| MDM&g Duravent, INC. | Albany | NY | — | ◇ UNVERIFIED |
| MHM & H Metal Specialties INC | Irving | TX | — | ◇ UNVERIFIED |
| MHM & H Metal Specialties, INC. | Dallas | TX | — | ◇ UNVERIFIED |
| MHMiba Hydramechanica Corporation | Sterling Hts | MI | — | ◇ UNVERIFIED |
| MAMichael A. Melton (EPC) | Shelby | NC | — | ◇ UNVERIFIED |
| MMMicra Manufacturing | Hugo | MN | — | ◇ UNVERIFIED |
| MMMicro Metals | Colorado Springs | CO | — | ◇ UNVERIFIED |
| MAMid America Precision Products | Stella | MO | — | ◇ UNVERIFIED |
| MLMidget Louver | Milford | CT | — | ◇ UNVERIFIED |
| MMMid-ohio Mechanical, INC. | Columbus | OH | — | ◇ UNVERIFIED |
| MSMid State Fabricating INC | Blaine | MN | — | ◇ UNVERIFIED |
| MAMidwest Awnings, INC. | Cameron | IL | — | ◇ UNVERIFIED |
 Midwest Fabrication & Supply LLC Dba Superior Air | Zumbrota | MN | — | ◇ UNVERIFIED |
| MIMidwest Industrial Metals | Northlake | IL | — | ◇ UNVERIFIED |
| MKMidwest Knifemaker LLC | Mankato | MN | — | ◇ UNVERIFIED |
| MMMidwest Manufacturing and Distributing, INC. Dba Midwest Metal Forming | Chicago | IL | — | ◇ UNVERIFIED |
| MMMidwest Metal Works, Inc. | New Albany | IN | — | ◇ UNVERIFIED |
| MDMike & Den Property Management, LLC | Louisville | KY | — | ◇ UNVERIFIED |
| MMMi-kee-tro Metal Manufacturing, INC. | York | PA | — | ◇ UNVERIFIED |
| MRMike Ray Manufacturing, INC. | Spring | TX | — | ◇ UNVERIFIED |
| MFMikes Fabricating Incorporated | Moody | AL | — | ◇ UNVERIFIED |
| MWMillers Welding and Fabrication INC | West Point | KY | — | ◇ UNVERIFIED |
| MPMinden Plant | Minden | NV | — | ◇ UNVERIFIED |
| MSMinneapolis Sheeet Metal INC | New Brighton | MN | — | ◇ UNVERIFIED |
| MSMississippi Steel Processing, LLC | Columbus | MS | — | ◇ UNVERIFIED |
| MMMitten Metal LLC | Hemlock | MI | — | ◇ UNVERIFIED |
| MSMixer Sheet Metal INC | Clackamas | OR | — | ◇ UNVERIFIED |
| MSMixer Sheet Metal INC | Portland | OR | — | ◇ UNVERIFIED |
| MIMj Industries | Georgetown | MA | — | ◇ UNVERIFIED |
| MCMk Custom Fabrication | Elizabeth | CO | — | ◇ UNVERIFIED |
| MLM L P Mfg INC | Spring Lake | MI | — | ◇ UNVERIFIED |
| MMM & M Extendo LLC | Boise | ID | — | ◇ UNVERIFIED |
| MMM & M EXTENDO LLC dba Extendo Bed | Eagle | ID | — | ◇ UNVERIFIED |
| MMM & M Manufacturing | Fort Worth | TX | — | ◇ UNVERIFIED |
| MMM & M Mfg | Garland | TX | — | ◇ UNVERIFIED |
| MSMmp Sheet Metal INC | La Habra | CA | — | ◇ UNVERIFIED |
| MMM & M Sheet Metal and Rain Gutters | Canyon Country | CA | — | ◇ UNVERIFIED |
| MIMndustries, INC. | Suwanee | GA | — | ◇ UNVERIFIED |
| MVModern-aire Ventilating INC | North Hollywood | CA | — | ◇ UNVERIFIED |
| MSModern Solutions of Bay County, INC. | Panama City | FL | — | ◇ UNVERIFIED |
| MTModern Tool INC | Coon Rapids | MN | — | ◇ UNVERIFIED |
| MMModular Metal Fabricators INC | Moreno Valley | CA | — | ◇ UNVERIFIED |
| MIModutek International LLC | Soperton | GA | — | ◇ UNVERIFIED |
| MOM - O Fabricating INC | Rice | MN | — | ◇ UNVERIFIED |
| MEMold Eliminators of Florida, INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| MTMolding Technologies, INC | Hebron | OH | — | ◇ UNVERIFIED |
| MHMonarch HVAC | Grand Rapids | MI | — | ◇ UNVERIFIED |
| MMMonarch Metal Manufacturing, INC. | Denver | CO | — | ◇ UNVERIFIED |
| MMMongoose Metals INC | Salem | OR | — | ◇ UNVERIFIED |
| MPMonroe Piping & Sheet Metal | Webster | NY | — | ◇ UNVERIFIED |
| MMMoonlight Manufacturing, INC. | Jurupa Valley | CA | — | ◇ UNVERIFIED |
| MDMoore Dp, LLC | Lexington | KY | — | ◇ UNVERIFIED |
| MMMoreng Metal Products | Totowa | NJ | — | ◇ UNVERIFIED |
| MSMountain States Sheet Metal | Pueblo | CO | — | ◇ UNVERIFIED |
| MTMountain Tarp | Middlesboro | KY | — | ◇ UNVERIFIED |
| MIMrl Industries | Itasca | IL | — | ◇ UNVERIFIED |
| MIMrs Industrial, INC | Columbus | OH | — | ◇ UNVERIFIED |
| MIMsm Industries Incorporated | North Reading | MA | — | ◇ UNVERIFIED |
| MSMsm Sheet Metal | Sparks | NV | — | ◇ UNVERIFIED |
| MCMssm CORP | Pueblo Area | CO | — | ◇ UNVERIFIED |
| MPMtg Precision Sheet Metal | Pembroke | MA | — | ◇ UNVERIFIED |
| MHMTN Holdings LLC | Dover | NH | — | ◇ UNVERIFIED |
| MDMunters Des Champs | Buena Vista | VA | — | ◇ UNVERIFIED |
| 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 |
| NHNault Holdings, LLC | Quinnesec | MI | — | ◇ 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 |
| NTNew Tent Manufacturing LLC | Green Bay | WI | — | ◇ UNVERIFIED |
| NINexcoil INC | Riverside | CA | — | ◇ UNVERIFIED |
| NSNGC Sheetmetal And More LLC | Hyde Park | MA | — | ◇ UNVERIFIED |
| NGNic Global Manufacturing Solutions | Gallatin | TN | — | ◇ UNVERIFIED |
| NGNic Global Manufacturing Solutions | Woodinville | WA | — | ◇ 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 |
