| 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 |
| 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 |
| CAComplex Aerospace, LLC | Auburn | WA | — | ◇ UNVERIFIED |
| CPComtech Precision Machine, INC. | Clearwater | FL | — | ◇ 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 |
| CSConstructive Sheet Metal INC | Grand Rapids | MI | — | ◇ UNVERIFIED |
| CCContemporary Carbide Technologies, INC. | Deland | FL | — | ◇ UNVERIFIED |
| CIContinental Industries INC. | Elkhart | IN | — | ◇ UNVERIFIED |
| CPContinental Precision Machine | Santa Clara | CA | — | ◇ UNVERIFIED |
| CMContract Machining & Manufacturing INC | Joplin | MO | — | ◇ UNVERIFIED |
| CPControl Point INC. | Charleston | WV | — | ◇ UNVERIFIED |
| CIConverse Inds | Kenosha | WI | — | ◇ UNVERIFIED |
| CBCooper Bearings, INC. | Georgetown | DE | — | ◇ UNVERIFIED |
| CLCoopers LLC | Boyertown | PA | — | ◇ UNVERIFIED |
| CTCooper Tool & Machine Supply Company, INC. | Oxford | 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 |
| CICorban Industries INC | Belton | MO | — | ◇ UNVERIFIED |
| CMCordeck Manufacturing | Denton | TX | — | ◇ UNVERIFIED |
| CMCoren Metal Crafts, CO. | Bensalem | PA | — | ◇ 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 |
| CCCorrosion Control CORP | Pedricktown | NJ | — | ◇ UNVERIFIED |
| CCCorrosion Control CORP. | Pedricktown | NJ | — | ◇ UNVERIFIED |
| CICorrugated Industries, INC. | Chalmette | LA | — | ◇ UNVERIFIED |
| CICorrugated Industries of Florida, INC | Tampa | FL | — | ◇ UNVERIFIED |
| CFCorry Forge Company - West | Corry | PA | — | ◇ UNVERIFIED |
| CRCosmos Rings | Lincoln | CA | — | ◇ UNVERIFIED |
| CMCostello Machine LLC | Chesterfield | MI | — | ◇ UNVERIFIED |
| CFCountryside Fabrication Inc | Grantsburg | WI | — | ◇ UNVERIFIED |
| CMCountywide Mechanical System, INC | Cajon | CA | — | ◇ UNVERIFIED |
| CMCovenant Machine Company LLC | Newton | NH | — | ◇ UNVERIFIED |
| CMCovington Machine and Welding INC | Preston | MD | — | ◇ UNVERIFIED |
| CMCovlet Machine & Design Inc. | Marysville | WA | — | ◇ UNVERIFIED |
| CMCox Machine | Harper | KS | — | ◇ UNVERIFIED |
| CMCox Machine & Fab LLC | Indian Trail | NC | — | ◇ UNVERIFIED |
| CFCpc Fabrication INC | Santa Ana | CA | — | ◇ UNVERIFIED |
| CECph Enterprises INC. | Bruce | WI | — | ◇ UNVERIFIED |
 CPK Manufacturing LLC | San Jose | CA | — | ◇ UNVERIFIED |
| CICpm, INC. | Billings | MT | — | ◇ UNVERIFIED |
| CMC.P.R. Machining, LLC | South Bend | IN | — | ◇ UNVERIFIED |
| CMCraddock Machine Shop | Stollings | WV | — | ◇ UNVERIFIED |
| CMCraden Manufacturing Co., INC. | Richfield | WI | — | ◇ UNVERIFIED |
| CBCraft Bearing Company INC | Hampton | VA | — | ◇ UNVERIFIED |
| CLCraft Leasing LLC | Buffalo | NY | — | ◇ UNVERIFIED |
| CMCraft Machine Works | Hampton | VA | — | ◇ UNVERIFIED |
| CICrafts INC. | Manitowoc | WI | — | ◇ UNVERIFIED |
| CCCraftsman Custom Metals, LLC | Schiller Park | IL | — | ◇ UNVERIFIED |
| CSCraig S. Prucha | Pavilion | NY | — | ◇ UNVERIFIED |
 Craig Technologies | Cape Canaveral | FL | — | ◇ UNVERIFIED |
| CGCramers Grinding & Tooling Inc | Springfield | OR | — | ◇ UNVERIFIED |
| CTCrane Technology Co., Inc. | Westlake Village | CA | — | ◇ UNVERIFIED |
| CMCrawley Machine Co LLC | Crown Point | IN | — | ◇ UNVERIFIED |
| CHCrease HVAC, Inc. | Rochester | NY | — | ◇ UNVERIFIED |
| CCCreason Corrugated and Machinery CO INC | Wichita | KS | — | ◇ UNVERIFIED |
| CCCreative CNC LLC | New Berlin | WI | — | ◇ UNVERIFIED |
| CICreative Industries LLC | Chippewa Falls | WI | — | ◇ UNVERIFIED |
 Creative Machining, LLC | Saint Joseph | MO | — | ◇ UNVERIFIED |
| CMCreative Manufacturing Services, LLC | Baton Rouge | LA | — | ◇ UNVERIFIED |
| CMCreative Metal Works CORP | Irvington | NJ | — | ◇ UNVERIFIED |
| CPCreative Products LLC | Beaverton | OR | — | ◇ UNVERIFIED |
| CSCreative Sheet Metal INC | Leeds | UT | — | ◇ UNVERIFIED |
| CSCreative Steel Inc. | Salem | OR | — | ◇ UNVERIFIED |
| CMCreed Monarch, INC. | New Britain | CT | — | ◇ UNVERIFIED |
