| RGReliable Galvanizing CO INC | Chicago | IL | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| RARippel Architectural Metals INC | Chicago | IL | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| RSR S Owens and Company | Chicago | IL | Fabricated Metal Product Manufacturing332215 | — | ◇ UNVERIFIED |
| SPScientific Plating CO. INC | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| SCSilgan Closures LLC #35 | Chicago | IL | Fabricated Metal Product Manufacturing332115 | — | ◇ UNVERIFIED |
| SHSk Hand Tool CORP | Chicago | IL | Fabricated Metal Product Manufacturing332212 | — | ◇ UNVERIFIED |
| SISkw Industries LLC | Chicago | IL | Fabricated Metal Product Manufacturing332812 | 20-99 | ◇ UNVERIFIED |
| SPSpecified Plating CO | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| TSTempel Steel Company LLC | Chicago | IL | Fabricated Metal Product Manufacturing332116 | — | ◇ UNVERIFIED |
| UMUnited Metal Finishers | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| UMUS Motor Recycling | Chicago | IL | Fabricated Metal Product Manufacturing332618 | — | ◇ UNVERIFIED |
| VAVp Anodizing | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| VPVp Plating | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| WSWesco Spring CO | Chicago | IL | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| YPYale Polishing & Plating | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| AAA & a Logistics and Supplies Inc., | Chicago | IL | Fabricated Metal Product Manufacturing332722 | — | ◐ LIKELY ACTIVE |
| AMArdagh Metal Packaging - Chicago | Chicago | IL | Fabricated Metal Product Manufacturing332431 | 100-499 | ◐ LIKELY ACTIVE |
Bearing Sales Corporation dba Isostatic Industries Inc. | Chicago | IL | Fabricated Metal Product Manufacturing332117 | 20-99 | ◐ LIKELY ACTIVE |
| BCBway Chicago | Chicago | IL | Fabricated Metal Product Manufacturing332431 | 100-499 | ◐ LIKELY ACTIVE |
| CIChicago Illinois | Chicago | IL | Fabricated Metal Product Manufacturing332439 | 1-19 | ◐ LIKELY ACTIVE |
| CChicago (Temtco) | Chicago | IL | Fabricated Metal Product Manufacturing332313 | 20-99 | ◐ LIKELY ACTIVE |
| CMCleats, Mfg. | Chicago | IL | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
| CGClimate Guard | Chicago | IL | Fabricated Metal Product Manufacturing332321 | 100-499 | ◐ LIKELY ACTIVE |
| EIEdwards International LLC | Chicago | IL | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| ETErva Tool & Die Co., Inc. | Chicago | IL | Fabricated Metal Product Manufacturing332119 | 20-99 | ◐ LIKELY ACTIVE |
| HHHarmony Haven Establishment LLC | Chicago | IL | Fabricated Metal Product Manufacturing332323 | — | ◐ LIKELY ACTIVE |
| HPH&K Perforating LLC | Chicago | IL | Fabricated Metal Product Manufacturing332119 | 1-19 | ◐ LIKELY ACTIVE |
| MMauser | Chicago | IL | Fabricated Metal Product Manufacturing332439 | 20-99 | ◐ LIKELY ACTIVE |
| NHNew Hudson Facades - IL | Chicago | IL | Fabricated Metal Product Manufacturing332323 | 1-19 | ◐ LIKELY ACTIVE |
| PSParagon Spring Company | Chicago | IL | Fabricated Metal Product Manufacturing332613 | — | ◐ LIKELY ACTIVE |
| RMRi-del Manufacturing INC | Chicago | IL | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| RRockfon | Chicago | IL | Fabricated Metal Product Manufacturing332323 | 100-499 | ◐ LIKELY ACTIVE |
| SOSp One Global Group INC | Chicago | IL | Fabricated Metal Product Manufacturing332722 | — | ◐ LIKELY ACTIVE |
| TAThe Advance Equipment Manufacturing Co. | Chicago | IL | Fabricated Metal Product Manufacturing332216 | 20-99 | ◐ LIKELY ACTIVE |
| WSWorthington Steel Company Chicago | Chicago | IL | Fabricated Metal Product Manufacturing332119 | 100-499 | ◐ LIKELY ACTIVE |
| WEW.W. Engineering | Chicago | IL | Fabricated Metal Product Manufacturing332420 | 20-99 | ◐ LIKELY ACTIVE |
| OLOptimum Logistic Solutions LLC | Chicago | IL | Fabricated Metal Product Manufacturing332439 | — | ◐ LIKELY ACTIVE |
| AMAbbey Metal Services, INC | Chicago | IL | Fabricated Metal Product Manufacturing332999 | 1-19 | ◇ UNVERIFIED |
| ASAdvanced Security Group INC | Chicago | IL | Fabricated Metal Product Manufacturing332510 | 1-19 | ◇ UNVERIFIED |
| AEAdvance Enameling CO | Chicago | IL | Fabricated Metal Product Manufacturing332812 | 20-99 | ◇ UNVERIFIED |
| BMBright Metal Finishing CO | Chicago | IL | Fabricated Metal Product Manufacturing332813 | 1-19 | ◇ UNVERIFIED |
| CMChicago Metal Polishing | Chicago | IL | Fabricated Metal Product Manufacturing332710 | 1-19 | ◇ UNVERIFIED |
| CWContinental Windows and Glass Corporation | Chicago | IL | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◇ UNVERIFIED |
| MSMagnus Screw Products | Chicago | IL | Fabricated Metal Product Manufacturing332722 | 1-19 | ◇ UNVERIFIED |
| OMO'Brien Metal Inc. | Chicago | IL | Fabricated Metal Product Manufacturing332323 | 1-19 | ◇ UNVERIFIED |
| PPetro-chem | Chicago | IL | Fabricated Metal Product Manufacturing332410 | 1-19 | ◇ UNVERIFIED |
| SAScott Abott Mfg | Chicago | IL | Fabricated Metal Product Manufacturing332710 | 20-99 | ◇ UNVERIFIED |
| TMTelco Machine and Mfg., INC. | Chicago | IL | Fabricated Metal Product Manufacturing332710 | 1-19 | ◇ UNVERIFIED |
| TFThe Finishing Touch | Chicago | IL | Fabricated Metal Product Manufacturing332813 | 1-19 | ◇ UNVERIFIED |
| TITriton Industries INC | Chicago | IL | Fabricated Metal Product Manufacturing332812 | 20-99 | ◇ UNVERIFIED |