| Faustson Tool Milling, Turning, EDM | Arvada, CO | MillingTurningEDM | - |
| 3 J Inc Milling · AS9100 | Wellington, CO | Milling | AS9100 |
| 4K Machining Milling, Casting, Finishing · ITAR | Elizabeth, CO | MillingCastingFinishing | ITAR |
| Colorado Machine Works, Inc. Milling, Turning | Colorado Springs, CO | MillingTurning | - |
| Cutter Innovations, LLC Milling, Turning, EDM · AS9100 | Wheat Ridge, CO | MillingTurningEDM | AS9100 |
| Dynamic Design & Manufacturing Inc Laser, Punching, Bending, Welding, EDM · ISO 9001, AS9100, ITAR | Niwot, CO | LaserPunchingBendingWeldingEDM | ISO 9001, AS9100, ITAR |
| Eccentroid LLC Milling, Welding, Stamping | Loveland, CO | MillingWeldingStamping | - |
| Electro Mechanical Products Assembly · ISO 9001 | Lakewood, CO | Assembly | ISO 9001 |
| Falcon Prototyping & Machine LLC Milling, Turning, Swiss, Punching, Bending, Welding, EDM, Grinding | Peyton, CO | MillingTurningSwissPunchingBendingWeldingEDMGrinding | - |
| Franco Machine Milling, Turning, Welding · AS9100, ITAR | Loma, CO | MillingTurningWelding | AS9100, ITAR |
| Hexagon Machine & Manufacturing LLC Milling, Assembly · ISO 9001, AS9100 | Longmont, CO | MillingAssembly | ISO 9001, AS9100 |
| Integrity Welding & Fabrication LLC Laser, Waterjet, Welding, Finishing | Colorado Springs, CO | LaserWaterjetWeldingFinishing | - |
| Kineo, Inc Milling, Turning, EDM, Grinding, Finishing · ISO 9001, ISO 13485 | Colorado Springs, CO | MillingTurningEDMGrindingFinishing | ISO 9001, ISO 13485 |
| Mace Manufacturing Milling, Welding · ISO 9001, AS9100 | Englewood, CO | MillingWelding | ISO 9001, AS9100 |
| Majestic Metals by Fathom Manufacturing Milling, Turning, Bending, Laser, Welding, Waterjet, EDM, Casting, Metal AM · ISO 9001, AS9100, ITAR, ISO 13485 | Denver, CO | MillingTurningBendingLaserWeldingWaterjetEDMCastingMetal AM | ISO 9001, AS9100, ITAR, ISO 13485 |
| MBK Machine Corp Milling, Turning, Laser, EDM, Grinding · ITAR | Mead, CO | MillingTurningLaserEDMGrinding | ITAR |
| Mechfi Designs LLC Milling, Turning, Finishing | Westminster, CO | MillingTurningFinishing | - |
| Metalcraft Industries, Inc Welding, Stamping, Finishing, Assembly · CMMC | Denver, CO | WeldingStampingFinishingAssembly | CMMC |
| Metro Machine Inc Milling, Turning, Grinding · ISO 9001, AS9100, ITAR | Englewood, CO | MillingTurningGrinding | ISO 9001, AS9100, ITAR |
| Micro Metals Inc Milling, Laser, Waterjet, Punching, Bending, Welding | Colorado Springs, CO | MillingLaserWaterjetPunchingBendingWelding | - |
| Peak Custom Fabrication Bending, Welding | Colorado Springs, CO | BendingWelding | - |
| PJ Machine LLC Milling, Turning, Laser, Bending, Welding, Grinding · ISO 9001, ITAR, CMMC | Clifton, CO | MillingTurningLaserBendingWeldingGrinding | ISO 9001, ITAR, CMMC |
| Prototype Casting Inc Milling, Turning, Welding, Casting | Commerce City, CO | MillingTurningWeldingCasting | - |
| R B Machine Inc Milling, Turning, Assembly · ISO 9001, AS9100 | Denver, CO | MillingTurningAssembly | ISO 9001, AS9100 |
| Rocky Mountain Waterjet, LLC Laser, Waterjet, Bending, Welding, Finishing | Greeley, CO | LaserWaterjetBendingWeldingFinishing | - |
| Steen Machining, Inc Milling, Turning, Finishing | Westminster, CO | MillingTurningFinishing | - |
| Sterling Edge Industrial Cutting, LLC Laser, Waterjet | Denver, CO | LaserWaterjet | - |
| Synergy Core Manufacturing Milling | Denver, CO | Milling | - |
| Tag Team Manufacturing Turning, Welding, Finishing · ISO 9001 | Parker, CO | TurningWeldingFinishing | ISO 9001 |
| VDH Manufacturing, LLC Turning, Swiss, Finishing · ISO 9001, ITAR, NADCAP | Erie, CO | TurningSwissFinishing | ISO 9001, ITAR, NADCAP |