| CSCundiff Steel Fab & Erecting | Orange | CA | — | ◇ UNVERIFIED |
| CSCundiff Steel Fabricating & Erecting INC | Orange | CA | — | ◇ UNVERIFIED |
| CECunningham Engineering | Danvers | MA | — | ◇ UNVERIFIED |
| CPCurbs Plus INC | Ringgold | GA | — | ◇ UNVERIFIED |
| CPCurbs Plus, INC | Glendale | AZ | — | ◇ UNVERIFIED |
| CCCurtiss-wright CORP | Wood Ridge | NJ | — | ◇ UNVERIFIED |
| CTCusick Tool, INC. | Hadley | PA | — | ◇ UNVERIFIED |
| CACustom Air Ducts By Rick LLC | Saint Louis Park | MN | — | ◇ UNVERIFIED |
| CACustom Automotive Machine CO. | Weymouth | MA | — | ◇ UNVERIFIED |
| CMCustom-bilt Metals | Mcclellan | CA | — | ◇ UNVERIFIED |
| CPCustom-bilt Products INC | Fairfield | AL | — | ◇ UNVERIFIED |
| CCCustom Concepts Miami Inc | Miami | FL | — | ◇ UNVERIFIED |
| CCCustom Copper Designs | Edmond | OK | — | ◇ UNVERIFIED |
| CCCustom Corrugated & Supply, LLC | Gray | LA | — | ◇ UNVERIFIED |
 Custom Design & Manufacturing | Carrollton | MI | — | ◇ UNVERIFIED |
| CFCustom Fabricated Metals, LLC | Perris | CA | — | ◇ UNVERIFIED |
| CGCustom Grinders Sales, INC. | Chatsworth | GA | — | ◇ UNVERIFIED |
 Custom Iron Works | Lodi | CA | — | ◇ UNVERIFIED |
| Custom Iron Works, INC. | South Beloit | IL | — | ◇ UNVERIFIED |
| CLCustom Land Holding Company LLC | LaBelle | FL | — | ◇ UNVERIFIED |
| CMCustom Machine & Fabrication INC. | West Point | GA | — | ◇ UNVERIFIED |
 Custom Machine Works, INC. | West Monroe | LA | — | ◇ UNVERIFIED |
| CMCustom Machining of Great Bend, Incorporated | Great Bend | PA | — | ◇ UNVERIFIED |
| CMCustom Machining Solutions, LLC | Rootstown | OH | — | ◇ UNVERIFIED |
| CMCustom Machining Works LLC | Tigard | OR | — | ◇ UNVERIFIED |
| CMCustom Metal Fabricators, INC. | Lake Charles | LA | — | ◇ UNVERIFIED |
| CMCustom Metal Fabricators, INC. | Garden City | GA | — | ◇ UNVERIFIED |
| CMCustom Metal Products, INC. | Los Angeles (chatsworth Area) | CA | — | ◇ UNVERIFIED |
| CMCustom Metal Roofing, INC. | Murrayville | GA | — | ◇ UNVERIFIED |
| CMCustom Metals | Little Rock | AR | — | ◇ UNVERIFIED |
| CMCustom Metal & Siding | Leesville | LA | — | ◇ UNVERIFIED |
| CPCustom Packline Engineering | Visalia | CA | — | ◇ UNVERIFIED |
| CPCustom Pipe & Coupling CO INC | Woodburn | OR | — | ◇ UNVERIFIED |
| CPCustom Pipe & Coupling Co., INC. | Lubbock | TX | — | ◇ UNVERIFIED |
| CPCustom Pipe & Coupling Co., INC. | Fresno | CA | — | ◇ UNVERIFIED |
| CPCustom & Precision Products | Hamden | CT | — | ◇ UNVERIFIED |
| CSCustom Sheet and Plate, LLC | Tarentum | PA | — | ◇ UNVERIFIED |
| CSCustom Sheet and Steel Fabrication INC. | Council Grove | KS | — | ◇ UNVERIFIED |
| CSCustom Sheet Metal, INC. | Gaithersburg | MD | — | ◇ UNVERIFIED |
| CSCustom Sheetmetal Services, INC. | Durham | NC | — | ◇ UNVERIFIED |
| CSCustom Sheet & Steel Fabricators | Council Grove | KS | — | ◇ UNVERIFIED |
| CSCustom Solutions Manufacturing INC | Anoka | MN | — | ◇ UNVERIFIED |
| CSCustom Solutions Manufacturing INC | Andover | MN | — | ◇ UNVERIFIED |
| CSCustom Stainless Steel Equipment Co. Inc. | LaBelle | FL | — | ◇ UNVERIFIED |
| CSCustom Stainless Steel INC | Shoreview | MN | — | ◇ UNVERIFIED |
| CSCustom Steel Manufacturing INC. | Belton | MO | — | ◇ UNVERIFIED |
| CSCustom Steel Service | Ames | IA | — | ◇ UNVERIFIED |
