| Blue Waters Engineering LLC Milling · ISO 9001, AS9100, ITAR | Vancouver, WA | Milling | ISO 9001, AS9100, ITAR |
| Lakota Industries Milling, Turning · AS9100, ITAR | Marysville, WA | MillingTurning | AS9100, ITAR |
| Minter Industries LLC Milling · ISO 9001 | Lakewood, WA | Milling | ISO 9001 |
| Roberts Precision Machine Inc Milling, Turning, Swiss · ISO 9001, AS9100, ISO 13485 | Monroe, WA | MillingTurningSwiss | ISO 9001, AS9100, ISO 13485 |
| S & R Sheet Metal, Inc Laser, Punching, Bending, Welding, Finishing | Kelso, WA | LaserPunchingBendingWeldingFinishing | - |
| Streich Bros Inc Milling, Welding | Tacoma, WA | MillingWelding | - |
| A&j Custom Metals LLC Milling, Turning, Bending, Welding, Grinding | Graham, WA | MillingTurningBendingWeldingGrinding | - |
| Bluewater Industries Inc Milling, Turning, Welding, Casting, Finishing | Moses Lake, WA | MillingTurningWeldingCastingFinishing | - |
| Component Products Corp Milling, Turning, Waterjet, Punching, Bending, Stamping, Assembly · AS9100, ITAR, CMMC | Mukilteo, WA | MillingTurningWaterjetPunchingBendingStampingAssembly | AS9100, ITAR, CMMC |
| Northway Mathers Inc Milling, Turning, Waterjet, Bending, Welding, Finishing | Mukilteo, WA | MillingTurningWaterjetBendingWeldingFinishing | - |
| Onamac Industries, Inc Milling, Turning, Casting, Grinding · ISO 9001, AS9100 | Everett, WA | MillingTurningCastingGrinding | ISO 9001, AS9100 |
| Pacific Northwest Metal Fabricators Turning, Welding, Waterjet | Seattle, WA | TurningWeldingWaterjet | - |
| Tech Heavy Industries, Inc Milling, Waterjet, Bending, Welding | Riverside, WA | MillingWaterjetBendingWelding | - |
| Techcraft Precision Milling, Finishing · AS9100, ITAR, CMMC | Bellingham, WA | MillingFinishing | AS9100, ITAR, CMMC |
| TNT Machining LLC Milling, Turning, Grinding, Finishing | Sumas, WA | MillingTurningGrindingFinishing | - |
| 3DX Industries Inc Milling, Turning, Swiss, Metal AM, Finishing, Assembly | Ferndale, WA | MillingTurningSwissMetal AMFinishingAssembly | - |
| Abw Technologies, Inc Milling, Welding · ISO 9001, AS9100 | Arlington, WA | MillingWelding | ISO 9001, AS9100 |
| American CNC Fabricating, Inc. Milling, Bending, Laser, Welding, Metal AM | Spokane Valley, WA | MillingBendingLaserWeldingMetal AM | - |
| Argent Fabrication LLC Bending, Welding | Seattle, WA | BendingWelding | - |
| Blackwater Industries Professional Limited Liability Company Welding | Toledo, WA | Welding | - |
| J Newell Corp Milling, Welding | Arlington, WA | MillingWelding | - |
| Lakehouse Industries Milling, Turning, Finishing | Woodland, WA | MillingTurningFinishing | - |
| Larkin Precision, LLC Laser, Grinding | Kent, WA | LaserGrinding | - |
| Mega Machine Shop Inc Milling, Turning, Welding | Tumwater, WA | MillingTurningWelding | - |
| Metals Fabrication Co Milling, Turning, Welding | Airway Heights, WA | MillingTurningWelding | - |
| Modern Machine Milling, Turning, Bending, Welding, Stamping | Seattle, WA | MillingTurningBendingWeldingStamping | - |
| Naimor Inc Milling, Turning, Laser, Punching, Bending, Welding, Finishing, Assembly | Snohomish, WA | MillingTurningLaserPunchingBendingWeldingFinishingAssembly | - |
| Pasco Machine Co Waterjet, Welding | Pasco, WA | WaterjetWelding | - |
| Puget Sound Precision, Inc Turning, Swiss, Waterjet, Assembly | Bremerton, WA | TurningSwissWaterjetAssembly | - |
| Takfab Precision Gunsmithing LLC Milling, Welding | Oak Harbor, WA | MillingWelding | - |
| Three Sigma Manufacturing, Inc Milling, Turning, Welding, EDM, Grinding | Kent, WA | MillingTurningWeldingEDMGrinding | - |
| Argo Blower & Mfg Co Inc Bending, Welding | Seattle, WA | BendingWelding | - |
| Designed With Sparks LLC Welding | Usk, WA | Welding | - |
| Forefront Manufacturing Assembly | Sequim, WA | Assembly | - |
| Gause Tool, Inc Turning, Welding, Grinding | Goldendale, WA | TurningWeldingGrinding | - |
| HK Manufacturing Services LLC Milling | Everett, WA | Milling | - |
| Hobart Machined Products Inc Welding, Assembly | Maple Valley, WA | WeldingAssembly | - |
| Mico Welding & Machining, Inc Milling, Turning, Welding, Finishing | Nine Mile Falls, WA | MillingTurningWeldingFinishing | - |
| Novation, Inc Finishing · ITAR, NADCAP | Spokane Vly, WA | Finishing | ITAR, NADCAP |
| Proto Technologies Inc Milling, Turning, Waterjet, EDM · ISO 9001, AS9100, ITAR | Liberty Lake, WA | MillingTurningWaterjetEDM | ISO 9001, AS9100, ITAR |
| Trufab LLC Milling, Turning, Welding | Shelton, WA | MillingTurningWelding | - |
| GMS Metal Works Inc Milling, Turning · NADCAP | Auburn, WA | MillingTurning | NADCAP |
| Metaltech Inc Laser, Bending, Welding, Assembly · AS9100 | Auburn, WA | LaserBendingWeldingAssembly | AS9100 |
| Multi-Axis Technologies LLC Milling, Turning | Kent, WA | MillingTurning | - |
| Toolcraft Inc Milling, Turning · ISO 9001, ITAR | Monroe, WA | MillingTurning | ISO 9001, ITAR |
| A & G Machine, Inc Milling, Bending, Welding, Assembly · ISO 9001, AS9100 | Auburn, WA | MillingBendingWeldingAssembly | ISO 9001, AS9100 |
| Aether Flow Technologies LLC Milling | Everett, WA | Milling | - |
| Cobalt Enterprises LLC Milling, Finishing · ITAR | Arlington, WA | MillingFinishing | ITAR |
| JJR Engineering & Fabrication Inc Milling, Turning, Bending, Welding, Stamping, Finishing, Assembly · ISO 9001, AS9100, NADCAP | Woodinville, WA | MillingTurningBendingWeldingStampingFinishingAssembly | ISO 9001, AS9100, NADCAP |
| KLW Manufacturing & Design, Inc Milling, Assembly | Arlington, WA | MillingAssembly | - |