| CICalfabco INC Dba Mr. Washerman | South El Monte | CA | — | ◇ UNVERIFIED |
| CMCalfab & Machine INC. | Exeter | PA | — | ◇ UNVERIFIED |
| CMCalhm Metals INC Dba Weld-kraft | Saint Louis Park | MN | — | ◇ UNVERIFIED |
| CMCaliber Mold and Machine | Akron | OH | — | ◇ UNVERIFIED |
| CACalifornia Air Conveying LLC | Paramount | CA | — | ◇ UNVERIFIED |
| CBCalifornia Business Environments, Inc | Morgan Hill | CA | — | ◇ UNVERIFIED |
| CCCalifornia Chassis INC | Anaheim | CA | — | ◇ UNVERIFIED |
| CECalifornia Expanded Metals Products CO | Pittsburg | CA | — | ◇ UNVERIFIED |
| CFCalifornia Fabrication | Canoga Park | CA | — | ◇ UNVERIFIED |
 California Manufacturing, Inc. | Denton | TX | — | ◇ UNVERIFIED |
| CSCalifornia Sheet Metal INC | Sacramento | CA | — | ◇ UNVERIFIED |
| CSCalifornia Steel Industries INC | Fontana | CA | — | ◇ UNVERIFIED |
| CSCalifornia Steel Stair & Rail | Manteca | CA | — | ◇ UNVERIFIED |
| CECallaway Equipment & Manufacturing, INC. | Oklahoma City | OK | — | ◇ UNVERIFIED |
| CPCal Precision INC | Corona | CA | — | ◇ UNVERIFIED |
 Cal Sierra Pipe LLC | Stockton | CA | — | ◇ UNVERIFIED |
| CCCalumet Container Corporation | Chicago | IL | — | ◇ UNVERIFIED |
| CCCalvert City Marine Works LLC | Calvert City | KY | — | ◇ UNVERIFIED |
| CWCal West Manufacturing | Fontana | CA | — | ◇ UNVERIFIED |
| CLCal-x LLC | Grafton | WI | — | ◇ UNVERIFIED |
| CACamblin at 2257, LLC | Rialto | CA | — | ◇ UNVERIFIED |
| CSCamblin Steel Service, Inc. | Phoenix | AZ | — | ◇ UNVERIFIED |
| CSCamblin Steel Service, Inc. | Rocklin | CA | — | ◇ UNVERIFIED |
| CSCamblin Steel Service, INC | Sacramento | CA | — | ◇ UNVERIFIED |
| CLCambridge LLC | Elgin | IL | — | ◇ UNVERIFIED |
| CPCambridge Press | Somerville | MA | — | ◇ UNVERIFIED |
 Camco Manufacturing, INC. | Athens | PA | — | ◇ UNVERIFIED |
| CMCamelot Metals | Blaine | MN | — | ◇ UNVERIFIED |
| CMCameron Machine Shop, INC. | Richardson | TX | — | ◇ UNVERIFIED |
| CPCameron Process and Compression | Huntington | WV | — | ◇ UNVERIFIED |
| CUCami USA INC | Roswell | NM | — | ◇ UNVERIFIED |
| CCamlaw | Coolidge | GA | — | ◇ UNVERIFIED |
| CACampbell and Shaw Steel INC | Marysville | MI | — | ◇ UNVERIFIED |
| CCCampbell Companies Ti Division | West Lawn | PA | — | ◇ UNVERIFIED |
 Campbell Enterprises Northwest Inc. | Melrose | MN | — | ◇ UNVERIFIED |
| CGCampbell Grinding & Machine, INC. | Lewisville | TX | — | ◇ UNVERIFIED |
| CSCampbell & Shaw Steel INC | Detroit | MI | — | ◇ UNVERIFIED |
| CSCampo Sheet Metal Works, INC. | Houston | TX | — | ◇ UNVERIFIED |
| CTCampos Tool Supplies, L.c. | Aventura | FL | — | ◇ UNVERIFIED |
| CFCamryn Fabrication Dba Pro Weld LLC | Chesterfield | MI | — | ◇ UNVERIFIED |
| CLCams, LLC | Clinton | MD | — | ◇ UNVERIFIED |
| CMCamtech Manufacturing Solutions LLC | Science Hill | KY | — | ◇ UNVERIFIED |
| CECanalta Enterprises LLC Dba Phillips Iron Works | Raleigh | NC | — | ◇ UNVERIFIED |
| CMCanam Metal Prod | San Bernardino | CA | — | ◇ UNVERIFIED |
| CMCanay Mfg., Powder Coating Plus, Dba | Valencia | CA | — | ◇ UNVERIFIED |
| CAC and D Automation & Machine Co., INC. | Oxford | AL | — | ◇ UNVERIFIED |
| CAC and H Enterprises | Fremont | CA | — | ◇ UNVERIFIED |
 C and S Precision Machine LLC | Tempe | AZ | — | ◇ UNVERIFIED |
| CTCannon Tool Company | Canonsburg | PA | — | ◇ UNVERIFIED |
| CPCanopies Plus, INC. | Eufaula | OK | — | ◇ UNVERIFIED |
