| NGNci Group INC. | Marietta | GA | — | ◇ UNVERIFIED |
| NGNci Group, INC | Lubbock | TX | — | ◇ UNVERIFIED |
| NGNci Group, INC | Mattoon | IL | — | ◇ UNVERIFIED |
| NMNefi Morales and Julie A. Ramos | Maywood | CA | — | ◇ UNVERIFIED |
| NHNeil H. Daniels, INC. | Ascutney | VT | — | ◇ UNVERIFIED |
| NMNeilson Manufacturing | Tulsa | OK | — | ◇ UNVERIFIED |
| NCNello Corporation B2 | South Bend | IN | — | ◇ UNVERIFIED |
| NINelson Iron Works | Seattle | WA | — | ◇ UNVERIFIED |
| NUNeoplan USA CORP | Lamar | CO | — | ◇ UNVERIFIED |
| NHNepturne Heat Treating, INC. | Corpus Christi | TX | — | ◇ UNVERIFIED |
| NINeufeldt Industrial Services INC Dba Neufab | Red Wing | MN | — | ◇ UNVERIFIED |
| NCNeumetal Corporation | New London | WI | — | ◇ UNVERIFIED |
| NPNevada Precision Sheet Metal, INC. | Las Vegas | NV | — | ◇ UNVERIFIED |
| NSNevada Steel Services LLC | Sparks | NV | — | ◇ UNVERIFIED |
| NANew Age Steel Products, INC. | Brooklyn | NY | — | ◇ UNVERIFIED |
| NBNew Beginnings Enterprise INC. | Richmond | VA | — | ◇ UNVERIFIED |
| NTNewberry Tanks and Equipment, LLC | Memphis | TN | — | ◇ UNVERIFIED |
| NCNew Century Plaza | Los Angeles | CA | — | ◇ UNVERIFIED |
| NINewco Industries LLC Dba Nex Solutions | Litchfield | MI | — | ◇ UNVERIFIED |
| NENew England Bridge Products INC. | Lynn | MA | — | ◇ UNVERIFIED |
| NENew England Cage and Fence CORP | Windsor | CT | — | ◇ UNVERIFIED |
| NENew England Copperworks, INC. | Smithfield | RI | — | ◇ UNVERIFIED |
| NENew England Inspection, INC. | South Portland | ME | — | ◇ UNVERIFIED |
| NINewfield Industries INC. | Tulsa | OK | — | ◇ UNVERIFIED |
| NJNew Jersey Boom & Erectors | Henryville | PA | — | ◇ UNVERIFIED |
| NMNew Millenium Building Systems | Continental | OH | — | ◇ UNVERIFIED |
| NMNew Millennium Building System S INC | Florence | SC | — | ◇ UNVERIFIED |
| NNNewport News Shipbldg Oyster Pt Industrial Pk Opip | Newport News | VA | — | ◇ UNVERIFIED |
| NNNewport News Shipbuilding Oakland Industrial Oip | Newport News | VA | — | ◇ UNVERIFIED |
| NSNew Steel, INC. | Omaha | NE | — | ◇ UNVERIFIED |
| NRNexGen Rebar LLC | Harrisonburg | VA | — | ◇ UNVERIFIED |
| NGNext Generation Construction, LLC | New York | NY | — | ◇ UNVERIFIED |
| NLNext Level Metal | Baldwin | IL | — | ◇ UNVERIFIED |
| NGNGM Glass Metals, LLC | Woodbridge | VA | — | ◇ UNVERIFIED |
| NFNiagara Frontier Custom Fabrication, INC. | Buffalo | NY | — | ◇ UNVERIFIED |
| NPNichols Propeller Company | Greenville | MS | — | ◇ UNVERIFIED |
| NMNick's Metal Fabricating & Sons, INC. | Chicago | IL | — | ◇ UNVERIFIED |
| NWNiermann Weeks Company, INC | Millersville | MD | — | ◇ UNVERIFIED |
| NMNix Metals Fabrication Building Expansion | Poseyville | IN | — | ◇ UNVERIFIED |
| NJN J Mccutchen INC | Stockton | CA | — | ◇ UNVERIFIED |
| NCNooter Corp-nooter CORP | Saint Louis | MO | — | ◇ UNVERIFIED |
| NCNooter Corporation | Saint Louis | MO | — | ◇ UNVERIFIED |
 North Alabama Fabricating Company, INC. | Cullman | AL | — | ◇ UNVERIFIED |
| North Alabama Fabricating Company, INC. | Glen Allen | AL | — | ◇ UNVERIFIED |
| NANorth American Construction Services, LLC | Birmingham | AL | — | ◇ UNVERIFIED |
| NANorth American Construction Services, LTD. | Birmingham | AL | — | ◇ UNVERIFIED |
| NCNorth Chicago Iron Works, INC. | North Chicago | IL | — | ◇ UNVERIFIED |
| NCNorth Coast Tool, INC. | Erie | PA | — | ◇ UNVERIFIED |
| NSNortheast Sheet Metal LLC | Hoboken | NJ | — | ◇ UNVERIFIED |
| NCNorthern California Framing & Carpentry, INC. | Ripon | CA | — | ◇ UNVERIFIED |
