| AGAction Group INC | Blacklick | OH | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| AWAhresty Wilmington CORP | Wilmington | OH | Primary Metal Manufacturing331315 | 500+ | ◐ LIKELY ACTIVE |
| ABAkron Brass CO | Wooster | OH | Primary Metal Manufacturing331529 | 100-499 | ◐ LIKELY ACTIVE |
| ABAmerican Bronze Corporation | Cleveland | OH | Primary Metal Manufacturing331522 | 20-99 | ◐ LIKELY ACTIVE |
| AAApex Aluminum Die Casting Co., INC. | Piqua | OH | Primary Metal Manufacturing331521 | 20-99 | ◐ LIKELY ACTIVE |
| AMArmor Metal Group | Mason | OH | Primary Metal Manufacturing331521 | 100-499 | ◐ LIKELY ACTIVE |
| BCB & C Castings | Barberton | OH | Primary Metal Manufacturing331316 | 20-99 | ◐ LIKELY ACTIVE |
| CMCarter Machine Co. Inc. | Galion | OH | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| CACelina Aluminum Precision Tech | Celina | OH | Primary Metal Manufacturing331524 | 100-499 | ◐ LIKELY ACTIVE |
| CMCircle Machine Rolls, INC. | Sebring | OH | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| CSCleveland-cliffs Steel Corporation - Zanesville Works | Zanesville | OH | Primary Metal Manufacturing331110 | 100-499 | ◐ LIKELY ACTIVE |
| CPConsolidated Precision Products | Euclid | OH | Primary Metal Manufacturing331512 | 100-499 | ◐ LIKELY ACTIVE |
| FMFerroglobe Metallurgical | Waterford | OH | Primary Metal Manufacturing331110 | 100-499 | ◐ LIKELY ACTIVE |
| FRFort Recovery Industries INC | Fort Recovery | OH | Primary Metal Manufacturing331523 | 100-499 | ◐ LIKELY ACTIVE |
| FCFulton County Processing LTD | Delta | OH | Primary Metal Manufacturing331221 | 100-499 | ◐ LIKELY ACTIVE |
| GEGeneral Extrusions INC | Youngstown | OH | Primary Metal Manufacturing331316 | 100-499 | ◐ LIKELY ACTIVE |
| GSGkn Sinter Metals | Gallipolis | OH | Primary Metal Manufacturing331110 | 100-499 | ◐ LIKELY ACTIVE |
| HCHarbor Castings, INC. | Cuyahoga Falls | OH | Primary Metal Manufacturing331512 | 100-499 | ◐ LIKELY ACTIVE |
| HMHildreth Mfg LLC | Marion | OH | Primary Metal Manufacturing331522 | 20-99 | ◐ LIKELY ACTIVE |
| IMInternational Metal Hose Company | Bellevue | OH | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| JTJackson Tube Services INC | Piqua | OH | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| KAKaiser Aluminum | Heath | OH | Primary Metal Manufacturing331312 | 100-499 | ◐ LIKELY ACTIVE |
| MBMahle Behr Mt Sterling INC | Mount Sterling | OH | Primary Metal Manufacturing331318 | 100-499 | ◐ LIKELY ACTIVE |
| MEMahle Engine Components USA INC | Mcconnelsville | OH | Primary Metal Manufacturing331314 | 20-99 | ◐ LIKELY ACTIVE |
| MMMajor Metals Company | Mansfield | OH | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| MMancor | Dayton | OH | Primary Metal Manufacturing331512 | 100-499 | ◐ LIKELY ACTIVE |
| MUMatalco Usa, LLC | Lordstown | OH | Primary Metal Manufacturing331314 | 500+ | ◐ LIKELY ACTIVE |
| MBMaterion Brush INC | Lorain | OH | Primary Metal Manufacturing331314 | 20-99 | ◐ LIKELY ACTIVE |
| MSMcdonald Steel CORP | Mc Donald | OH | Primary Metal Manufacturing331111 | 1-19 | ◐ LIKELY ACTIVE |
| MBMiba Bearings US LLC | Mc Connelsville | OH | Primary Metal Manufacturing331314 | 500+ | ◐ LIKELY ACTIVE |
| MCMulti-cast CORP | Wauseon | OH | Primary Metal Manufacturing331521 | 20-99 | ◐ LIKELY ACTIVE |
| NANeturen America Corporation | Hamilton | OH | Primary Metal Manufacturing331222 | 20-99 | ◐ LIKELY ACTIVE |
| OAOhio Aluminum Industries INC. | Cleveland | OH | Primary Metal Manufacturing331524 | 100-499 | ◐ LIKELY ACTIVE |
| OPOhio Pickling & Processing | Toledo | OH | Primary Metal Manufacturing331221 | 100-499 | ◐ LIKELY ACTIVE |
| OSOlympic Steel | Bedford Heights | OH | Primary Metal Manufacturing331221 | 500+ | ◐ LIKELY ACTIVE |
| OIOsco Industries INC - Jackson Div | Jackson | OH | Primary Metal Manufacturing331511 | 100-499 | ◐ LIKELY ACTIVE |
Powder Alloy CORP | Loveland | OH | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| PTProduction Tube Cutting | Dayton | OH | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| RERimer Enterprises INC | Waterville | OH | Primary Metal Manufacturing331512 | 20-99 | ◐ LIKELY ACTIVE |
| RHRyder Heil Bronze INC | Bucyrus | OH | Primary Metal Manufacturing331523 | 20-99 | ◐ LIKELY ACTIVE |
| SISancast INC | Coshocton | OH | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| SEStar Extruded Shapes | Canfield | OH | Primary Metal Manufacturing331314 | 100-499 | ◐ LIKELY ACTIVE |
| TSThomas Steel Strip CORP | Warren | OH | Primary Metal Manufacturing331221 | 100-499 | ◐ LIKELY ACTIVE |
| TTTooling Technology | Fort Loramie | OH | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| TLTri-cast LTD | Akron | OH | Primary Metal Manufacturing331313 | 20-99 | ◐ LIKELY ACTIVE |
| URUnited Rolls INC | Canton | OH | Primary Metal Manufacturing331511 | 100-499 | ◐ LIKELY ACTIVE |
| VIVwm-republic, INC. | Cleveland | OH | Primary Metal Manufacturing331410 | 1-19 | ◐ LIKELY ACTIVE |
| WCWorthington Cylinder Corporation | Westerville | OH | Primary Metal Manufacturing331221 | 100-499 | ◐ LIKELY ACTIVE |
| WSWorthington Steel (0326000076) | Delta | OH | Primary Metal Manufacturing331221 | 100-499 | ◐ LIKELY ACTIVE |
| WSWorthington Steel CO | Columbus | OH | Primary Metal Manufacturing331221 | 100-499 | ◐ LIKELY ACTIVE |