| NINailor Industries Houston Facility | Houston | TX | — | ◇ UNVERIFIED |
| NINailor Industries of Texas INC. | North Las Vegas | NV | — | ◇ UNVERIFIED |
| NCNamasco Corporation | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| NMN.a. Metal Services INC. | Rockland | MA | — | ◇ UNVERIFIED |
| NMNano Manufacturing INC | North Branch | MN | — | ◇ UNVERIFIED |
| NCNapa County Roads | Napa | CA | — | ◇ UNVERIFIED |
| NSNarito Sheetmetal & Mechanical Corporation | Waipahu | HI | — | ◇ UNVERIFIED |
 Nashville Fabrication and Engineering Limited Partnership | Nashville | TN | — | ◇ UNVERIFIED |
| NSNashville Sheet Metal, LLC | Lebanon | TN | — | ◇ UNVERIFIED |
| NCNational Chimney Kentucky LLC Dba Magnaflex | Mount Sterling | KY | — | ◇ UNVERIFIED |
| NENational Eastern Corporation | Plainville | CT | — | ◇ UNVERIFIED |
| NFNational Frame Rail | Sanger | TX | — | ◇ UNVERIFIED |
| NINational Industrial Concepts, INC. | Gallatin | TN | — | ◇ UNVERIFIED |
| NMNational Maintenance Contracting CORP. | Niagara Falls | NY | — | ◇ UNVERIFIED |
| NMNational Metal Fabrication INC | Ontario | CA | — | ◇ UNVERIFIED |
| NMNational Metal Fabrication,j. Delvillar | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| NONational Ordnance Automotive Manufacturing LLC | Auburn Hills | MI | — | ◇ UNVERIFIED |
| NPNational Products INC 1025 S Elmgrove St | Seattle | WA | — | ◇ UNVERIFIED |
| NPNational Products S Elmgrove | Seattle | WA | — | ◇ UNVERIFIED |
| NSNational Sintered Alloys Incorporated | Clinton | CT | — | ◇ UNVERIFIED |
| NSNational Sintered Alloys Incorporated | Clinton | CT | — | ◇ UNVERIFIED |
| NNNative Nations Procurement Systems INC. | Dallas | TX | — | ◇ UNVERIFIED |
| NFNavarre Fabrication, INC. | Lafayette | LA | — | ◇ UNVERIFIED |
| NSNavasota Site | Navasota | TX | — | ◇ UNVERIFIED |
| NHNb Handy | Lynchburg | VA | — | ◇ UNVERIFIED |
| NDN.c. Dac - Correction Enterprises (franklin) Sign Plant | Bunn | NC | — | ◇ UNVERIFIED |
| NCNch Corporation | Lancaster | TX | — | ◇ UNVERIFIED |
| NGNci Group INC. | Omaha | NE | — | ◇ UNVERIFIED |
| NGNci Group INC. | Rome | NY | — | ◇ UNVERIFIED |
| NGNci Group, INC | Mattoon | IL | — | ◇ UNVERIFIED |
| NGNci Group, INC | Lubbock | TX | — | ◇ UNVERIFIED |
| NMNc Manufacturing | Crestview | FL | — | ◇ UNVERIFIED |
| NSNc Stauffer & Sons, INC. | Factoryville | PA | — | ◇ UNVERIFIED |
| NCNeapco Components | Beatrice | NE | — | ◇ UNVERIFIED |
| NMNefi Morales and Julie A. Ramos | Maywood | CA | — | ◇ UNVERIFIED |
| NMNeilson Manufacturing | Tulsa | OK | — | ◇ UNVERIFIED |
| NINelco, INC. | Los Angeles | CA | — | ◇ UNVERIFIED |
| NCNello Corporation B2 | South Bend | IN | — | ◇ UNVERIFIED |
| NSNelsen Sheet Metal INC. | Brigham City | UT | — | ◇ UNVERIFIED |
| NANelson Avenue | Concord | CA | — | ◇ UNVERIFIED |
| NGNelson Global Products | Greenwood | IN | — | ◇ UNVERIFIED |
| NINelson Iron Works | Seattle | WA | — | ◇ UNVERIFIED |
| NWNelson Williams Linings INC | Mountain Iron | MN | — | ◇ UNVERIFIED |
| NFNeo Fab LLC / Neo Fab Metal Fabrication Facility | Miami | OK | — | ◇ UNVERIFIED |
| NHNepturne Heat Treating, INC. | Corpus Christi | TX | — | ◇ UNVERIFIED |
| NMNetzer Metalcraft,Inc. | Essex | MD | — | ◇ 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 |
