| CEC&l Engineering | Buena Park | CA | — | ◇ UNVERIFIED |
 Cleveland Tank & Supply, INC. | Cleveland | OH | — | ◇ UNVERIFIED |
| CMClifco Metal Mfg. INC | Roy | UT | — | ◇ UNVERIFIED |
| CSClifco Sheet Metal Manufacturing LLC | Portland | OR | — | ◇ UNVERIFIED |
| CCClimate Control CO | Morgantown | WV | — | ◇ UNVERIFIED |
| CMCline Machine, INC. | Tulsa | OK | — | ◇ UNVERIFIED |
| CAClint and Brenda Grassel, LLC | Liberty Lake | WA | — | ◇ UNVERIFIED |
| CIClinton Industries INC | Elizabethtown | KY | — | ◇ UNVERIFIED |
| CLC L Machine, LLC | Joplin | MO | — | ◇ UNVERIFIED |
| CMCloud Machine Tool & Fabrication INC | Humboldt | TN | — | ◇ UNVERIFIED |
| CMClouse Machine Shop | Saint Joseph | KY | — | ◇ UNVERIFIED |
| CFCLUTCH FABRICATION & DESIGN LLC | Bloomington | IN | — | ◇ UNVERIFIED |
| CFCLUTCH FABRICATION & DESIGN LLC | Bloomington | IN | — | ◇ UNVERIFIED |
| CICm&b, INC. | Oakland | CA | — | ◇ UNVERIFIED |
| CCCMC Commercial Real Estate, LLC | Clinton Township | MI | — | ◇ UNVERIFIED |
| CPCmc Post Oklahoma LLC CO Commercial Met / Cmc Southern Post Durant | Durant | OK | — | ◇ UNVERIFIED |
| CRCmc Rebar - Ca - Napa | Napa | CA | — | ◇ UNVERIFIED |
| CSCmc Steel Fabricators, INC Dba \ Cmc Steel Fresno | Fresno | CA | — | ◇ UNVERIFIED |
| CMCmf (custom Metal Fabricators) | Orange | CA | — | ◇ UNVERIFIED |
| CRCm Routing LLC | Racine | WI | — | ◇ UNVERIFIED |
| CMCmt Machining and Fabricating, LLC | Urbana | OH | — | ◇ UNVERIFIED |
| CICnc Industries INC. | Fairmont | WV | — | ◇ UNVERIFIED |
| CICNC Innovations Inc | Somersworth | NH | — | ◇ UNVERIFIED |
| CICnc Innovations INC | Saint Paul | MN | — | ◇ UNVERIFIED |
 Cnc Machine and Fabrication, INC. | North Logan | UT | — | ◇ UNVERIFIED |
| CMCnc Metalcraft LLC | Hopkins | MN | — | ◇ UNVERIFIED |
| COCNC Offroad LLC | Kenosha | WI | — | ◇ UNVERIFIED |
| CPCnc Precision Manufacturing INC | Sherwood | OR | — | ◇ UNVERIFIED |
| CSCnc Swiss INC. | Addison | IL | — | ◇ UNVERIFIED |
| CNC. Niel Welding, Inc. | Longview | TX | — | ◇ UNVERIFIED |
| CTCoach Tool & Die, INC. | Dayton | OH | — | ◇ UNVERIFIED |
| CECoasta Enterprises LLC | Peachtree City | GA | — | ◇ UNVERIFIED |
| CCCoastal Casting Service INC. | Houston | TX | — | ◇ UNVERIFIED |
| CCCoastal Construction and Lumber Company, INC | Yuba City | CA | — | ◇ UNVERIFIED |
| CSCoastal Sunbelt Associates, Incorporated | Savannah | GA | — | ◇ UNVERIFIED |
| CSCoast Sheet Metal INC | Costa Mesa | CA | — | ◇ UNVERIFIED |
| CSCoast Sheet Metal, INC. | Huntington Beach | CA | — | ◇ UNVERIFIED |
| CTCoast to Coast Metal Finishing CORP | Alhambra | CA | — | ◇ UNVERIFIED |
| CTCobak Tool & Manufacturing CO | Saint Louis | MO | — | ◇ UNVERIFIED |
| CDCobalt Development, Inc. | Arlington | WA | — | ◇ UNVERIFIED |
 Cobalt Enterprises, L.L.C. | Granite Falls | WA | — | ◇ UNVERIFIED |
| CCCobblestone Centre Lc | Oasis | UT | — | ◇ UNVERIFIED |
| CICobraa, INC. | Aviston | IL | — | ◇ UNVERIFIED |
| CMCobra Metal Works, Inc. | Elgin | IL | — | ◇ UNVERIFIED |
| CWCode Welding & Mfg INC | Blaine | MN | — | ◇ UNVERIFIED |
| CCody | San Antonio | TX | — | ◇ UNVERIFIED |
| CCCoffman Custom Machine LLC | Grain Valley | MO | — | ◇ UNVERIFIED |
| CTCohone Technologies Sales & Service, LLC | Gilbert | AZ | — | ◇ UNVERIFIED |
