| MCMars Company | Ocala | FL | — | ◇ UNVERIFIED |
| MSMarsellous Spires LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| MCMar-tech CO. | Mount Juliet | TN | — | ◇ UNVERIFIED |
| MEMartelli Enterprises INC | Pensacola | FL | — | ◇ UNVERIFIED |
| MTMar-vel Tool CO. | Dayton | OH | — | ◇ UNVERIFIED |
| MHMarv Haugen Enterprises | Casselton | ND | — | ◇ UNVERIFIED |
| MHMason Header Die | Mason | MI | — | ◇ UNVERIFIED |
| MCMaster Craft Extrusion Tools INC | Northport | MI | — | ◇ UNVERIFIED |
| MMMastercraft Metal Polishing | Sun Valley | CA | — | ◇ UNVERIFIED |
| MCMaster Cut Tool CO | Livonia | MI | — | ◇ UNVERIFIED |
| MTMasterform Tool Company | Franklin Park | IL | — | ◇ UNVERIFIED |
| MKMaster Kraft Machining,inc. | Fremont | CA | — | ◇ UNVERIFIED |
| MMatech | Salisbury | MD | — | ◇ UNVERIFIED |
| MDMathias Die Company, Inc. | Golden Valley | MN | — | ◇ UNVERIFIED |
| MDMathias Die Company INC | Minneapolis | MN | — | ◇ UNVERIFIED |
 Matrix Machine CORP | Chino | CA | — | ◇ UNVERIFIED |
| MMMatt's Metal Stitch LLC | Hamburg | NY | — | ◇ UNVERIFIED |
| MEMax Engineering, LLC | Shawnee | KS | — | ◇ UNVERIFIED |
| MCMazak CORP | Elsmere | KY | — | ◇ UNVERIFIED |
| MTMcintyre Tool & Machine | El Cajon | CA | — | ◇ UNVERIFIED |
| MCM & C Precision INC | Gardena | CA | — | ◇ UNVERIFIED |
| MMMCS Manufacturing LLC | Lyons | OH | — | ◇ UNVERIFIED |
| MSMeador Supply Co, Inc. | Bedford | OH | — | ◇ UNVERIFIED |
| MSMeador Supply Co., Inc. | Walton Hills | OH | — | ◇ UNVERIFIED |
| MTMekra Tool and Mold LLC | Ridgeway | SC | — | ◇ UNVERIFIED |
| MMMe Machining INC | Santa Ana | CA | — | ◇ UNVERIFIED |
| MCMemry Corporation | Menlo Park | CA | — | ◇ UNVERIFIED |
| MBMetal Breath Industries, LLC | West Jordan | UT | — | ◇ UNVERIFIED |
| MCMetal Component Manufacturers, INC. | Northport | AL | — | ◇ UNVERIFIED |
| MIMetalon Industries INC | Croswell | MI | — | ◇ UNVERIFIED |
| MPMetal Punch Corporation | Cadillac | MI | — | ◇ UNVERIFIED |
| MQMetal Quest INC | Portland | TN | — | ◇ UNVERIFIED |
| MMMethods Machine Tools INC | Wixom | MI | — | ◇ UNVERIFIED |
| MTMet-pro Technologies, LLC | Telford | PA | — | ◇ UNVERIFIED |
| MDMetric Design & Manufacturing INC | Campbell | CA | — | ◇ UNVERIFIED |
| MMMetro Mold & Design LLC - Building 1 | Rogers | MN | — | ◇ UNVERIFIED |
| MMMeyco Machine & Tool INC | Fountain Valley | CA | — | ◇ UNVERIFIED |
| MFM & F Machine & Tool INC | Temperance | MI | — | ◇ UNVERIFIED |
| MMMgs Manufacturing Group | Libertyville | IL | — | ◇ UNVERIFIED |
| MEMichalski Enterprises INC Dba Tool Craft | Lansing | MI | — | ◇ UNVERIFIED |
| MMMicrofinishing Machine Tools, Inc. | Lansing | MI | — | ◇ UNVERIFIED |
| MLMicronixusa, LLC | Santa Ana | CA | — | ◇ UNVERIFIED |
| MMMicron Machine CO | Poway | CA | — | ◇ UNVERIFIED |
| MPMicron Precision, LLC | Charlotte | NC | — | ◇ UNVERIFIED |
| MIMicrotenths INC Dba Detail Tool & Engineering INC | Blaine | MN | — | ◇ UNVERIFIED |
| MCMicrowave Components Specialists, in | Bedford | MA | — | ◇ UNVERIFIED |
| MMMidlander Manufacturing Inc | Hope | MI | — | ◇ UNVERIFIED |
| MTMidland Technologies INC | Otsego | MN | — | ◇ UNVERIFIED |
| MMMid-Michigan Machine Tool, LLC | Gladwin | MI | — | ◇ UNVERIFIED |
| MMMid-state Manufacturing | Milldale | CT | — | ◇ UNVERIFIED |
| MIMidstates Industrial Group INC | Clinton Township | MI | — | ◇ UNVERIFIED |
