| CMCustom Mold - Design LLC | Forest Lake | MN | — | ◇ UNVERIFIED |
| CMCustom Molded Products | Phoenix | AZ | — | ◇ UNVERIFIED |
| CPCustom & Precision Products | Hamden | CT | — | ◇ UNVERIFIED |
 Custom Products of Litchfield INC | Litchfield | MN | — | ◇ UNVERIFIED |
| CSCustom Solutions Manufacturing INC | Andover | MN | — | ◇ UNVERIFIED |
| CSCustom Solutions Manufacturing INC | Anoka | MN | — | ◇ UNVERIFIED |
| CSCustom Steel Manufacturing INC. | Belton | MO | — | ◇ UNVERIFIED |
| CTCustom Tech Services, L.l.c. | Mesa | AZ | — | ◇ UNVERIFIED |
| CTCustom Threading | Houston | TX | — | ◇ UNVERIFIED |
| CTCustom Tool & Design Company INC | Huntingdon | TN | — | ◇ UNVERIFIED |
| CTCustom Tool Inc | Cookeville | TN | — | ◇ UNVERIFIED |
| CMCutters Machine Tool INC | Lexington | TN | — | ◇ UNVERIFIED |
| CECutting Edge Manufacturing and Supply LLC | Leander | TX | — | ◇ UNVERIFIED |
| CECutting Edge Manufacturing, INC. | Nampa | ID | — | ◇ UNVERIFIED |
| CACvt Acquisition, INC. Dba Cherry Valley Tool & Mac | Rockford | IL | — | ◇ UNVERIFIED |
| CICw Industries, LLC | Gilmer | TX | — | ◇ UNVERIFIED |
| CECWS Enterprises LLC | New Richmond | WI | — | ◇ UNVERIFIED |
| CSCw Shumway & Sons | Batavia | IL | — | ◇ UNVERIFIED |
| CICyclops Iron Works | Mamaroneck | NY | — | ◇ UNVERIFIED |
| CICyphert Industries, INC. | Westover | WV | — | ◇ UNVERIFIED |
| CFCypress Fabrication Services, L.L.C. | St Martinville | LA | — | ◇ UNVERIFIED |
| CGCyprian Group, LLC | Spencer | IN | — | ◇ UNVERIFIED |
| CTCzech Tool, INC. | Saegertown | PA | — | ◇ UNVERIFIED |
| DLD2h, LLC | Salem | OR | — | ◇ UNVERIFIED |
| DEDa Eun Pacific | Tamuning | GU | — | ◇ UNVERIFIED |
| DMDahlheimer Machining INC | Saint Michael | MN | — | ◇ UNVERIFIED |
| DEDaita Enterprises Incorporated | Seattle | WA | — | ◇ UNVERIFIED |
| DCDakota Cable Solutions Inc. | Piedmont | SD | — | ◇ UNVERIFIED |
| DEDakota Engineering | Indianapolis | IN | — | ◇ UNVERIFIED |
| DMDalco Machining, INC. | Platteville | WI | — | ◇ UNVERIFIED |
| DMDal Machine INC | Otsego | MN | — | ◇ UNVERIFIED |
| DIDaltech, INC. | Hanover Township | PA | — | ◇ UNVERIFIED |
| DFDalton Foundry | Warsaw | IN | — | ◇ UNVERIFIED |
| DSDamascus Steel Casting Company | New Brighton | PA | — | ◇ UNVERIFIED |
| DSDamascus Steel Casting Company | New Brighton | PA | — | ◇ UNVERIFIED |
 Dameron Alloy Foundries INC | Compton | CA | — | ◇ UNVERIFIED |
| DODam Operating Co. LLC | Muskegon | MI | — | ◇ UNVERIFIED |
| DPD&B Property, LLC | Hudson | MA | — | ◇ UNVERIFIED |
| DLDamtech LLC | Bayfield | CO | — | ◇ UNVERIFIED |
| DEDane Engineering INC | Brainerd | MN | — | ◇ UNVERIFIED |
| DKDaniel Kirsch | Woodburn | OR | — | ◇ UNVERIFIED |
| DEDan-kar Engineering LLC | Woburn | MA | — | ◇ UNVERIFIED |
| DMDannel Machine Company | Dalton | GA | — | ◇ UNVERIFIED |
| DRDan Ray Machine Company | Haverhill | MA | — | ◇ UNVERIFIED |
| DCDan's Custom Sheet Metal,inc. | Naples | FL | — | ◇ UNVERIFIED |
| DEDanson Enterprises, LLC | Fort Collins | CO | — | ◇ UNVERIFIED |
| DPD.A. Precision Products, Inc. | Mason | OH | — | ◇ UNVERIFIED |
| DFDarchuks Fabrication and Stainless Steel Works INC | Park Rapids | MN | — | ◇ UNVERIFIED |
| DMDarco Manufacturing INC. | Syracuse | NY | — | ◇ UNVERIFIED |
| DIDa-rew INC | Owatonna | MN | — | ◇ UNVERIFIED |
