| AIAnpec Ind | Pecatonica | — | ◇ UNVERIFIED |
| 4M425 Manufacturing, Inc. | Rockford | — | ◇ UNVERIFIED |
| 4M425 MFG Enterprises, LLC | Rockford | — | ◇ UNVERIFIED |
| AGAzz Galvanizing Dba Rogers Bros Galvanizing LLC | Rockford | — | ◇ UNVERIFIED |
| BFBarron Finishing Technologies INC | Rockford | — | ◇ UNVERIFIED |
| BMBarron Metal Finishing LLC | Rockford | — | ◇ UNVERIFIED |
| BMBarron Metal Finishing, LLC | Rockford | — | ◇ UNVERIFIED |
| BHBeechner Heat Treating CO INC | Rockford | — | ◇ UNVERIFIED |
| CACamcar Aerospace | Rockford | — | ◇ UNVERIFIED |
| CMCq+ Mfg Group | Machesney Park | — | ◇ UNVERIFIED |
| CMCrown Machine, INC. | Rockford | — | ◇ UNVERIFIED |
 Custom Iron Works, INC. | South Beloit | — | ◇ UNVERIFIED |
| CACvt Acquisition, INC. Dba Cherry Valley Tool & Mac | Rockford | — | ◇ UNVERIFIED |
| DBDenise & Brian, LLC | Rockford | — | ◇ UNVERIFIED |
| EIEclipse INC | Rockford | — | ◇ UNVERIFIED |
| EREver Ready Grinding & Pin Manufacturing LLC | Rockford | — | ◇ UNVERIFIED |
| FGForge Group Rockford LLC | Rockford | — | ◇ UNVERIFIED |
| FSForging & Stampings, INC. | Rockford | — | ◇ UNVERIFIED |
| GTGalactic Tool of Rockford Corporation | Rockford | — | ◇ UNVERIFIED |
| GPGoat Precision Machining LLC | Rockford | — | ◇ UNVERIFIED |
| HSHamilton Sundstrand CORP | Rockford | — | ◇ UNVERIFIED |
| HIHennig, INC. Marlin | Machesney Park | — | ◇ UNVERIFIED |
| JMJLC Machesney, LLC | Machesney Park | — | ◇ UNVERIFIED |
| JPJ&M Plating, Inc. | Rockford | — | ◇ UNVERIFIED |
| KPKadon Precision Machining, INC. | Rockford | — | ◇ UNVERIFIED |
| KPKadon Precision Machining, LLC | Rockford | — | ◇ UNVERIFIED |
| LELeading Edge Group, INC. | Rockford | — | ◇ UNVERIFIED |
| MPMasters Plating | Rockford | — | ◇ UNVERIFIED |
| MMMoore Metal Finishing | Rockford | — | ◇ UNVERIFIED |
| NLNorth Line Properties LLC | Machesney Park | — | ◇ UNVERIFIED |
| PDP D Q Machine, INC. | Machesney Park | — | ◇ UNVERIFIED |
| RTRestoration Tools, LLC | Rockford | — | ◇ UNVERIFIED |
| RMRusco Manufacturing INC | Machesney Park | — | ◇ UNVERIFIED |
| SPSafeway Products | Rockford | — | ◇ UNVERIFIED |
| SCSeal-rite CORP. | Rockford | — | ◇ UNVERIFIED |
| SSSecondary Solutions, Inc. | Rockford | — | ◇ UNVERIFIED |
| SSSos Soda Blasting, INC. | Rockford | — | ◇ UNVERIFIED |
| SCSpider Company INC | Machesney Park | — | ◇ UNVERIFIED |
| SMSuperior Metal Finishing, INC. | Loves Park | — | ◇ UNVERIFIED |
| TFTextron Fastening Systems INC | Rockford | — | ◇ UNVERIFIED |
| TEThomas Engineering INC. | Rockford | — | ◇ UNVERIFIED |
| TCTorrington CO | Rockford | — | ◇ UNVERIFIED |
| UTUnited Tooler of Illinois | Loves Park | — | ◇ UNVERIFIED |
| UOUsdol Osha- North Aurora | Rockford | — | ◇ UNVERIFIED |
| UOUsdol Osha- North Aurora | Rockford | — | ◇ UNVERIFIED |
| WTWilson Tool Corporation | Rockford | — | ◇ UNVERIFIED |
| ZFZip Fasteners Products, INC. | Rockford | — | ◇ UNVERIFIED |
