| SSSafeway Services | Rockford | IL | Fabricated Metal Product Manufacturing332812 | — | ◐ LIKELY ACTIVE |
| SASawing and Shearing Services, Inc. | Blue Island | IL | Fabricated Metal Product Manufacturing332313 | 20-99 | ◐ LIKELY ACTIVE |
| SPSlidematic Precision Components | Rockford | IL | Fabricated Metal Product Manufacturing332722 | 100-499 | ◐ LIKELY ACTIVE |
| SCSollami CO | Herrin | IL | Fabricated Metal Product Manufacturing332721 | 20-99 | ◐ LIKELY ACTIVE |
Sterling Spring LLC 65th | Bedford Park | IL | Fabricated Metal Product Manufacturing332611 | 20-99 | ◐ LIKELY ACTIVE |
| TATimken Aurora Bearing Company | Montgomery | IL | Fabricated Metal Product Manufacturing332991 | — | ◐ LIKELY ACTIVE |
| TMTitan Metals INC | Glendale Heights | IL | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
| TMTomenson Machine Works | West Chicago | IL | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| TTTrend Technologies | Elk Grove Village | IL | Fabricated Metal Product Manufacturing332112 | 100-499 | ◐ LIKELY ACTIVE |
| TRT. R. Machine, INC. | Davis | IL | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| TPTru-coat Plating | Bellwood | IL | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| TMTru-cut Machine INC | Saint Anne | IL | Fabricated Metal Product Manufacturing332710 | 1-19 | ◐ LIKELY ACTIVE |
| UCUS Conveyor Technologies Mfg | Mackinaw | IL | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| UPUS Plating CO | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| WMWalters Metal Fabrication | Granite City | IL | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| WSWaukegan Steel, LLC. | Waukegan | IL | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| WEWest End Tool & Die | Joliet | IL | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| WIWestermeyer Industries, Inc. | Bluffs | IL | Fabricated Metal Product Manufacturing332420 | 20-99 | ◐ LIKELY ACTIVE |
| WCWindy City Wire Cable and Technology Products, LLC | Bolingbrook | IL | Fabricated Metal Product Manufacturing332618 | — | ◐ LIKELY ACTIVE |
| WIWiremasters, Incorporated | Chicago | IL | Fabricated Metal Product Manufacturing332618 | 20-99 | ◐ LIKELY ACTIVE |
| WIWoodward INC | Rockford | IL | Fabricated Metal Product Manufacturing332912 | — | ◐ LIKELY ACTIVE |
| AIAlum-i-tank, INC. | Harvard | IL | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| AMAmerican Metal Fibers, Incorporated | Lake Bluff | IL | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| ANAmerican Nickel Works | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| ARA & R Custom Chrome Plating | Bedford Park | IL | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| AIAstroblast INC | Elgin | IL | Fabricated Metal Product Manufacturing332813 | 1-19 | ◐ LIKELY ACTIVE |
| AIAtkore International | Harvey | IL | Fabricated Metal Product Manufacturing332996 | 500+ | ◐ LIKELY ACTIVE |
| BIBalas INC. | Batavia | IL | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| CTCalumet Tank & Equipment CO | Chicago | IL | Fabricated Metal Product Manufacturing332420 | — | ◐ LIKELY ACTIVE |
| CICamcraft INC | Bartlett | IL | Fabricated Metal Product Manufacturing332721 | — | ◐ LIKELY ACTIVE |
| CIChem-plate Industries INC | Elk Grove Village | IL | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| CCCmc Coating Toltec Steel | Kankakee | IL | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| CMCq+ Mfg Group | Machesney Park | IL | Fabricated Metal Product Manufacturing332721 | — | ◐ LIKELY ACTIVE |
| CBCrown Beverage Packaging | Bradley | IL | Fabricated Metal Product Manufacturing332431 | — | ◐ LIKELY ACTIVE |
| CMCrown Machine, INC. | Rockford | IL | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| CPCrystal Precision Drilling, Inc. | Loves Park | IL | Fabricated Metal Product Manufacturing332999 | 1-19 | ◐ LIKELY ACTIVE |
| DPDavies Plating INC | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| DRDiesel Radiator INC | Melrose Park | IL | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| DCDuffy CO | Palatine | IL | Fabricated Metal Product Manufacturing332811 | 1-19 | ◐ LIKELY ACTIVE |
| DIDur-o-wal Inc-formerly | Aurora | IL | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| EMEdsal Manufacturing CO INC | Chicago | IL | Fabricated Metal Product Manufacturing332119 | — | ◐ LIKELY ACTIVE |
| ETEklind Tool CO | Franklin Park | IL | Fabricated Metal Product Manufacturing332212 | — | ◐ LIKELY ACTIVE |
| ECE/m Coating Services | Lombard | IL | Fabricated Metal Product Manufacturing332812 | — | ◐ LIKELY ACTIVE |
| EHEnsar Handi Foil | Wheeling | IL | Fabricated Metal Product Manufacturing332999 | 100-499 | ◐ LIKELY ACTIVE |
| ECExcel Color CORP | Elk Grove Village | IL | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| FAFabricating and Welding CORP | Chicago | IL | Fabricated Metal Product Manufacturing332312 | 1-19 | ◐ LIKELY ACTIVE |
| FGForge Group Cardinal LLC Dba Cardinal Forge Company | Rochelle | IL | Fabricated Metal Product Manufacturing332112 | — | ◐ LIKELY ACTIVE |
| FGForge Group Rockford LLC | Rockford | IL | Fabricated Metal Product Manufacturing332111 | — | ◐ LIKELY ACTIVE |
| GHG2 Hinge Company | Bloomingdale | IL | Fabricated Metal Product Manufacturing332311 | 20-99 | ◐ LIKELY ACTIVE |
| GWGraham Welding | Decatur | IL | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |