| MSMichael Steiro | Lebanon | MO | — | ◇ UNVERIFIED |
| MTMichael Tareski | Medical Lake | WA | — | ◇ UNVERIFIED |
| MWMichael Wynakos | Monroe | WA | — | ◇ UNVERIFIED |
 Microcast Technologies | Avenel | NJ | — | ◇ UNVERIFIED |
| MOMicrocoat of Santa Rosa | Santa Rosa | CA | — | ◇ UNVERIFIED |
| MDMicro - Dynamics | Woburn | MA | — | ◇ UNVERIFIED |
| MLMicro-fab LLC | Minneapolis | MN | — | ◇ UNVERIFIED |
| MIMicrofabrica INC | Van Nuys | CA | — | ◇ UNVERIFIED |
| MFMicro Finish & Coating INC. | Kansas City | MO | — | ◇ UNVERIFIED |
| MAMicroflex Automotive | Ormond Beach | FL | — | ◇ UNVERIFIED |
| MIMicrogon INC | Laguna Hills | CA | — | ◇ UNVERIFIED |
| MMMicro Machine INC | Greenfield | MN | — | ◇ UNVERIFIED |
| MMMicromatics Machine CO | Hollis | NH | — | ◇ UNVERIFIED |
| MIMicrometals INC | Anaheim | CA | — | ◇ UNVERIFIED |
| MMMicro Mfg. INC. | Caledonia | MI | — | ◇ UNVERIFIED |
| MMicromist | Calimesa | CA | — | ◇ UNVERIFIED |
| MPMicron Precision LLC Dba King Machine Fayetteville | Fayetteville | NC | — | ◇ UNVERIFIED |
 Micron Technology | Minneapolis | MN | — | ◇ UNVERIFIED |
| MPMicro Parts INC | Eagan | MN | — | ◇ UNVERIFIED |
| MMicroprobe | Carlsbad | CA | — | ◇ UNVERIFIED |
| MSMicro Space Products | Torrance | CA | — | ◇ UNVERIFIED |
 Micross Components/hatfield | Hatfield | PA | — | ◇ UNVERIFIED |
 Microteq Engineering INC | San Antonio | TX | — | ◇ UNVERIFIED |
 Microtool INC. | Shawnee Mission | KS | — | ◇ UNVERIFIED |
| MDMicrowave Development | Needham | MA | — | ◇ UNVERIFIED |
| MSMicrowave Specialty Company | San Marcos | CA | — | ◇ UNVERIFIED |
| MMMid-american Machine & Equipment, INC. | Le Roy | KS | — | ◇ UNVERIFIED |
| MCMid City Precision INC | Saint Louis Park | MN | — | ◇ UNVERIFIED |
| MCMid City Precision LLC | Wausau | WI | — | ◇ UNVERIFIED |
| MUMidcom Unit Midtex Division (former Location) | Watertown | SD | — | ◇ UNVERIFIED |
| MCMidcon Cables Company | Bennettsville | SC | — | ◇ UNVERIFIED |
| MMMiddleton Machining & Welding, INC. | Middleton | WI | — | ◇ UNVERIFIED |
| MTMide Technology Corporation | Woburn | MA | — | ◇ UNVERIFIED |
| MKMid Kansas Machine INC. | Mcpherson | KS | — | ◇ UNVERIFIED |
| MRMidland Ross CORP | Cambridge | MA | — | ◇ UNVERIFIED |
| MPMidsouth Power Equipment Company, INC. | Greensboro | NC | — | ◇ UNVERIFIED |
| MMMid-state Machine & Fabricating Corporation | Bartow | FL | — | ◇ UNVERIFIED |
| MMMid-state Machine Shop, INC. | East Dublin | GA | — | ◇ UNVERIFIED |
| MMMid-state Manufacturing, LLC | Mt. Ulla | NC | — | ◇ UNVERIFIED |
| MMMidway Machine & Welding Shop, INC. | Burleson | TX | — | ◇ UNVERIFIED |
| MMMidwest Machine, LLC | Beloit | WI | — | ◇ UNVERIFIED |
| MMMidwest Machining INC. | Harper | KS | — | ◇ UNVERIFIED |
| MMMidwest Manufacturing Corporation | Omaha | NE | — | ◇ UNVERIFIED |
| MMMidwest Metal Works INC | Grove City | MN | — | ◇ UNVERIFIED |
 Midwest Precision Tooling and Manufacturing LLC | Buffalo | MN | — | ◇ UNVERIFIED |
| Midwest Precision Tooling and Manufacturing LLC | New Ulm | MN | — | ◇ UNVERIFIED |
| Midwest Precision Tooling and Manufacturing LLC | Hutchinson | MN | — | ◇ UNVERIFIED |
| MPMidwest Production Solutions | Moran | KS | — | ◇ UNVERIFIED |
| MPMidwest Pro Manufacturing INC. | Rock Valley | IA | — | ◇ UNVERIFIED |
| MRMidwest Remanufacturing, LLC | Bedford Park | IL | — | ◇ UNVERIFIED |
