal Manufacturing331492 | 100-499 | ● ACTIVE |
Duraloy Technologies, INC. | Scottdale | PA | Primary Metal Manufacturing331110 | 100-499 | ● ACTIVE |
Dynacast, LLC | Elgin | IL | Primary Metal Manufacturing331523 | 100-499 | ● ACTIVE |