| MFMurray Fabrication Facility | Murray | UT | — | ◇ UNVERIFIED |
| MIMurton INC. | Cleveland | OH | — | ◇ UNVERIFIED |
| MMMushro Machine & Tool Works, Inc. | Streator | IL | — | ◇ UNVERIFIED |
| MMMusic's Metal Works, LLC. | Dayton | OH | — | ◇ UNVERIFIED |
| MMMuskogee Metal Fabricators, INC. | Muskogee | OK | — | ◇ UNVERIFIED |
| MMMust Machining & Fabrication LLC | Saint Helena | CA | — | ◇ UNVERIFIED |
| MIMutual Industries INC | Seattle | WA | — | ◇ UNVERIFIED |
| MM+v | El Paso | TX | — | ◇ UNVERIFIED |
| MIMVB Industries, Inc. | Deerfield Beach | FL | — | ◇ UNVERIFIED |
| MIMwi INC | Minneapolis | MN | — | ◇ UNVERIFIED |
| MWM & W Manufacturing INC | Iola | KS | — | ◇ UNVERIFIED |
| MSMW Solutions LLC | Defiance | OH | — | ◇ UNVERIFIED |
| MDMyers Di Corporation | Barnegat | NJ | — | ◇ UNVERIFIED |
| MFMyers Fabrication INC | Eugene | OR | — | ◇ UNVERIFIED |
| MFMyhr Fabrication INC | Alexandria | MN | — | ◇ UNVERIFIED |
| MEMystique Engineering & Manufac | Marysville | WA | — | ◇ UNVERIFIED |
| NWNaff Welding INC | Henry | VA | — | ◇ UNVERIFIED |
| NINailor Industries Houston Facility | Houston | TX | — | ◇ UNVERIFIED |
| NINailor Industries of Texas INC. | North Las Vegas | NV | — | ◇ UNVERIFIED |
| NANapa Auto Parts | Grove City | OH | — | ◇ UNVERIFIED |
| NSNarito Sheetmetal & Mechanical Corporation | Waipahu | HI | — | ◇ UNVERIFIED |
| NFNash Fabricators INC | Vista | CA | — | ◇ UNVERIFIED |
| NWNashville Welding - Machine Works, INC. | Wilson | NC | — | ◇ UNVERIFIED |
| NBNational Butane Gas Company, INC. | Memphis | TN | — | ◇ UNVERIFIED |
| NGNational Grinding & Manufacturing LLC | Sun City | AZ | — | ◇ UNVERIFIED |
| NINational Industrial Concepts, INC. | Gallatin | TN | — | ◇ UNVERIFIED |
 National Machinery - Fabrication INC | Rock Hill | SC | — | ◇ UNVERIFIED |
| NONational Oilwell Varco | San Angelo | TX | — | ◇ UNVERIFIED |
| NONational Oilwell Varco INC | Amelia | LA | — | ◇ UNVERIFIED |
| NSNational Shot Peening, INC. | Weatherford | TX | — | ◇ UNVERIFIED |
| NWNational Welding Corporation | Midvale | UT | — | ◇ UNVERIFIED |
| NNNative Nations Procurement Systems INC. | Dallas | TX | — | ◇ UNVERIFIED |
| NMNauman Machine and Design | Zimmerman | MN | — | ◇ UNVERIFIED |
| NPNaval Postgraduate School | Monterey | CA | — | ◇ UNVERIFIED |
| NMNazareth Machine Works INC | Mount Bethel | PA | — | ◇ UNVERIFIED |
| NFNC Fabrication, LLC | Nashville | NC | — | ◇ UNVERIFIED |
| NGNci Group INC. | Rome | NY | — | ◇ UNVERIFIED |
| NGNci Group INC. | Omaha | NE | — | ◇ UNVERIFIED |
| NGNci Group INC. | Marietta | GA | — | ◇ UNVERIFIED |
| NCN C Machine LLC | Casper | WY | — | ◇ UNVERIFIED |
| NSNc Stauffer & Sons, INC. | Factoryville | PA | — | ◇ UNVERIFIED |
| NPNDZ Performance | Cheshire | CT | — | ◇ UNVERIFIED |
| NENeco Engineering INC | Blaine | MN | — | ◇ UNVERIFIED |
| NINedmac INC | Brooklyn Park | MN | — | ◇ UNVERIFIED |
| NHNeil H. Daniels, INC. | Ascutney | VT | — | ◇ UNVERIFIED |
| NSNelsen Sheet Metal INC. | Brigham City | UT | — | ◇ UNVERIFIED |
| NPNelson Precision Turning INC | Bloomington | MN | — | ◇ UNVERIFIED |
| NQNeodesha Quality Machining, INC. | Neodesha | KS | — | ◇ UNVERIFIED |
| NMNettwork Manufacturing INC | Rice | MN | — | ◇ UNVERIFIED |
| NMNetzer Metalcraft,Inc. | Essex | MD | — | ◇ UNVERIFIED |
