| P1 | TMD Machining (Cassopolis + Plainwell)Cassopolis/Plainwell · SW MI | 50-99 | Aero | |
| P1 | Hogge Precision PartsMuskegon · SW MI | 20-49 | AeroDefMed | |
| P1 | HyTech Spring & MachinePlainwell · SW MI | 50-99 | MedAeroAuto | |
| P1 | F&F Machine ProductsElkhart · N IN | 20-49 | MedAeroAutoGen | |
| P1 | Maki Precision MachiningLa Porte · N IN | 20-49 | AeroAutoDefMed | |
| P1 | WinndeavorLa Porte · N IN | 20-49 | AeroDefMed | |
| P1 | Allied Specialty Precision (ASPI)Mishawaka · N IN | 20-49 | Aero | |
| P1 | Precision Medical TechnologiesWarsaw · N IN | 50-99 | Med | |
| P1 | Instrumental Machine & Dev (IMD)Warsaw · N IN | 20-49 | Med | |
| P1 | Instrumedical Technologies (Instru-med)Warsaw · N IN | 10-19 | Med | |
| P1 | Masterbilt, Inc.South Bend · N IN | 20-49 | AeroMedGen | |
| P1 | M&R Precision MachiningChicago (O'Hare) · N IL | 50-99 | AeroDef | |
| P1 | Superior Joining TechnologiesMachesney Park · N IL | 20-49 | Aero | |
| P1 | Panek PrecisionNorthbrook · N IL | 50-99 | DefGen | |
| P1 | Dial Machine, Inc.Rockford · N IL | 50-99 | AeroGen | |
| P1 | Kadon AerospaceRockford · N IL | 100+ | AeroDef | |
| P1 | RG Manufacturing & MachiningRockford · N IL | 20-49 | AeroDefGen | |
| P1 | Forest City GearRoscoe · N IL | 50-99 | AeroDefMed | |
| P1 | Schafer Gear WorksRoscoe · N IL | 50-99 | AeroGen | |
| P1 | Precision Process by FathomElk Grove Village · N IL | 50-99 | Med | |
| P1 | United CNC MachiningAuburn Hills · SE MI | 50-99 | AeroDef | |
| P1 | Berg Tool, Inc.Chesterfield · SE MI | 20-49 | DefGen | |
| P1 | Wyandotte IndustriesDetroit (Wyandotte) · SE MI | 50-99 | AeroDefAutoGen | |
| P1 | Rite Tool Inc.Sterling Heights area · SE MI | 20-49 | AutoAeroDefMed | |
| P1 | Modern Tech MachiningMacomb area · SE MI | 20-49 | DefAeroAuto | |
| P1 | Witco Inc.Oakland County · SE MI | 50-99 | AeroDefMedGen | |
| P1 | Prosper-Tech Machine & ToolRichmond · SE MI | 20-49 | AeroDef | |
| P1 | Advanced CNC TechnologySterling Heights · SE MI | 20-49 | AeroDefAuto | |
| P1 | NTL IndustriesSterling Heights · SE MI | 10-19 | AeroDefAutoGen | |
| P1 | FM MachineAkron · N OH | 10-19 | AeroGen | |
| P1 | Criterion Precision MachiningCleveland · N OH | 20-49 | AeroDefMed | |
| P1 | Norman Noble, Inc.Cleveland (Highland Hts) · N OH | 100+ | Med | |
| P1 | Alloy Precision TechnologiesMentor · N OH | 50-99 | AeroDefMedGen | |
| P1 | Rimeco ProductsWilloughby · N OH | 20-49 | AeroMedDef | |
| P1 | Lorain Tool EnterprisesLorain · N OH | 20-49 | Aero | |
| P1 | Jerl MachinePerrysburg · N OH | 20-49 | AeroAutoGen | |
| P2 | Owens Industries (West MI)Comstock Park · SW MI | 50-99 | AeroMed | |
| P2 | Precision Aerospace Corp (Tribus)Comstock Park/GR · SW MI | 50-99 | AeroDef | |
| P2 | Jedco Inc.Grand Rapids · SW MI | 50-99 | Aero | |
| P2 | West Michigan Precision MachiningGrand Rapids (Walker) · SW MI | 20-49 | AeroDef | |
| P2 | Berg Tool Inc. (GR ops)Grand Rapids · SW MI | 50-99 | AeroDefAuto | |
| P2 | Autocam Medical (Kentwood)Kentwood · SW MI | 100+ | Med | |
| P2 | EDM Intelligent Solutions (EDMIS)Kalamazoo · SW MI | 20-49 | AeroMedDef | |
| P2 | Nowak Machined ProductsMuskegon · SW MI | 50-99 | AutoMedGen | |
| P2 | Niles Precision CoNiles · SW MI | 100+ | Aero | |
| P2 | KCME IncPlainwell · SW MI | 10-19 | AeroGen | |
| P2 | Summit Mfg & MachiningBremen · N IN | 10-19 | MedAeroGen | |
| P2 | Micropulse Inc.Columbia City · N IN | 100+ | Med | |
| P2 | Armor Contract MfgElkhart · N IN | 50-99 | AeroDefAuto | |
| P2 | Walerko Tool & EngineeringElkhart · N IN | 20-49 | AeroDefGen | |