| Advanced Precision Machining, Inc Milling, Welding, EDM, Finishing · AS9100 | Garden City, ID | MillingWeldingEDMFinishing | AS9100 |
| Boise Metal Works Welding, Waterjet | Boise, ID | WeldingWaterjet | - |
| C + C Mfg Milling, Bending, Welding, Grinding, Finishing | Garden City, ID | MillingBendingWeldingGrindingFinishing | - |
| CJ Precision Machine Inc Milling, Turning, Welding, Finishing · ISO 9001 | Boise, ID | MillingTurningWeldingFinishing | ISO 9001 |
| Gem State Metals Bending, Welding | Garden City, ID | BendingWelding | - |
| Homebase Machining LLC Milling, Turning | Meridian, ID | MillingTurning | - |
| Lasasco Inc Punching, Bending, Welding | Boise, ID | PunchingBendingWelding | - |
| Layne West Manufacturing LLC Milling, Swiss, Welding, Grinding | Boise, ID | MillingSwissWeldingGrinding | - |
| Liberty CNC LLC Milling, Turning, Finishing · ISO 9001 | Cocolalla, ID | MillingTurningFinishing | ISO 9001 |
| Marvel Manufacturing Milling, Turning, Swiss, Welding, EDM, Grinding, Finishing | Lewiston, ID | MillingTurningSwissWeldingEDMGrindingFinishing | - |
| NW4S Inc Milling, Punching, Bending, Welding, Stamping, EDM, Finishing · ISO 9001, AS9100 | Lewiston, ID | MillingPunchingBendingWeldingStampingEDMFinishing | ISO 9001, AS9100 |
| Pend Oreille Precision, LLC Milling, Turning, Laser · ISO 9001, AS9100 | Clark Fork, ID | MillingTurningLaser | ISO 9001, AS9100 |
| Sapphire Metal Finishing, Inc Finishing · ISO 9001, NADCAP | Caldwell, ID | Finishing | ISO 9001, NADCAP |
| Teton Machine Co Milling, Turning · ISO 9001, AS9100, ITAR | Payette, ID | MillingTurning | ISO 9001, AS9100, ITAR |
| Weld Pro Bending, Welding, Waterjet | Boise, ID | BendingWeldingWaterjet | - |
| Woodland Manufacturing Welding | Meridian, ID | Welding | - |
| Woody's Sheet Metal Bending, Welding | Boise, ID | BendingWelding | - |