| NINeufeldt Industrial Services INC Dba Neufab | Red Wing | MN | — | ◇ UNVERIFIED |
| NENeumeier Engineering, Inc. | Federal Way | WA | — | ◇ UNVERIFIED |
| NMNevarez Machining INC | San Jose | CA | — | ◇ UNVERIFIED |
| NNevatronix | Las Vegas | NV | — | ◇ UNVERIFIED |
| NTNewberger Tool & Machine LLC | North Canton | OH | — | ◇ UNVERIFIED |
| NBNew Braunfels Facility | San Antonio | TX | — | ◇ UNVERIFIED |
| NMNewburgh Metals, INC. | Newburgh | NY | — | ◇ UNVERIFIED |
| NCNew Cut Tool and Mfg. CORP. | Shadyside | OH | — | ◇ UNVERIFIED |
| NCNew Cut Tool & Mfg CO. | Shadyside | OH | — | ◇ UNVERIFIED |
| NENew England Laser Processing | Danvers | MA | — | ◇ UNVERIFIED |
| NENew England Stainless Steel Fabrication | Weymouth | MA | — | ◇ UNVERIFIED |
| NMNewEra Manufacturing Inc. | Cedar City | UT | — | ◇ UNVERIFIED |
| NMNewera Mfg | Hildale | UT | — | ◇ UNVERIFIED |
| NINewfield Industries INC. | Tulsa | OK | — | ◇ UNVERIFIED |
| NHNew Hope Machine & Automation, L.l.c. | Tucson | AZ | — | ◇ UNVERIFIED |
| NHNew Horizons Enterprises LLC | San Jose | CA | — | ◇ UNVERIFIED |
| NJNew Joules Engineering INC. | Kansas City | MO | — | ◇ UNVERIFIED |
| NONew Oregon Machine INC | Portland | OR | — | ◇ UNVERIFIED |
| NTNew Tech Industries INC | Mukilteo | WA | — | ◇ UNVERIFIED |
| NVNew Vision Metal Works, INC. | Washington | NC | — | ◇ UNVERIFIED |
| NWNew World Machining INC | San Jose | CA | — | ◇ UNVERIFIED |
| NINexcoil INC | Riverside | CA | — | ◇ UNVERIFIED |
| NINext Innovations LTD | Walker | MN | — | ◇ UNVERIFIED |
| NMNexus Manufacturing LLC | Ham Lake | MN | — | ◇ UNVERIFIED |
| NINft INC. | Golden | CO | — | ◇ UNVERIFIED |
| NSNGC Sheetmetal And More LLC | Hyde Park | MA | — | ◇ UNVERIFIED |
| NMNiagara Manufacturing Company | Erie | PA | — | ◇ UNVERIFIED |
| NPNiagara Precision INC. | Lockport | NY | — | ◇ UNVERIFIED |
| NENicco Engineering INC | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| NGNic Global Manufacturing Solutions | Gallatin | TN | — | ◇ UNVERIFIED |
 Nichols Manufacturing INC | Milpitas | CA | — | ◇ UNVERIFIED |
| NINicks Iron Works, INC | Brooklyn | NY | — | ◇ UNVERIFIED |
| NMNick's Metal Fabricating & Sons, Inc. | Seneca | IL | — | ◇ UNVERIFIED |
| NLNico, LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| NLNicorr LLC | Tippecanoe | IN | — | ◇ UNVERIFIED |
| NMNielsen Metal Manufacturing INC | Maple Grove | MN | — | ◇ UNVERIFIED |
 Nikel Precision Group II, LLC | Warminster | PA | — | ◇ UNVERIFIED |
| NSNimen Sheet Metal, INC. | Saint Clairsville | OH | — | ◇ UNVERIFIED |
| NINinth Inning Corporation | Salem | OR | — | ◇ UNVERIFIED |
| NMNippon Machine Engineering, INC. | Canutillo | TX | — | ◇ UNVERIFIED |
| NSN.j. Sullivan Company INC. | Sterling | VA | — | ◇ UNVERIFIED |
| NENKE Environmental LLC | Keene | NH | — | ◇ UNVERIFIED |
| NEN.L.E. Enterprises Inc. | Newport | DE | — | ◇ UNVERIFIED |
| NMN & M Kuenzi LLC | Salem | OR | — | ◇ UNVERIFIED |
| NCNobis CO INC. | Salt Lake City | UT | — | ◇ UNVERIFIED |
| NMNodelco Manufacturing, INC. | Gilroy | CA | — | ◇ UNVERIFIED |
| NCNomad Chassis, INC. | Jefferson | GA | — | ◇ UNVERIFIED |
| NENo-mar Enterprises | Fenton | MO | — | ◇ UNVERIFIED |
| NMNonmetallic Machinery Assembly, INC. | — | PA | — | ◇ UNVERIFIED |
| NANoorda Architectural Metals INC | Saint George | UT | — | ◇ UNVERIFIED |
