| MMMmj Machining and Fabricating, INC. | Randleman | NC | — | ◇ UNVERIFIED |
| MMM & M Machining | Salinas | CA | — | ◇ UNVERIFIED |
| MQM&m Quality Grinding | Hodgkins | IL | — | ◇ UNVERIFIED |
| MMM & M Tooling Inc | Patillas | PR | — | ◇ UNVERIFIED |
| MNM & N Alloy Cast Products, INC. | Sylacauga | AL | — | ◇ UNVERIFIED |
| MIModacam, Incorporated | Denver | NC | — | ◇ UNVERIFIED |
 Modern Machine and Metal Fabricators, INC. | Winston Salem | NC | — | ◇ UNVERIFIED |
| MMModern Machinery CO | Bay City | MI | — | ◇ UNVERIFIED |
| Modern Machine Shop, INC. | Laredo | TX | — | ◇ UNVERIFIED |
 Modern Machine Works, INC. | Bismarck | ND | — | ◇ UNVERIFIED |
| MPModern Pattern & Foundry CO. INC. (mp) | Vernon | CA | — | ◇ UNVERIFIED |
| MCModular Concepts INC | Burnsville | MN | — | ◇ UNVERIFIED |
| MBMoenter Bilt Performance Engineering, LLC | Woodville | OH | — | ◇ UNVERIFIED |
| MMMolalla Machine Shop INC | Molalla | OR | — | ◇ UNVERIFIED |
| MMMolenda Machining | Concord | CA | — | ◇ UNVERIFIED |
| MMMonalex Manufacturing, INC. | Douglas | MA | — | ◇ UNVERIFIED |
| MMMonett Metals Inc-monett Steel Castings | Monett | MO | — | ◇ UNVERIFIED |
| MMMonovision Machine, LLC | Massillon | OH | — | ◇ UNVERIFIED |
| MCMonroe Custom Utility Bodies, INC. | Greenfield | IN | — | ◇ UNVERIFIED |
| MMMonroe Mold LLC | Monroe | MI | — | ◇ UNVERIFIED |
| MMMontague Machine CO | Montague (turners Falls) | MA | — | ◇ UNVERIFIED |
| MTMontague Tool and Manufacturing Company | Clio | MI | — | ◇ UNVERIFIED |
| MIMonti INC. Santa Teresa Plant | Santa Teresa | NM | — | ◇ UNVERIFIED |
| MFMoody Fabrication & Machine, INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| MIMooney Industries Precision Machining | Canoga Park | CA | — | ◇ UNVERIFIED |
| MMMorales Motorsports | Daly City | CA | — | ◇ UNVERIFIED |
| MMMorford Managers, LLC | Edgewood | NM | — | ◇ UNVERIFIED |
| MIMorlin, INC. | Erie | PA | — | ◇ UNVERIFIED |
| MBMorris Building LLC | Loveland | CO | — | ◇ UNVERIFIED |
| MMMorris Machine & Welding, INC. | Baxley | GA | — | ◇ UNVERIFIED |
| MCMorrison Custom Welding, INC. | Wooster | OH | — | ◇ UNVERIFIED |
| MEMorrison Engineering & Machining INC | Tualatin | OR | — | ◇ UNVERIFIED |
| MIMote INC Dba Allen Company | Minnetonka | MN | — | ◇ UNVERIFIED |
| MSMotive Systems Engineering CORP | Rancho Cordova | CA | — | ◇ UNVERIFIED |
| MTMotorsport Tech, INC. | Sparks | NV | — | ◇ UNVERIFIED |
| MTMotorsport Tech, INC. | Reno | NV | — | ◇ UNVERIFIED |
| MMMoundville Metal Works, INC | Moundville | AL | — | ◇ UNVERIFIED |
| MFMountaineer Fabricators INC | Nitro | WV | — | ◇ UNVERIFIED |
| MMMountaineer Machine & Hydraulics, INC. | Athens | WV | — | ◇ UNVERIFIED |
| MTMountain Town Machine CORP | Mount Sterling | KY | — | ◇ UNVERIFIED |
| MZMount Zion Machine LLC | Morgantown | IN | — | ◇ UNVERIFIED |
| MHMowdy Holdings LLC | Duncan | OK | — | ◇ UNVERIFIED |
| MCMpg Casting Technologies | Kingsford | MI | — | ◇ UNVERIFIED |
| MGMp & G Machine & Design, INC. | Lewiston | ME | — | ◇ UNVERIFIED |
| MPM. P. H. Industries, INC. | Gainesville | FL | — | ◇ UNVERIFIED |
| MRM Rodrigue & Son INC - Vacherie Plant | Vacherie | LA | — | ◇ UNVERIFIED |
| MPMr. Pin, Inc | Minneapolis | MN | — | ◇ UNVERIFIED |
| MSM - S Automated Feeding Systems INC | Burnsville | MN | — | ◇ UNVERIFIED |
| MLMsjc, LLC | Village of Menomonee Falls | WI | — | ◇ UNVERIFIED |
| MTMSK Tool & Die, Inc. | Avon Lake | OH | — | ◇ UNVERIFIED |
| MPM&S Precision Machine Co. | Queensbury | NY | — | ◇ UNVERIFIED |
| MGMt Geo-tech Tools, LLC | Houston | TX | — | ◇ UNVERIFIED |
| MMMTS Manufacturing, Inc. | New Richmond | WI | — | ◇ UNVERIFIED |
| MMMTTI Manufacturing Group, LLC | Greenville | SC | — | ◇ UNVERIFIED |
| MIMueller Industries, L.L.C. | Saint Louis | MO | — | ◇ UNVERIFIED |
| MNMulcahy Nickolaus | Oakdale | MN | — | ◇ UNVERIFIED |
| MMMultisource Manufacturing LLC | Chisago City | MN | — | ◇ UNVERIFIED |
| MMMultisource Manufacturing LLC | Burnsville | MN | — | ◇ UNVERIFIED |
| MMMultisource Manufacturing LLC | Hopkins | MN | — | ◇ UNVERIFIED |
| MMMultisource Manufacturing LLC - Onamia | Onamia | MN | — | ◇ UNVERIFIED |
| MPMulti-spec Painting INC | Gardena | CA | — | ◇ UNVERIFIED |
| MCMunicipal Castings INC | Madison | MN | — | ◇ UNVERIFIED |
| MEMunicipal Equipment Exporters INC Dba Max-life Mfg | Stanton | CA | — | ◇ UNVERIFIED |
| MMMurphy Machine INC | Eden Prairie | MN | — | ◇ UNVERIFIED |
| MMMurphy Mechanical & Machine, LLC | Rushville | NY | — | ◇ UNVERIFIED |
| MGMurray Grinding-dearborn Hgts | Dearborn Heights | MI | — | ◇ UNVERIFIED |
| MIMurton INC. | Cleveland | OH | — | ◇ UNVERIFIED |
| MMMushro Machine & Tool Works, Inc. | Streator | IL | — | ◇ UNVERIFIED |
| MMMust Machining & Fabrication LLC | Saint Helena | CA | — | ◇ UNVERIFIED |
| MIMVB Industries, Inc. | Deerfield Beach | FL | — | ◇ UNVERIFIED |
| MWM & W Manufacturing INC | Iola | KS | — | ◇ UNVERIFIED |
| MSMW Solutions LLC | Defiance | OH | — | ◇ UNVERIFIED |
| MFMyhr Fabrication INC | Alexandria | MN | — | ◇ UNVERIFIED |
| MEMystique Engineering & Manufac | Marysville | WA | — | ◇ UNVERIFIED |
| MAMzd Acquisitions INC Dba Moz Designs INC | Oakland | CA | — | ◇ UNVERIFIED |
| NWNaff Welding INC | Henry | VA | — | ◇ UNVERIFIED |
| NANapa Auto Parts | Grove City | OH | — | ◇ UNVERIFIED |
| NMNash Manufacturing & Grinding Services | Springfield | MA | — | ◇ UNVERIFIED |
| NWNashville Welding - Machine Works, INC. | Wilson | NC | — | ◇ UNVERIFIED |
| NFNational Foundry and Mfg. INC. | Crane | TX | — | ◇ UNVERIFIED |
| NGNational Grinding & Manufacturing LLC | Sun City | AZ | — | ◇ UNVERIFIED |
 National Machinery - Fabrication INC | Rock Hill | SC | — | ◇ UNVERIFIED |
| NMNational Metal Abrasive Company | Wadsworth | OH | — | ◇ UNVERIFIED |
| NONational Oilwell Varco INC | Amelia | LA | — | ◇ UNVERIFIED |
| NSNational Shot Peening, INC. | Weatherford | TX | — | ◇ UNVERIFIED |
| NFNatl Fabricators & Mach/north East Plt | North East | PA | — | ◇ 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 |
| NCN C Machine LLC | Casper | WY | — | ◇ UNVERIFIED |
| NPNDZ Performance | Cheshire | CT | — | ◇ UNVERIFIED |
| NENeco Engineering INC | Blaine | MN | — | ◇ UNVERIFIED |
| NINedmac INC | Brooklyn Park | MN | — | ◇ UNVERIFIED |
| NFNeenah Foundry CO - Plants 2 and 3 (w2179) | Neenah | WI | — | ◇ UNVERIFIED |
| NPNelson Precision Turning INC | Bloomington | MN | — | ◇ UNVERIFIED |
| NQNeodesha Quality Machining, INC. | Neodesha | KS | — | ◇ UNVERIFIED |
| NINeo Industries (weirton) INC. | Weirton | WV | — | ◇ UNVERIFIED |
| NMNettwork Manufacturing INC | Rice | MN | — | ◇ UNVERIFIED |
| NENeumeier Engineering, Inc. | Federal Way | WA | — | ◇ UNVERIFIED |