| CSCustom Stud INC | Lakeville | MN | — | ◇ UNVERIFIED |
| CTCustom Tech Services, L.l.c. | Mesa | AZ | — | ◇ UNVERIFIED |
| CTCustom Threading | Houston | TX | — | ◇ UNVERIFIED |
| CTCustom Tool Inc | Cookeville | TN | — | ◇ UNVERIFIED |
| CWCustom Welding INC. | Frenchtown | NJ | — | ◇ UNVERIFIED |
| CECutting Edge Fabrication, INC. | Gastonia | NC | — | ◇ UNVERIFIED |
| CECutting Edge Manufacturing and Supply LLC | Leander | TX | — | ◇ UNVERIFIED |
| CACvt Acquisition, INC. Dba Cherry Valley Tool & Mac | Rockford | IL | — | ◇ UNVERIFIED |
| CICw Industries, LLC | Gilmer | TX | — | ◇ UNVERIFIED |
| CLCW Laser and Fabrication LLC | Grandview | MO | — | ◇ UNVERIFIED |
| CPCw Precision Fabrication and Welding, INC. | Houston | TX | — | ◇ UNVERIFIED |
| CSCwp Sheet Metal, INC. | Geneva | FL | — | ◇ UNVERIFIED |
| CWC & W Quality Products Corporation | Owensboro | KY | — | ◇ UNVERIFIED |
| CSCw Seahorn Enterprises LTD | Houston | TX | — | ◇ UNVERIFIED |
| CECWS Enterprises LLC | New Richmond | WI | — | ◇ UNVERIFIED |
| CMCygnet Manufacturing CO. INC | Oaks | PA | — | ◇ UNVERIFIED |
| CFCyncal Fabricators Inc | Bay Shore | NY | — | ◇ UNVERIFIED |
| CICyphert Industries, INC. | Westover | WV | — | ◇ UNVERIFIED |
| CGCyprian Group, LLC | Spencer | IN | — | ◇ UNVERIFIED |
| DFDabar Fab CO | Vero Beach | FL | — | ◇ UNVERIFIED |
| DEDade Engineering Group LLC | Miami | FL | — | ◇ UNVERIFIED |
| DUDaeil USA Corporation | Valley | AL | — | ◇ UNVERIFIED |
| DID'agostino Iron Works | East Rochester | NY | — | ◇ UNVERIFIED |
| DMDaher-tli Manufacturing | Abingdon | VA | — | ◇ 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 |
| DIDaktronics INC | Redwood Falls | MN | — | ◇ UNVERIFIED |
| DIDalco Industries | Billings | MT | — | ◇ UNVERIFIED |
| DIDalco Industries, INC. | Denver | CO | — | ◇ UNVERIFIED |
| DMDalco Machining, INC. | Platteville | WI | — | ◇ UNVERIFIED |
| DBDale Brisco INC. | Fowler | CA | — | ◇ UNVERIFIED |
| DMDal Machine INC | Otsego | MN | — | ◇ UNVERIFIED |
| DIDalsin Industries INC | Bloomington | MN | — | ◇ UNVERIFIED |
| DIDaltech, INC. | Hanover Township | PA | — | ◇ UNVERIFIED |
| DEDalusong Engineering INC | San Carlos | CA | — | ◇ UNVERIFIED |
| DMD&a Metal Fabrication INC | Van Nuys | CA | — | ◇ UNVERIFIED |
| DODam Operating Co. LLC | Muskegon | MI | — | ◇ UNVERIFIED |
| DPD&B Property, LLC | Hudson | MA | — | ◇ UNVERIFIED |
| DLDamtech LLC | Bayfield | CO | — | ◇ UNVERIFIED |
| DDDan Dee Air INC. | Hutchinson | KS | — | ◇ UNVERIFIED |
 Dane Manufacturing | Waunakee | WI | — | ◇ UNVERIFIED |
| DADaniel Alfred Candelaria, an Individual | Lathrop | CA | — | ◇ UNVERIFIED |
| DLDaniel Lang | Roseburg | OR | — | ◇ UNVERIFIED |
| DLDaniels' Louver & Sheet Metal Company, INC. | Mobile | AL | — | ◇ UNVERIFIED |
| DSDaniels Sheet Metal | Orange Beach | AL | — | ◇ UNVERIFIED |
| DEDan-kar Engineering LLC | Woburn | MA | — | ◇ UNVERIFIED |
| DMDannel Machine Company | Dalton | GA | — | ◇ UNVERIFIED |
| DMDanny Music Sheet Metal | Lilburn | GA | — | ◇ UNVERIFIED |
| DRDan Ray Machine Company | Haverhill | MA | — | ◇ UNVERIFIED |
| DCDan's Custom Sheet Metal,inc. | Naples | FL | — | ◇ UNVERIFIED |
| DSDan's Steel Company | Salem | OR | — | ◇ UNVERIFIED |
