| HTH3d Tool CORP. | Newcomerstown | OH | Machinery Manufacturing333515 | 20-99 | ◐ LIKELY ACTIVE |
| HHHonda Heritage Center | Marysville | OH | Machinery Manufacturing333511 | — | ◐ LIKELY ACTIVE |
| HTHowmet - Tempcraft | Cleveland | OH | Fabricated Metal Product Manufacturing332997 | 100-499 | ◐ LIKELY ACTIVE |
| JMJ & M Manufacturing Co., Inc. | Fort Recovery | OH | Machinery Manufacturing333111 | 100-499 | ◐ LIKELY ACTIVE |
| MIMansfield Industries INC | Mansfield | OH | Primary Metal Manufacturing331529 | 20-99 | ◐ LIKELY ACTIVE |
| MIMidwestern Industries INC. | Massillon | OH | Fabricated Metal Product Manufacturing332618 | 20-99 | ◐ LIKELY ACTIVE |
| MOMoog Orrville | Orrville | OH | Fabricated Metal Product Manufacturing332912 | 20-99 | ◐ LIKELY ACTIVE |
| MPMorrison Products Cleveland | Cleveland | OH | Machinery Manufacturing333413 | 100-499 | ◐ LIKELY ACTIVE |
National Machine Tool CO. | Cincinnati | OH | Machinery Manufacturing333517 | 1-19 | ◐ LIKELY ACTIVE |
| NFNemco Food Equipment LTD | Hicksville | OH | Machinery Manufacturing333241 | 100-499 | ◐ LIKELY ACTIVE |
| NMNidec Minster CORP | Minster | OH | Machinery Manufacturing333517 | 100-499 | ▲ REPORTED CLOSED |
| NTNorthwestern Tools Inc. | Dayton | OH | Machinery Manufacturing333514 | 20-99 | ◐ LIKELY ACTIVE |
| ODOhio Drill and Tool Company | Homeworth | OH | Machinery Manufacturing333515 | 20-99 | ◐ LIKELY ACTIVE |
| PMPalmer Manufacturing & Supply, Inc. | Springfield | OH | Machinery Manufacturing333249 | 20-99 | ◐ LIKELY ACTIVE |
| PPermco | Streetsboro | OH | Machinery Manufacturing333911 | 100-499 | ◐ LIKELY ACTIVE |
| PPPleasant Precision Inc | Kenton | OH | Machinery Manufacturing333514 | 20-99 | ◐ LIKELY ACTIVE |
| PIPositrol, INC. | Cincinnati | OH | Machinery Manufacturing333515 | 20-99 | ▲ REPORTED CLOSED |
| PCPrecision Castparts CORP - Airfoils LLC | Painesville | OH | Machinery Manufacturing333611 | — | ◐ LIKELY ACTIVE |
Projects Designed & Built INC | Toledo | OH | Machinery Manufacturing333248 | 20-99 | ◐ LIKELY ACTIVE |
| PAPyrotek Aurora | Aurora | OH | Machinery Manufacturing333248 | 100-499 | ◐ LIKELY ACTIVE |
| RCRJS Corporation | Akron | OH | Machinery Manufacturing333249 | 20-99 | ◐ LIKELY ACTIVE |
Robex, LLC | Maumee | OH | Machinery Manufacturing333248 | — | ◐ LIKELY ACTIVE |
| RCRpm Carbide Die, INC. | Arcadia | OH | Machinery Manufacturing333514 | 20-99 | ◐ LIKELY ACTIVE |
| SSSeven Stones Projects CORP | Mentor | OH | Machinery Manufacturing333514 | — | ◐ LIKELY ACTIVE |
| SESew Eurodrive | Troy | OH | Chemical Manufacturing325510 | 100-499 | ◐ LIKELY ACTIVE |
| SBStelter & Brinck, LTD | Harrison | OH | Machinery Manufacturing333994 | 20-99 | ◐ LIKELY ACTIVE |
Sure Tool & Mfg. Co., INC. | Dayton | OH | Machinery Manufacturing333514 | 1-19 | ◐ LIKELY ACTIVE |
| SMSweet Manufacturing Company | Springfield | OH | Machinery Manufacturing333922 | 20-99 | ◐ LIKELY ACTIVE |
| TTTaylor-winfield Technologies, INC. | Youngstown | OH | Machinery Manufacturing333511 | 20-99 | ▲ REPORTED CLOSED |
Telesis Technologies, INC | Circleville | OH | Machinery Manufacturing333517 | 20-99 | ◐ LIKELY ACTIVE |
| TBThe Bonnot Company | Akron | OH | Machinery Manufacturing333249 | 20-99 | ◐ LIKELY ACTIVE |
| TCThe Capital Tool Company | Cleveland | OH | Machinery Manufacturing333514 | 1-19 | ◐ LIKELY ACTIVE |
| UTUS Tanazawa Corporation | Batavia | OH | Fabricated Metal Product Manufacturing332812 | 1-19 | ◐ LIKELY ACTIVE |
| WRWarren Rupp, INC. | Mansfield | OH | Machinery Manufacturing333911 | 100-499 | ◐ LIKELY ACTIVE |
| ZIZed Industries, Inc | Vandalia | OH | Machinery Manufacturing333249 | 20-99 | ◐ LIKELY ACTIVE |
| BBBucyrus Blades INC | Bucyrus | OH | Machinery Manufacturing333120 | — | ◐ LIKELY ACTIVE |
| CECrown Equipment CORP | New Knoxville | OH | Machinery Manufacturing333924 | — | ◐ LIKELY ACTIVE |
| CECrown Equipment CORP | New Bremen | OH | Machinery Manufacturing333924 | — | ◐ LIKELY ACTIVE |
| CHCustom Hoists INC | Hayesville | OH | Machinery Manufacturing333995 | — | ◐ LIKELY ACTIVE |
| EIEaton Industrial Corporation | Cleveland | OH | Machinery Manufacturing333248 | — | ◐ LIKELY ACTIVE |
| EPEmpire Plow Company | Cleveland | OH | Machinery Manufacturing333111 | 1-19 | ◐ LIKELY ACTIVE |
| FRFurukawa Rock Drill USA INC (1667040039) | Kent | OH | Machinery Manufacturing333998 | 20-99 | ◐ LIKELY ACTIVE |
| GIGradall Industries INC. (0679020076) | New Philadelphia | OH | Machinery Manufacturing333120 | — | ◐ LIKELY ACTIVE |
| GEGsc Enterprises INC | Mansfield | OH | Machinery Manufacturing333995 | 1-19 | ◐ LIKELY ACTIVE |
| HPHobart Plant 27 | Troy | OH | Machinery Manufacturing333241 | — | ◐ LIKELY ACTIVE |
| IPIntelligrated Products LLC | London | OH | Machinery Manufacturing333922 | — | ◐ LIKELY ACTIVE |
| JFJbt Foodtech | Sandusky | OH | Machinery Manufacturing333241 | — | ◐ LIKELY ACTIVE |
| MDMartin Diesel INC | Defiance | OH | Machinery Manufacturing333618 | 1-19 | ◐ LIKELY ACTIVE |
| MNMcneil & Nrm, INC. | Akron | OH | Machinery Manufacturing333220 | 20-99 | ◐ LIKELY ACTIVE |
| MTMettler Toledo (0125041956) | Worthington | OH | Machinery Manufacturing333997 | — | ◐ LIKELY ACTIVE |