| MFMurray Fabrication Facility | Murray | UT | — | ◇ UNVERIFIED |
| MMMuskogee Metal Fabricators, INC. | Muskogee | OK | — | ◇ UNVERIFIED |
| MIMutual Industries INC | Seattle | WA | — | ◇ UNVERIFIED |
| NINailor Industries Houston Facility | Houston | TX | — | ◇ UNVERIFIED |
| NINailor Industries of Texas INC. | North Las Vegas | NV | — | ◇ UNVERIFIED |
| NSNarito Sheetmetal & Mechanical Corporation | Waipahu | HI | — | ◇ UNVERIFIED |
| NINational Industrial Concepts, INC. | Gallatin | TN | — | ◇ UNVERIFIED |
| NNNative Nations Procurement Systems INC. | Dallas | TX | — | ◇ UNVERIFIED |
| NGNci Group INC. | Rome | NY | — | ◇ UNVERIFIED |
| NGNci Group INC. | Omaha | NE | — | ◇ UNVERIFIED |
| NSNc Stauffer & Sons, INC. | Factoryville | PA | — | ◇ UNVERIFIED |
| NSNelsen Sheet Metal INC. | Brigham City | UT | — | ◇ UNVERIFIED |
| NMNetzer Metalcraft,Inc. | Essex | MD | — | ◇ UNVERIFIED |
| NNevatronix | Las Vegas | NV | — | ◇ UNVERIFIED |
| NBNew Braunfels Facility | San Antonio | TX | — | ◇ UNVERIFIED |
| NMNewburgh Metals, INC. | Newburgh | NY | — | ◇ UNVERIFIED |
| NENew England Stainless Steel Fabrication | Weymouth | MA | — | ◇ UNVERIFIED |
| NINexcoil INC | Riverside | CA | — | ◇ UNVERIFIED |
| NSNGC Sheetmetal And More LLC | Hyde Park | MA | — | ◇ UNVERIFIED |
| NGNic Global Manufacturing Solutions | Woodinville | WA | — | ◇ UNVERIFIED |
| NGNic Global Manufacturing Solutions | Gallatin | TN | — | ◇ UNVERIFIED |
| NLNicorr LLC | Tippecanoe | IN | — | ◇ UNVERIFIED |
| NMNielsen Metal Manufacturing INC | Maple Grove | MN | — | ◇ UNVERIFIED |
| NSNimen Sheet Metal, INC. | Saint Clairsville | OH | — | ◇ UNVERIFIED |
| NINinth Inning Corporation | Salem | OR | — | ◇ UNVERIFIED |
| NENKE Environmental LLC | Keene | NH | — | ◇ UNVERIFIED |
| NMNodelco Manufacturing, INC. | Gilroy | CA | — | ◇ UNVERIFIED |
| NNNoll Norwesco LLC | Fife | WA | — | ◇ UNVERIFIED |
| NANoorda Architectural Metals INC | Saint George | UT | — | ◇ UNVERIFIED |
| NMNor-cal Metal Fabricators | Oakland | CA | — | ◇ UNVERIFIED |
| NPNorco Precision INC | Maple Grove | MN | — | ◇ UNVERIFIED |
| NSNorco Sheet Metal | Oakland | CA | — | ◇ UNVERIFIED |
| NANorth American Kitchen Solutions, INC. | Venus | TX | — | ◇ UNVERIFIED |
| NANorth American Kitchen Solutions, INC. | Eastlake | OH | — | ◇ UNVERIFIED |
| NANorth American Metals INC | Banks | OR | — | ◇ UNVERIFIED |
| NCNorth Coast Steel | San Francisco | CA | — | ◇ UNVERIFIED |
| NMNortheastern Metals, LLC | Greenfield | MA | — | ◇ UNVERIFIED |
| NTNorthern Tool - Equipment Company INC | Faribault | MN | — | ◇ UNVERIFIED |
| NFNorth Fork Mechanical & Fabrication, LLC | Saint Louisville | OH | — | ◇ UNVERIFIED |
| NINorthpost INC | Ogilvie | MN | — | ◇ UNVERIFIED |
| NSNorthside Sheet Metal, INC. | Panama City | FL | — | ◇ UNVERIFIED |
| NTNorthside Tin Shop | Chattanooga | TN | — | ◇ UNVERIFIED |
| NSNorthwest Specialty Fab LLC | Central Point | OR | — | ◇ UNVERIFIED |
| NPNowak Properties, LLC | Punta Gorda | FL | — | ◇ UNVERIFIED |
| NINsa Industries LLC | Saint Johnsbury | VT | — | ◇ UNVERIFIED |
| NSN & S Supply | Milton | NY | — | ◇ UNVERIFIED |
| NINu-way Industries INC | Des Plaines | IL | — | ◇ UNVERIFIED |
| OHOccupational Health & Safety Administration | Idaho Falls | ID | — | ◇ UNVERIFIED |
| OCOCSM Capital, LLC | Anaheim | CA | — | ◇ UNVERIFIED |
| OGOde Gutter Products | Kent | WA | — | ◇ UNVERIFIED |