| MDMike Dyell Machine Shop & Hydraulics, in | Rialto | CA | — | ◇ UNVERIFIED |
| MMMike's Machine Shop | Licking | MO | — | ◇ UNVERIFIED |
| MPMike's Performance & Machine Shop | Las Cruces | NM | — | ◇ UNVERIFIED |
| MHMilans Holdings Enterprises LLC | Doral | FL | — | ◇ UNVERIFIED |
| MMMile-hi Machine, INC. | Arvada | CO | — | ◇ UNVERIFIED |
| MMMiles Machine LLC | Waterboro | ME | — | ◇ UNVERIFIED |
| MMMillcraft Mfg INC | San Jose | CA | — | ◇ UNVERIFIED |
| MMMillennium Machining, INC | Lewiston | UT | — | ◇ UNVERIFIED |
| MMMillennium Microwave Corporation | Fruitland | MD | — | ◇ UNVERIFIED |
| MPMillennium Power Services, Inc. | Westfield | MA | — | ◇ UNVERIFIED |
| MMMiller Machined Products, INC. | Endeavor | WI | — | ◇ UNVERIFIED |
| MMMiller Machine & Mechanical Inc. | Mexico | NY | — | ◇ UNVERIFIED |
| MMMiller Machine & Mechanical, INC. | Mexico | NY | — | ◇ UNVERIFIED |
| MMMiller Machine Works, LLC | San Diego | CA | — | ◇ UNVERIFIED |
 Miller Welding & Machine Co/maplevale Plt | Brookville | PA | — | ◇ UNVERIFIED |
| MMMill Mechanical, LLC. | Monroe | OH | — | ◇ UNVERIFIED |
| MMMillpro Manufacturing and Engineering | Hawthorne | CA | — | ◇ UNVERIFIED |
| MPMill Pro Manufacturing LLC | Bluffdale | UT | — | ◇ UNVERIFIED |
| MPMill Pro Manufacturing LLC | Bluffdale | UT | — | ◇ UNVERIFIED |
| MMMillwood Metalworks INC | Freeport | MN | — | ◇ UNVERIFIED |
| MMMil-Spec Magnetics, Inc. | San Bernardino | CA | — | ◇ UNVERIFIED |
| MLMilteq, LLC | Fountain Hills | AZ | — | ◇ UNVERIFIED |
| MRMinit Realty LLC | Chandler | AZ | — | ◇ UNVERIFIED |
| MAMinnesota Ag Power INC Howard Lake | Howard Lake | MN | — | ◇ UNVERIFIED |
| MMMinnesota Machining Incorporated | Wyoming | MN | — | ◇ UNVERIFIED |
| MWMinnesota Waterjet INC | Ramsey | MN | — | ◇ UNVERIFIED |
| MPMiratech Prior Lake INC | Prior Lake | MN | — | ◇ UNVERIFIED |
| MLMist123, LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| MRMisty Robotics | Boulder | CO | — | ◇ UNVERIFIED |
| MMMitchell Machine Works, INC. | Dalton | GA | — | ◇ UNVERIFIED |
| MMMitchell Manufacturing, INC. | Tomball | TX | — | ◇ UNVERIFIED |
| MSMitchell & Son INC | Memphis | TN | — | ◇ UNVERIFIED |
| MIMixon INC | Saint Paul | MN | — | ◇ UNVERIFIED |
| MCMJCA Companies, LLC | Blaine | MN | — | ◇ UNVERIFIED |
| MMMjj Machine Shop | Mission | TX | — | ◇ UNVERIFIED |
| MEMJLJ Enterprises, LLC | Anaheim | CA | — | ◇ UNVERIFIED |
| MJM. J. Machine, INC. | Bridgewater | MA | — | ◇ UNVERIFIED |
 Mjm Manufacturing Solutions INC | Swansea | MA | — | ◇ UNVERIFIED |
| MMMkc Machine & Fab, INC. | Carrollton | GA | — | ◇ UNVERIFIED |
| MSMK Services Corp. | Middleton | MA | — | ◇ UNVERIFIED |
| MIMks Instruments INC. | Colorado Springs | CO | — | ◇ UNVERIFIED |
| MLM - L Industries INC | Rogers | MN | — | ◇ UNVERIFIED |
| MMM & M Certified Welding, INC. | Macedonia | OH | — | ◇ UNVERIFIED |
| MGMM Group 1 LLC | Morgan Hill | CA | — | ◇ UNVERIFIED |
| MMM & M Hydraulic CO | Roseville | MN | — | ◇ UNVERIFIED |
| MMmi | Sonora | CA | — | ◇ UNVERIFIED |
| MPMmi Precision LLC | Ramsey | MN | — | ◇ UNVERIFIED |
| MMMmj Machining and Fabricating, INC. | Randleman | NC | — | ◇ UNVERIFIED |
| MMM & M Machining | Salinas | CA | — | ◇ UNVERIFIED |
| MQM&m Quality Grinding | Hodgkins | IL | — | ◇ UNVERIFIED |
