| MBMcmellon Bros., Incorporated | Stratford | CT | 20–99 | ● ACTIVE |
Mcminnville Workholding, INC. | Mcminnville | TN | — | ● ACTIVE |
Mcnally Industries, LLC | Grantsburg | WI | — | ● ACTIVE |
Mcneil Industries INC | Painesville | OH | 20–99 | ● ACTIVE |
Md Plastics INC. | Columbiana | OH | — | ● ACTIVE |
Meaden Precision Machined Products Company | Burr Ridge | IL | 20–99 | ● ACTIVE |
Mechanical Analysis/repair, INC. | Lodi | CA | — | ● ACTIVE |
Mechanical Development Company, Incorporated | Salem | VA | 20–99 | ● ACTIVE |
| MDMechanical Devices CO | Bloomington | IL | 100–499 | ● ACTIVE |
Mechanical Metal Finishing CO | Gardena | CA | — | ● ACTIVE |
Mega Precision LLC | Newington | CT | — | ● ACTIVE |
Megatech Manufacturing LLC | Westminster | CA | — | ● ACTIVE |
Megator CORP | Pittsburgh | PA | — | ● ACTIVE |
Meiden America Switchgear, INC | Gray Court | SC | 20–99 | ● ACTIVE |
Mekra Lang North America, LLC | Ridgeway | SC | 100–499 | ● ACTIVE |
Melco Steel INC | Azusa | CA | — | ● ACTIVE |
Melrose Metal Finishing, INC | Oakland | CA | — | ● ACTIVE |
Memcor INC | Huntington | IN | — | ● ACTIVE |
Menze Precision Machining, LLC | Winter Haven | FL | — | ● ACTIVE |
Mercury Aircraft INC | Hammondsport | NY | 100–499 | ● ACTIVE |
Mercury Machine Works LLC | Spring | TX | — | ● ACTIVE |
Mercury Products CORP | Schaumburg | IL | — | ● ACTIVE |
Merit Gage INC | Minneapolis | MN | — | ● ACTIVE |
Mesa Custom Machining CORP | Gilbert | AZ | — | ● ACTIVE |
Meta Fab, INC | Hillsboro | OR | — | ● ACTIVE |
Metal Chem, INC. | Chatsworth | CA | — | ● ACTIVE |
Metalcrafters, INC. | Methuen | MA | 20–99 | ● ACTIVE |
| MOMetalcraft of Mayville INC | Mayville | WI | 100–499 | ● ACTIVE |
Metal Essence, INC. | Longwood | FL | — | ● ACTIVE |
| MEMetal Etch Services INC | San Marcos | CA | 20–99 | ● ACTIVE |
Metalex Manufacturing INC | Cincinnati | OH | 100–499 | ● ACTIVE |
| MFMetal Fab South INC | Kenner | LA | — | ● ACTIVE |
Metal Finishing Specialty, LLC | Albuquerque | NM | — | ● ACTIVE |
Metalform Industries, INC. | Wichita | KS | — | ● ACTIVE |
Metal Forming & Coining LLC | Maumee | OH | — | ● ACTIVE |
Metalid Manufacturing INC | Pacoima | CA | — | ● ACTIVE |
Metal Impact LLC | Elk Grove Village | IL | — | ● ACTIVE |
Metal Improvement Company, LLC | Saint Paul | MN | — | ● ACTIVE |
Metal Improvement Company, LLC | Addison | IL | — | ● ACTIVE |
| MIMetal Improvement Company, LLC | Milwaukee | WI | 20–99 | ● ACTIVE |
| MIMetal Improvement Company, LLC | Santa Ana | CA | — | ● ACTIVE |
| MIMetal Improvement Company, LLC | Lynwood | CA | — | ● ACTIVE |
Metal Improvement Company, LLC | Twinsburg | OH | — | ● ACTIVE |
Metal Improvement Company, LLC | Grand Prairie | TX | — | ● ACTIVE |
Metallic Ladder Manufacturing CORP. | Randolph | NY | — | ● ACTIVE |
Metallion Industries, INC. | Estacada | OR | — | ● ACTIVE |
Metallizing Service Company Holdings, LLC | West Hartford | CT | — | ● ACTIVE |
Metalmite CORP | Rochester | MI | — | ● ACTIVE |
| MPMetal Processing, INC | Radford | VA | — | ● ACTIVE |
Metalquest Unlimited, INC | Hebron | NE | — | ● ACTIVE |
Metal Roofing Systems INC | Stanley | NC | — | ● ACTIVE |
| MTMetals Technology CORP | Carol Stream | IL | 20–99 | ● ACTIVE |
| MSMetal Surfaces International, LLC | Bell Gardens | CA | 100–499 | ● ACTIVE |
Metal Tech INC | Gulfport | MS | — | ● ACTIVE |
| MPMetal-tech Partners | Geneva | NE | 20–99 | ● ACTIVE |
Meta Manufacturing CORP | Blue Ash | OH | — | ● ACTIVE |
| MIMetamora Industries, LLC | Metamora | IL | 20–99 | ● ACTIVE |
Met International Trading Company, INC. | Houston | TX | — | ● ACTIVE |
Metplas INC | Natrona Heights | PA | 20–99 | ● ACTIVE |
Metro Machine, INC. | Englewood | CO | 20–99 | ● ACTIVE |
Metron Machining LLC | Lakewood | CO | — | ● ACTIVE |
Metro Technologies Limited | Troy | MI | — | ● ACTIVE |
Meva Formwork Systems INC | Springfield | OH | — | ● ACTIVE |
| MTMeyer Tool, INC. | Cincinnati | OH | 500+ | ● ACTIVE |
Mfc Netform LLC | Shelby Township | MI | — | ● ACTIVE |
Mf Engineering Company, INC. | Bristol | RI | — | ● ACTIVE |
M & H Machining, INC | Georgetown | TX | — | ● ACTIVE |
Mica-tron Products CORP | Holbrook | MA | — | ● ACTIVE |
Michigan Spline Gage CO | Hazel Park | MI | — | ● ACTIVE |
| MPMicron Precision Machining INC | Saginaw | MI | — | ● ACTIVE |
Micro Precision, LLC | South Windham | CT | 20–99 | ● ACTIVE |
Microtech Machine CO INC | Wheeling | IL | — | ● ACTIVE |
Mid-continent Engineering, LLC | Minneapolis | MN | — | ● ACTIVE |
Mid-continent Machining INC | Kansas City | KS | — | ● ACTIVE |
| MTMid-state Tank CO INC | Sullivan | IL | — | ● ACTIVE |
Mid Valley Industries, LLC | Kaukauna | WI | — | ● ACTIVE |
Midway Machine & Instrument Company INC | South Houston | TX | — | ● ACTIVE |
Midwest Engineered Systems, INC. | Waukesha | WI | 100–499 | ● ACTIVE |
Midwest Machine & Tool, INC | Columbus | NE | — | ● ACTIVE |
Midwest Metal Fabrication LLC | Manitowoc | WI | — | ● ACTIVE |
Midwest Specialties INC | Wapakoneta | OH | — | ● ACTIVE |
Mike Gibson Manufacturing INC | Caldwell | ID | — | ● ACTIVE |
Mike Kenney Tool, INC | Placentia | CA | — | ● ACTIVE |
Mikron Manufacturing, INC. | Colorado Springs | CO | — | ● ACTIVE |
| MSMikro Systems, INC | Charlottesville | VA | 100–499 | ● ACTIVE |
Millennium Precision LLC | Manchester | NH | — | ● ACTIVE |
Miller Diversified Machining INC | Minneapolis | MN | — | ● ACTIVE |
Miller-leaman, INC. | Daytona Beach | FL | — | ● ACTIVE |
Miller & Son | Belleville | NJ | — | ● ACTIVE |
Milliflect Company LLC | Newark | CA | — | ● ACTIVE |
Millrite Machine INC. | Westfield | MA | — | ● ACTIVE |
Mill Rose CO | Mentor | OH | — | ● ACTIVE |
Milton Manufacturing, INC. | Detroit | MI | — | ● ACTIVE |
Milton, Vermont Sheet Metal, INC | Milton | VT | — | ● ACTIVE |
| MMMinden Machine Shop INC | Minden | NE | 20–99 | ● ACTIVE |
Minerva Welding and Fabricating, INC. | Minerva | OH | — | ● ACTIVE |
Minic Industries INC | Crystal Lake | IL | — | ● ACTIVE |
Mini-flex Corporation | Ventura | CA | — | ● ACTIVE |
| MFMinitec Framing Systems, LLC | Farmington | NY | 20–99 | ● ACTIVE |
Minnesota Industrial Tooling INC. | Lonsdale | MN | — | ● ACTIVE |