| PTPrecision Tool Group | Towanda | IL | Fabricated Metal Product Manufacturing332212 | 20-99 | ◇ UNVERIFIED |
| QPQc Powder | Villa Park | IL | Fabricated Metal Product Manufacturing332812 | 20-99 | ◇ UNVERIFIED |
| RLRl Lewis Industries INC | Pekin | IL | Fabricated Metal Product Manufacturing332710 | 20-99 | ◇ UNVERIFIED |
| SShopwerks | Braceville | IL | Fabricated Metal Product Manufacturing332813 | 1-19 | ◇ UNVERIFIED |
| SSmf | Minonk | IL | Fabricated Metal Product Manufacturing332312 | 100-499 | ◇ UNVERIFIED |
| SPStack-on Products | Wauconda | IL | Fabricated Metal Product Manufacturing332439 | — | ◇ UNVERIFIED |
| SMSuperior Metalcraft INC | Lansing | IL | Fabricated Metal Product Manufacturing332439 | 1-19 | ◇ UNVERIFIED |
| VBVaughan & Bushnell Mfg CO | Hebron | IL | Fabricated Metal Product Manufacturing332212 | 100-499 | ◇ UNVERIFIED |
| WIWear-cote International INC | Rock Island | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| AAA & a Steel Fabricating CO | Posen | IL | Fabricated Metal Product Manufacturing332312 | 1-19 | ◐ LIKELY ACTIVE |
| AMAccurate Metal Fabricating Cicero | Cicero | IL | Fabricated Metal Product Manufacturing332439 | 100-499 | ◐ LIKELY ACTIVE |
| AIAerofast INC | Carol Stream | IL | Fabricated Metal Product Manufacturing332722 | 20-99 | ◐ LIKELY ACTIVE |
| AMAllied Machine Tool & Die INC | Crestwood | IL | Fabricated Metal Product Manufacturing332710 | 1-19 | ◐ LIKELY ACTIVE |
| AWAnzelc Welding & Fabricating, INC. | Rockdale | IL | Fabricated Metal Product Manufacturing332313 | 20-99 | ◐ LIKELY ACTIVE |
| AFA.s. Fabricating, INC. | Mount Vernon | IL | Fabricated Metal Product Manufacturing332999 | 1-19 | ◐ LIKELY ACTIVE |
| BABall Aerosol & Specialty Cont | Danville | IL | Fabricated Metal Product Manufacturing332431 | — | ◐ LIKELY ACTIVE |
| BPBar Processing Corporation | Chicago Heights | IL | Fabricated Metal Product Manufacturing332813 | 20-99 | ◐ LIKELY ACTIVE |
| BTBar Technologies LLC | Geneva | IL | Fabricated Metal Product Manufacturing332813 | 20-99 | ◐ LIKELY ACTIVE |
| BEB. E. C. Mechanical, Inc. | Ogden | IL | Fabricated Metal Product Manufacturing332322 | 1-19 | ◐ LIKELY ACTIVE |
| BCBest Cutting Die Company | Skokie | IL | Fabricated Metal Product Manufacturing332216 | 100-499 | ◐ LIKELY ACTIVE |
| BTBluewater Thermal Solutions - Chicago 3 | Melrose Park | IL | Primary Metal Manufacturing331110 | 20-99 | ◐ LIKELY ACTIVE |
| CLCamcar LLC | Belvidere | IL | Fabricated Metal Product Manufacturing332722 | — | ◐ LIKELY ACTIVE |
| CGChicago Grinding and Machine Company | Melrose Park | IL | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| CHChicago Hardware & Fixture CO | Franklin Park | IL | Fabricated Metal Product Manufacturing332510 | 20-99 | ◐ LIKELY ACTIVE |
| CIColony INC | Elgin | IL | Fabricated Metal Product Manufacturing332618 | — | ◐ LIKELY ACTIVE |
| CCConex Cable LLC | Dekalb | IL | Fabricated Metal Product Manufacturing332812 | — | ◐ LIKELY ACTIVE |
| CSContour Screw Products INC | Arlington Heights | IL | Fabricated Metal Product Manufacturing332721 | 20-99 | ◐ LIKELY ACTIVE |
| CMCorrugated Metals INC | Belvidere | IL | Fabricated Metal Product Manufacturing332114 | 20-99 | ◐ LIKELY ACTIVE |
| CMCorrugated Metals, INC. | Belvidere | IL | Fabricated Metal Product Manufacturing332114 | 20-99 | ◐ LIKELY ACTIVE |
| CCCrown Cork & Seal USA, Inc - Alsip Plant | Alsip | IL | Fabricated Metal Product Manufacturing332431 | 20-99 | ◐ LIKELY ACTIVE |
| DADavid Architectural Metals INC | Chicago | IL | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| DMDiversified Metal Products | Northbrook | IL | Fabricated Metal Product Manufacturing332322 | 1-19 | ◐ LIKELY ACTIVE |
| DVDixon Valve | Westmont | IL | Fabricated Metal Product Manufacturing332721 | — | ◐ LIKELY ACTIVE |
| DMDonlon Manufacturing LLC | Arlington Heights | IL | Fabricated Metal Product Manufacturing332710 | 1-19 | ◐ LIKELY ACTIVE |
| DIDynomax, Inc. | Wheeling | IL | Fabricated Metal Product Manufacturing332710 | 100-499 | ◐ LIKELY ACTIVE |
| EHEaton Hydraulics | Machesney Park | IL | Fabricated Metal Product Manufacturing332322 | — | ◐ LIKELY ACTIVE |
| EPElectronic Plating CO INC | Cicero | IL | Fabricated Metal Product Manufacturing332812 | — | ◐ LIKELY ACTIVE |
| EPEnchro Plating LTD | Melrose Park | IL | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| EFEngineered Fluid INC | Centralia | IL | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| FOFreeway of Rockford | Rockford | IL | Fabricated Metal Product Manufacturing332722 | — | ◐ LIKELY ACTIVE |
| GAGears and Sprockets Headquarters INC | Broadview | IL | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| GAGe Aviation Systems LLC | Loves Park | IL | Fabricated Metal Product Manufacturing332911 | — | ◐ LIKELY ACTIVE |
| GPGeneral Plating CO INC | Addison | IL | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| GSGeneral Surface Hardening | Chicago | IL | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| GSGilbert Spring Corporation | Chicago | IL | Fabricated Metal Product Manufacturing332613 | 20-99 | ◐ LIKELY ACTIVE |
| GMGray Machine and Welding, INC. | Rock Island | IL | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| HMHalter Machine Shop INC | Lawrenceville | IL | Fabricated Metal Product Manufacturing332710 | 1-19 | ◐ LIKELY ACTIVE |
| HSHanley Steel, Inc. | Peoria | IL | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| HIHpz INC | Toledo | IL | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| IMIntegrity Machining, INC | Augusta | IL | Fabricated Metal Product Manufacturing332710 | 1-19 | ◐ LIKELY ACTIVE |