| CWCanron Western Constructors INC | Portland | OR | — | ◇ UNVERIFIED |
| CAC a Picard INC | Perham | MN | — | ◇ UNVERIFIED |
| CCCapital City Culvert Corporation | Madison | WI | — | ◇ UNVERIFIED |
| CCCapital CNC LLC | Kyle | TX | — | ◇ UNVERIFIED |
| CSCapital Steel & Builders Supply INC | Holt | MI | — | ◇ UNVERIFIED |
| CSCapital Steel & Supply | Jefferson City | MO | — | ◇ UNVERIFIED |
| CWCapital Welding & Fabrication, INC. | Thibodaux | LA | — | ◇ UNVERIFIED |
| CICapitol Iron Works, INC. | Sacramento | CA | — | ◇ UNVERIFIED |
| CMCapitol Machine Company INC. | Jefferson City | MO | — | ◇ UNVERIFIED |
| CSCapitol Steel Fabricatiors INC | Commerce | CA | — | ◇ UNVERIFIED |
| CPC.a. Precision, INC. | Fort Lauderdale | FL | — | ◇ UNVERIFIED |
| CCaptiveaire | Redding | CA | — | ◇ UNVERIFIED |
| CCaptiveaire | Englewood | OH | — | ◇ UNVERIFIED |
| C3Captiveaire 360 Youngsville Addition | Youngsville | NC | — | ◇ UNVERIFIED |
 Captive-aire Systems, INC. | Slidell | LA | — | ◇ UNVERIFIED |
| CTCarbaugh Tool CO. INC. | Elmira | NY | — | ◇ UNVERIFIED |
| CFCarbery Fabrication Company, INC. | Odessa | TX | — | ◇ UNVERIFIED |
| CTCarbide Tool Services INC | Anoka | MN | — | ◇ UNVERIFIED |
| CCCarbondale Custom Metal Fabrication INC. | Carbondale | PA | — | ◇ UNVERIFIED |
 Cardinal Machine CO. | Strongsville | OH | — | ◇ UNVERIFIED |
| CSCardinal Sheet Metal INC | Riverside | CA | — | ◇ UNVERIFIED |
| CVCardinal Valley Manufacturing LLC | Warren | OH | — | ◇ UNVERIFIED |
| CICarico INC. | Fredericksburg | VA | — | ◇ UNVERIFIED |
| CFCarl Fisher Co., INC. | Springfield | MA | — | ◇ UNVERIFIED |
| CKCarl K. Gramberg | Oxnard | CA | — | ◇ UNVERIFIED |
| CMCarlsons Manufacturing of Elk River INC | Elk River | MN | — | ◇ UNVERIFIED |
| CLCarolina Laser Cutting, INC. | Greensboro | NC | — | ◇ UNVERIFIED |
| CMCarol's Machine & Fabrication, Inc.* | Wharton | TX | — | ◇ UNVERIFIED |
| CRCarpenter's Roofing & Sheet Metal, INC. | West Palm Beach | FL | — | ◇ UNVERIFIED |
| CHCARR Holdings, LLC | Elk Grove Village | IL | — | ◇ UNVERIFIED |
| CWCarrier Welding and Fabrication, LLC | Wilton | ME | — | ◇ UNVERIFIED |
| CDCarrillo Design Center | Oceanside | CA | — | ◇ UNVERIFIED |
| CLCarr Lane Drill Bushing CO. | Austin | TX | — | ◇ UNVERIFIED |
| CHCarsten Holdings, LLC | Newton | KS | — | ◇ UNVERIFIED |
| CHCarsten Holdings, LLC | Newton | KS | — | ◇ UNVERIFIED |
| CICartel Industries LLC | Irvine | CA | — | ◇ UNVERIFIED |
| CICarter Iron and Steel Company | Hampton | VA | — | ◇ UNVERIFIED |
| CLCarterJames LLC | Grand Haven | MI | — | ◇ UNVERIFIED |
| CSCarver Sheet Metal Works, Inc. | Salt Lake City | UT | — | ◇ UNVERIFIED |
| CMCary Manufacturing INC | Blaine | MN | — | ◇ UNVERIFIED |
| CECascade Engineering Technologies INC | Milwaukie | OR | — | ◇ UNVERIFIED |
| CBCasco Bay Steel - Saco | Saco | ME | — | ◇ UNVERIFIED |
| CBCasco Bay Steel Structures, INC. | South Portland | ME | — | ◇ UNVERIFIED |
| CFCasper Facilities | Natrona County | WY | — | ◇ UNVERIFIED |
| CMCaspersen Machining CORP | De Forest | WI | — | ◇ UNVERIFIED |
| CACaspian Arms LTD | Wolcott | VT | — | ◇ UNVERIFIED |
| CICastle Industries INC. of Ca. | Ontario | CA | — | ◇ UNVERIFIED |
| CPCast Pac, INC. | Allentown | PA | — | ◇ UNVERIFIED |
| CSCast Sheet Metal LLC | Bryan | TX | — | ◇ UNVERIFIED |
| CSCast Sheet Metal LLC | Mission | TX | — | ◇ UNVERIFIED |
