| LILisega, INC. | Kodak | TN | — | ● ACTIVE |
Loc Industries INC | Warren | MI | — | ● ACTIVE |
Lockheed Martin Corporation | Pinellas Park | FL | — | ● ACTIVE |
Lodolce Machine Co, INC | Saugerties | NY | — | ● ACTIVE |
| LMLomont Molding Incorporated | Mount Pleasant | IA | 100–499 | ● ACTIVE |
Lukach Interiors INC | Clifton | NJ | — | ● ACTIVE |
Lyall Turbosonics, INC. | Lake Forest | CA | — | ● ACTIVE |
Mac Cal CO | San Jose | CA | — | ● ACTIVE |
Macias Sheet Metal | Los Angeles | CA | — | ● ACTIVE |
| MMMaclean Mallard LLC | Sterling | IL | 100–499 | ● ACTIVE |
Magic Metals, INC. | Union Gap | WA | — | ● ACTIVE |
| MCMagna-matic CORP | Waldo | WI | — | ● ACTIVE |
Mantec Services INC | Saint Charles | IL | — | ● ACTIVE |
Manufacturing Solutions, INC | Morrisville | VT | 100–499 | ● ACTIVE |
| MTMapp Technologies, L.l.c. | Joplin | MO | 100–499 | ● ACTIVE |
Marlon INC | Boise | ID | — | ● ACTIVE |
Marsh Industrial Services, INC. | Kalkaska | MI | — | ● ACTIVE |
Mass Precision, INC. | San Jose | CA | — | ● ACTIVE |
Master Metal Products Company | San Jose | CA | — | ● ACTIVE |
Matrix Plastic Products INC | Wood Dale | IL | 100–499 | ● ACTIVE |
May Cabinets, Incorporated | Glassboro | NJ | 20–99 | ● ACTIVE |
| MCMbi Construction Services INC | Yakima | WA | — | ● ACTIVE |
Mcalpin Industries INC. | Rochester | NY | — | ● ACTIVE |
Mcclarin Plastics, LLC | Hanover | PA | — | ● ACTIVE |
Mcdonald Air & Sheet Metal INC. | Orlando | FL | 20–99 | ● ACTIVE |
Mcgill Airflow LLC | Fountain Inn | SC | 20–99 | ● ACTIVE |
Mercury Aircraft INC | Hammondsport | NY | 100–499 | ● ACTIVE |
Merit3d, LLC | Price | UT | — | ● ACTIVE |
Merlin Mold & Manufacturing INC | Canastota | NY | — | ● ACTIVE |
Meta Fab, INC | Hillsboro | OR | — | ● ACTIVE |
Metalcrafters, INC. | Methuen | MA | 20–99 | ● ACTIVE |
Metalcraft, INC | Baltimore | MD | 20–99 | ● ACTIVE |
| MOMetalcraft of Mayville INC | Mayville | WI | 100–499 | ● ACTIVE |
Metal Improvement Company, LLC | Addison | IL | — | ● ACTIVE |
Metallion Industries, INC. | Estacada | OR | — | ● ACTIVE |
Metal Roofing Systems INC | Stanley | NC | — | ● ACTIVE |
Meva Formwork Systems INC | Springfield | OH | — | ● ACTIVE |
| MRMeyercord Revenue INC | Carol Stream | IL | 20–99 | ● ACTIVE |
| MPMicro-dimensional Products INC | Norristown | PA | — | ● ACTIVE |
| MPMicron Products INC | Fitchburg | MA | 20–99 | ● ACTIVE |
| MQMicro Q, INC | San Diego | CA | — | ● ACTIVE |
Mid-america Taping & Reeling INC | Glendale Heights | IL | — | ● ACTIVE |
Mid-continent Engineering, LLC | Minneapolis | MN | — | ● ACTIVE |
Midgard INC | Green Lane | PA | — | ● ACTIVE |
| MTMid-state Tank CO INC | Sullivan | IL | — | ● ACTIVE |
Midwest Engineered Systems, INC. | Waukesha | WI | 100–499 | ● ACTIVE |
| MPMidwest Precision Molding, INC | Lake Geneva | WI | 20–99 | ● ACTIVE |
Mikron Manufacturing, INC. | Colorado Springs | CO | — | ● ACTIVE |
| MEMikros Engineering, INC | Brooklyn Park | MN | 100–499 | ● ACTIVE |
Mil-bar Plastics, INC. | Corona | CA | — | ● ACTIVE |
