| MTMahuta Tool Corp | Germantown | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| MMMartens Machine Shop LLC | Fairview | OK | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| MSMartin Sprocket & Gear GA | Scottdale | GA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| MWMaxwell Welding & Machine | Burgettstown | PA | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| MMMcleod Machine Works INC | Beaumont | TX | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| MMMcleod Machine Works, INC. | Beaumont | TX | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| MTMerrill Tool & Water Jet, LLC | Merrill | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| MPMetaltech Products INC. | Lebanon | MO | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| MMMetric Manufacturing CO INC | Lowell | MI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| MTMicro Tool Company, INC. | Bethlehem | PA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| MMMingo Manufacturing | Owasso | OK | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| MGMinnesota Grinding INC | Crystal | MN | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| MCMitsubishi Chemical Advanced Materials IL | Libertyville | IL | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
Modern Machine Shop, INC. | Laredo | TX | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| MMModern-Tec Manufacturing, Inc. | Lockport | NY | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| MCMoody Corporation | Zelienople | PA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| MCMorris Coupling Company | Erie | PA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| MAM.s. Action Machining CORP | Mchenry | IL | Primary Metal Manufacturing331110 | 20-99 | ◐ LIKELY ACTIVE |
| MPMultimetal Products Corporation | Gurnee | IL | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
| NMNelson Machine and Welding Corporation | Green Bay | WI | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| NTNeosho Trompler Inc | Hartland | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| NENorth East Machine & Tool CO | Janesville | IA | Fabricated Metal Product Manufacturing332313 | 20-99 | ◐ LIKELY ACTIVE |
| NSNorthland Screw Products, Inc. | Saint Francis | MN | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| NMNorthwestern Mfg | Lake City | PA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| NPNovo Precision, LLC | Bristol | CT | Fabricated Metal Product Manufacturing332618 | 20-99 | ◐ LIKELY ACTIVE |
| NINtm INC | Fridley | MN | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| OCOSH Cut | Spanish Fork | UT | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| PAPankl Aerospace Systems | Cerritos | CA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
Paragon Manufacturing | Westfield | MA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| PMPaul's Machine and Welding Corp | Villa Grove | IL | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| PMPierce Machinery | Andrews | SC | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| PFPrecise Fabrication | Beatrice | NE | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| PMPrecision Machine Technologies | Rochester | NY | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| PCPrecisionmatics Co., INC. | West Winfield | NY | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| PRPrecision Roll Grinders, Inc. - GA | Carrollton | GA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| PEPride Engineering LLC | Brooklyn Park | MN | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| PTPrimetals Technologies - Warren | Warren | OH | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
Production Engineering Corporation | Minneapolis | MN | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| PTPrompton Tool INC | Honesdale | PA | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
| PPPro Process, LLC | Saint Marys | PA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| PLProvident LLC | Appleton | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| PTPrz Technologies, LLC | Lancaster | NY | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| PMPutnam Machine Products INC | Coldwater | MI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| RTRandolph Tool CO. INC | Hartville | OH | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| RIReo Industries, INC. | Hayden | ID | Primary Metal Manufacturing331524 | 20-99 | ◐ LIKELY ACTIVE |
| RMRev-Tech Manufacturing Solutions LLC | Saint Petersburg | FL | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| RMRhine Machining & Fabricating, Inc. | Kiel | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| RMRochester Manufacturing | Wellington | OH | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| RTR&R Tool, Inc. Blanchester | Blanchester | OH | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| RMRTI Machine Inc. | Polk | PA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |