| MTManitowoc Tool & Machining LLC | Manitowoc | WI | 100–499 | ● ACTIVE |
Manor Tool & Manufacturing CO | Schiller Park | IL | — | ● ACTIVE |
Mantel Machine Products INC. | Menomonee Falls | WI | 20–99 | ● ACTIVE |
Manufacturing Sciences Corporation | Oak Ridge | TN | — | ● ACTIVE |
| MSManufacturing Solutions, INC | Newton | KS | 20–99 | ● ACTIVE |
Mapal INC | Port Huron | MI | 100–499 | ● ACTIVE |
| MTMapp Technologies, L.l.c. | Joplin | MO | 100–499 | ● ACTIVE |
Marlon INC | Boise | ID | — | ● ACTIVE |
M.a.r.'s Engineering Company, INC. | San Leandro | CA | — | ● ACTIVE |
Marsh Industrial Services, INC. | Kalkaska | MI | — | ● ACTIVE |
Martel Tool CORP | Allen Park | MI | — | ● ACTIVE |
| MMMarten Machining, INC. | Stevens Point | WI | 20–99 | ● ACTIVE |
Martindale Electric Company, the | Lakewood | OH | 20–99 | ● ACTIVE |
Martinez and Turek, INC. | Rialto | CA | — | ● ACTIVE |
Martin Machine & Welding INC | Halstead | KS | — | ● ACTIVE |
| MYMartin Yale Industries | Wabash | IN | 20–99 | ● ACTIVE |
Marton Precision Manufacturing, LLC | Fullerton | CA | 20–99 | ● ACTIVE |
Marx Digital Mfg. INC. | Santa Clara | CA | — | ● ACTIVE |
Mass Finishing INC | Howard Lake | MN | — | ● ACTIVE |
Mass Precision, INC. | San Jose | CA | — | ● ACTIVE |
Masterbilt INC | South Bend | IN | — | ● ACTIVE |
Master Bolt LLC | Elyria | OH | 20–99 | ● ACTIVE |
Master Machining, INC | Castle Hayne | NC | — | ● ACTIVE |
Master Metal Products Company | San Jose | CA | — | ● ACTIVE |
Master Precision Machining | Santa Clara | CA | — | ● ACTIVE |
Master Research & Manufacturing, INC. | Norwalk | CA | — | ● ACTIVE |
Masters Machine Company | Bristol | ME | 20–99 | ● ACTIVE |
Master Tool & Mfg., INC. | Hiawatha | IA | 20–99 | ● ACTIVE |
Matenaer CORP | West Bend | WI | — | ● ACTIVE |
Material Alteration Company, LLC | Houston | TX | — | ● ACTIVE |
Matrix Plastic Products INC | Wood Dale | IL | 100–499 | ● ACTIVE |
| MIMatthews Industries INC. | Decatur | AL | 20–99 | ● ACTIVE |
Matthias Enterprises, INC | Newport News | VA | — | ● ACTIVE |
Mauell CORP | Dillsburg | PA | 20–99 | ● ACTIVE |
| MCMax Coating INC | Birmingham | AL | 20–99 | ● ACTIVE |
Maynard INC | Fayetteville | AR | — | ● ACTIVE |
May Tool and Mold Co., INC. | Kansas City | MO | — | ● ACTIVE |
Mazak CORP | Florence | KY | — | ● ACTIVE |
M-b Companies, INC | New Holstein | WI | — | ● ACTIVE |
| MCMbi Construction Services INC | Yakima | WA | — | ● ACTIVE |
M & B Machine, INC. | Carlisle | PA | 20–99 | ● ACTIVE |
Mcalpin Industries INC. | Rochester | NY | — | ● ACTIVE |
Mcclarin Plastics, LLC | Hanover | PA | — | ● ACTIVE |
Mcdonald Air & Sheet Metal INC. | Orlando | FL | 20–99 | ● ACTIVE |
Mcgill Airflow LLC | Fountain Inn | SC | 20–99 | ● ACTIVE |
Mckenzie Machining INC | San Jose | CA | — | ● ACTIVE |
| MBMcmellon Bros., Incorporated | Stratford | CT | 20–99 | ● ACTIVE |
Mcnally Industries, LLC | Grantsburg | WI | — | ● ACTIVE |
Mcneil Industries INC | Painesville | OH | 20–99 | ● ACTIVE |
Mcneilus Steel INC | Dodge Center | MN | — | ● ACTIVE |
| MPMdc Precision LLC | Hayward | CA | — | ● 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 |
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 |
Merit3d, LLC | Price | UT | — | ● ACTIVE |
Merit Gage INC | Minneapolis | MN | — | ● ACTIVE |
Merlin Mold & Manufacturing INC | Canastota | NY | — | ● 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 |
Metallic Ladder Manufacturing CORP. | Randolph | NY | — | ● ACTIVE |
Metallion Industries, INC. | Estacada | OR | — | ● ACTIVE |
Metallizing Service Company Holdings, LLC | West Hartford | CT | — | ● ACTIVE |
| MMMetal Magic INC | Phoenix | AZ | 20–99 | ● 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 |
| 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 |