| CSCoil Steel Processing LLC | Toledo | OH | — | ◇ UNVERIFIED |
| CCCole CNC LLC | Fort Morgan | CO | — | ◇ UNVERIFIED |
| CMColeman Machine | Menominee | MI | — | ◇ UNVERIFIED |
| CMColeman Machine INC | Menominee | MI | — | ◇ UNVERIFIED |
| CTColeman Tool & Mfg CORP | Union Grove | WI | — | ◇ UNVERIFIED |
| CMCollier Machine and Fabrication, INC. | Prattville | AL | — | ◇ UNVERIFIED |
| CMCollier Metal Works LLC | Blackfoot | ID | — | ◇ UNVERIFIED |
| CCCollimated Cuts LLC | Brillion | WI | — | ◇ UNVERIFIED |
| CCCollins CORP. | Longview | TX | — | ◇ UNVERIFIED |
| CWColonial Wagon & Wheel | Lancaster | OH | — | ◇ UNVERIFIED |
| CPColorado Precision Machining | Arvada | CO | — | ◇ UNVERIFIED |
| CMColored Metal Products, INC. | Shelby | NC | — | ◇ UNVERIFIED |
| CBColumbia Basin Machine Company | Moses Lake | WA | — | ◇ UNVERIFIED |
| CCColumbia Chutes, LLC | Wheeling | IL | — | ◇ UNVERIFIED |
| CHColumbiana Hi Tech, LLC | Greensboro | NC | — | ◇ UNVERIFIED |
| CHColumbiana Hi Tech, LLC | Hollister | NC | — | ◇ UNVERIFIED |
| CPColumbia Precision Machine CORP | Burnsville | MN | — | ◇ UNVERIFIED |
| CTColumbia Tool and Gage Company | Wheeling | IL | — | ◇ UNVERIFIED |
| CDColumbus Design & Manufacturing, LLC | Columbus | OH | — | ◇ UNVERIFIED |
| CMColumbus Machine Works | Columbus | OH | — | ◇ UNVERIFIED |
| CMComex Metal Components LLC | Mundelein | IL | — | ◇ UNVERIFIED |
| CMCommander Machining Company, LLC | Springfield | IL | — | ◇ UNVERIFIED |
| CSCommerce SG LTD. | Sidney | OH | — | ◇ UNVERIFIED |
| CCCommercial Cooling-par Engineering INC | City of Industry | CA | — | ◇ UNVERIFIED |
| CFCommercial Fabricating & Engineering INC | Highland | MI | — | ◇ UNVERIFIED |
| CMCommercial Machine Service INC | Cleveland | OH | — | ◇ UNVERIFIED |
| CPCommercial Products Group - Rps | Bensenville | IL | — | ◇ UNVERIFIED |
| CSCommercial Stainless Fabricators, INC. | Marietta | GA | — | ◇ UNVERIFIED |
 Commercial Welding and Machining, Inc. | Clear Lake | MN | — | ◇ UNVERIFIED |
| CMCommonwealth Machine CO. | Danville | VA | — | ◇ UNVERIFIED |
| CMCompatible Manufacturing, INC. | Kalispell | MT | — | ◇ UNVERIFIED |
| CCComplete Construction, INC. | Farmingdale | NY | — | ◇ UNVERIFIED |
| CFComplete Fabrications INC | San Francisco | CA | — | ◇ UNVERIFIED |
| CAComplex Aerospace, LLC | Auburn | WA | — | ◇ UNVERIFIED |
| CCComponex Corporation | Edgerton | WI | — | ◇ UNVERIFIED |
| CMComres Mfg. | Tampa | FL | — | ◇ UNVERIFIED |
| CPComtech Precision Machine, INC. | Clearwater | FL | — | ◇ UNVERIFIED |
| CMConant Metal & Light, INC. | Burlington | VT | — | ◇ UNVERIFIED |
| CConcept1 | North Tonawanda | NY | — | ◇ UNVERIFIED |
| CMConcept Machine & Tool, INC. | Covington | OH | — | ◇ UNVERIFIED |
| CMConcept Manufacturing CO | Holliston | MA | — | ◇ 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 |
| CMConnelly Mechanical INC. | Springfield | MO | — | ◇ UNVERIFIED |
| CGConner Gibbens | Deepwater | MO | — | ◇ UNVERIFIED |
| CEConquest Engineering Company INC | Shoreview | MN | — | ◇ UNVERIFIED |
| CIConquest Industries INC. | Stow | OH | — | ◇ UNVERIFIED |
| CAConroe Awning and Screen INC. | Montgomery | TX | — | ◇ UNVERIFIED |
 Consolidated Machine LLC | Neenah | WI | — | ◇ UNVERIFIED |
| CMConsolidated Metco, INC. | Vancouver | WA | — | ◇ UNVERIFIED |