| MCMidwest Cnc LLC | Loves Park | IL | — | ◇ UNVERIFIED |
| MFMidwest Forging Die Dba Water Works of Rockford | Rockford | IL | — | ◇ UNVERIFIED |
| MMMidwest Machining INC Dba Self Lube Mold and Die Components | Coopersville | MI | — | ◇ UNVERIFIED |
| MSMidwest Steel Rule Cutting Die, INC. | Indianapolis | IN | — | ◇ UNVERIFIED |
| MBMiller Broach INC | Capac | MI | — | ◇ UNVERIFIED |
| MBMiller Broach, INC | Riley | MI | — | ◇ UNVERIFIED |
| MPMiller Precision Edm, LLC | Goffstown | NH | — | ◇ UNVERIFIED |
| MMMilltech Machining INC | San Jose | CA | — | ◇ UNVERIFIED |
| MMMilltech Machining INC | San Jose | CA | — | ◇ UNVERIFIED |
| MCMission Custom Extrusions INC | Fontana | CA | — | ◇ UNVERIFIED |
| MIMist Incorporated (mist Industrial Tools) | Simi Valley | CA | — | ◇ UNVERIFIED |
| MIMjolnir Industries, LLC | Oxnard | CA | — | ◇ UNVERIFIED |
| MTMk Tooling INC | Portland | OR | — | ◇ UNVERIFIED |
| MAMmgc Acquisition, LLC | Elmhurst | IL | — | ◇ UNVERIFIED |
| MJM&m Jig Grinding INC | Santa Clara | CA | — | ◇ UNVERIFIED |
| MTMn Twist Drill Aquisition LLC | Chisholm | MN | — | ◇ UNVERIFIED |
| MMMolitech Manufacturing | Santa Clara | CA | — | ◇ UNVERIFIED |
| MFMonaco Family, LLC | Eugene | OR | — | ◇ UNVERIFIED |
| MMMoneco Machine Company, INC. | Cerritos | CA | — | ◇ UNVERIFIED |
| MGMorris Group, INC. | Rochester | NY | — | ◇ UNVERIFIED |
| MCMorse Cutting Tools | New Bedford, City of | MA | — | ◇ UNVERIFIED |
| MTMossman Tebbs, LLC | Rochester | NY | — | ◇ UNVERIFIED |
| MCMotor City Racks | Gaffney | SC | — | ◇ UNVERIFIED |
| MCMotors & Controls Warehouse INC. | Anaheim | CA | — | ◇ UNVERIFIED |
| MVMountain View Metal Works, LLC | Boise | ID | — | ◇ UNVERIFIED |
| MRM R Mold & Engineering Corporation | Brea | CA | — | ◇ UNVERIFIED |
| MPMsc Pinole Point Steel INC | Richmond | CA | — | ◇ UNVERIFIED |
| MOMSTD Operations LLC | Milwaukee | WI | — | ◇ UNVERIFIED |
| MSM S Willett INC | Cockeysville | MD | — | ◇ UNVERIFIED |
| MBMt Brothers LLC | Troy | MI | — | ◇ UNVERIFIED |
| MPMtd Products INC | Leitchfield | KY | — | ◇ UNVERIFIED |
| MMMueller Machine & Tool CO | Saint Louis | MO | — | ◇ UNVERIFIED |
| MEMullen Enterprises, Inc. | Temple Terrace | FL | — | ◇ UNVERIFIED |
| MMMultisource Manufacturing LLC | Chisago City | MN | — | ◇ UNVERIFIED |
| MMMurata Machinery Usa, INC. Machine Tools Divisions | Charlotte | NC | — | ◇ UNVERIFIED |
| MMMurray Machine Tool CO | Gallatin | TN | — | ◇ UNVERIFIED |
| MMMustang Manufacturing, INC. | Carson City | NV | — | ◇ UNVERIFIED |
| NGNap Gladu | Ontario | CA | — | ◇ UNVERIFIED |
| NCNas Cp CORP | College Point | NY | — | ◇ UNVERIFIED |
| NPNational Precision Machining Service, INC. | Franklin | TN | — | ◇ UNVERIFIED |
| NINci INC Dba Unique Tool | Hutchinson | MN | — | ◇ UNVERIFIED |
| NPNeely Precision LLC | Gallatin | TN | — | ◇ UNVERIFIED |
| NTNesco Tool & Fixture LLC | Howell | MI | — | ◇ UNVERIFIED |
| NVNeway Valve International, INC. | Stafford | TX | — | ◇ UNVERIFIED |
| NINewest II LLC | Waukesha | WI | — | ◇ UNVERIFIED |
| NTNewko Tool & Engineering | Palatine | IL | — | ◇ UNVERIFIED |
| NONew Orleans Copper, LLC | New Orleans | LA | — | ◇ UNVERIFIED |
| NRNew Rochelle Precision Grinding CORP. | Pelham | NY | — | ◇ UNVERIFIED |
| NMNexgen Mold and Tool | New Albany | IN | — | ◇ UNVERIFIED |