Milford Enterprises, INC | Quakertown | PA | 20–99 | ● ACTIVE |
Millennium Metalcraft, INC. | Fremont | CA | — | ● ACTIVE |
Milton Manufacturing, INC. | Detroit | MI | — | ● ACTIVE |
Milton, Vermont Sheet Metal, INC | Milton | VT | — | ● ACTIVE |
Minerva Welding and Fabricating, INC. | Minerva | OH | — | ● ACTIVE |
| MAMingo Aerospace | Owasso | OK | 100–499 | ● ACTIVE |
Minnysonoda CORP | Monroe | WA | 20–99 | ● ACTIVE |
Mississippi Valley Metals LLC | Maquoketa | IA | — | ● ACTIVE |
Mjm Manufacturing INC | Miami Lakes | FL | — | ● ACTIVE |
M-l Utilities LLC | Spring Hill | TN | — | ● ACTIVE |
M & M Industries, INC. | Chattanooga | TN | — | ● ACTIVE |
Mocap LLC | Park Hills | MO | — | ● ACTIVE |
Modern Mold and Tool, INC. | Pittsfield | MA | — | ● ACTIVE |
Modula INC | Franklin | OH | 100–499 | ● ACTIVE |
Mold-a-matic CORP | Oneonta | NY | — | ● ACTIVE |
Molding Concepts INC | Sterling Heights | MI | — | ● ACTIVE |
Moldtronics INC | Downers Grove | IL | — | ● ACTIVE |
Montana Fabrication Works LLC | Stevensville | MT | 20–99 | ● ACTIVE |
Montana Fiberglass INC | Lewistown | MT | — | ● ACTIVE |
Montrose Molders CORP | Piscataway | NJ | 100–499 | ● ACTIVE |
Mortensen Woodwork INC | Union City | GA | — | ● ACTIVE |
Mountain Vista System Solutions LLC | Tijeras | NM | — | ● ACTIVE |
Murray's Sheet Metal Company INC | Parkersburg | WV | — | ● ACTIVE |
Nabco Entrances, INC. | Muskego | WI | 100–499 | ● ACTIVE |
Naimor INC | Snohomish | WA | — | ● ACTIVE |
| NPNakoma Products, LLC | Bridgeview | IL | — | ● ACTIVE |
| NNNalge Nunc International Corporation | Rochester | NY | — | ● ACTIVE |
National Metal Stampings, INC | Lancaster | CA | — | ● ACTIVE |
National Plastics and Seals, INC. | Schaumburg | IL | — | ● ACTIVE |
Naztec International Group LLC | West Palm Beach | FL | — | ● ACTIVE |
Nema Enclosures Manufacturing of Texas LLC | Houston | TX | — | ● ACTIVE |
Neu Custom Packaging LLC | Englewood | FL | — | ● ACTIVE |
New Bedford Technology, LLC | Worthington | MN | — | ● ACTIVE |
New Process Fibre CO | Greenwood | DE | — | ● ACTIVE |
New Step Orthotic Lab, INC. | Maryville | IL | — | ● ACTIVE |
| NSNoble Supply & Logistics, LLC | Holly Springs | MS | — | ● ACTIVE |
Nona Technologies, INC | Somerville | MA | — | ● ACTIVE |
Norco Plastics, INC | Chino | CA | — | ● ACTIVE |
Nor-fab Manufacturing INC | Gladstone | MI | — | ● ACTIVE |
| NFNorrisbuilt Fabrication and Mobile Welding, LLC | Norton | VA | 20–99 | ● ACTIVE |
North American Manufacturing Company, LLC | Scranton | PA | — | ● ACTIVE |
Novelty Manufacturing CO. | Lancaster | PA | — | ● ACTIVE |
N W D, INC. | Grants Pass | OR | — | ● ACTIVE |
Nylacarb CORP | Vero Beach | FL | 20–99 | ● ACTIVE |
Oak Ridge Products, LLC | Mchenry | IL | — | ● ACTIVE |
Observa-dome Laboratories, INC. | Jackson | MS | — | ● ACTIVE |
Ocean State Composites LLC | Bristol | RI | 20–99 | ● ACTIVE |
Odin Fabrication, INC. | Elburn | IL | — | ● ACTIVE |
| OPO.e.m. Precision LLC | Stanton | CA | — | ● ACTIVE |
Oertel Metal Works, INC. | Davenport | IA | 20–99 | ● ACTIVE |