| Mega Machine Shop Inc Milling, Turning, Welding | Tumwater, WA | MillingTurningWelding | - |
| Minter Industries LLC Milling · ISO 9001 | Lakewood, WA | Milling | ISO 9001 |
| MM Industries Tech LLC Laser, Punching, Bending, Welding, Assembly | Stanwood, WA | LaserPunchingBendingWeldingAssembly | - |
| Onamac Industries, Inc Milling, Turning, Casting, Grinding · ISO 9001, AS9100 | Everett, WA | MillingTurningCastingGrinding | ISO 9001, AS9100 |
| Pasco Machine Co Waterjet, Welding | Pasco, WA | WaterjetWelding | - |
| Puget Sound Precision, Inc Turning, Swiss, Waterjet, Assembly | Bremerton, WA | TurningSwissWaterjetAssembly | - |
| Rainier Metal Works Bending, Welding | Seattle, WA | BendingWelding | - |
| Redstone Manufacturing USA Milling, Bending, Laser, Welding, Stamping, Casting · ISO 9001, AS9100, IATF 16949 | Seattle, WA | MillingBendingLaserWeldingStampingCasting | ISO 9001, AS9100, IATF 16949 |
| Rentiel Precision Laser Cutting L.L.C Milling, Laser, Welding | Tacoma, WA | MillingLaserWelding | - |
| Roberts Precision Machine Inc Milling, Turning, Swiss · ISO 9001, AS9100, ISO 13485 | Monroe, WA | MillingTurningSwiss | ISO 9001, AS9100, ISO 13485 |
| Sarco Precision, Inc Milling, Turning · ISO 9001, AS9100, ITAR | Mount Vernon, WA | MillingTurning | ISO 9001, AS9100, ITAR |
| Shamrock Machining Inc Milling, Turning, Bending, Laser, Welding · ISO 9001 | Spokane Valley, WA | MillingTurningBendingLaserWelding | ISO 9001 |
| Sicom Industries USA LLC Milling, Turning, Waterjet · ISO 9001, AS9100, CMMC | Stanwood, WA | MillingTurningWaterjet | ISO 9001, AS9100, CMMC |
| Spokane Metals Welding | Spokane Valley, WA | Welding | - |
| Spokane Tin & Sheet Iron Works, Inc. Bending, Welding | Spokane, WA | BendingWelding | - |
| Swiss Productions, Inc Milling, Turning, Assembly · ISO 9001 | Liberty Lake, WA | MillingTurningAssembly | ISO 9001 |
| Takfab Precision Gunsmithing LLC Milling, Welding | Oak Harbor, WA | MillingWelding | - |
| Tech Heavy Industries, Inc Milling, Waterjet, Bending, Welding | Riverside, WA | MillingWaterjetBendingWelding | - |
| Three Sigma Manufacturing, Inc Milling, Turning, Welding, EDM, Grinding | Kent, WA | MillingTurningWeldingEDMGrinding | - |
| TNT Machining LLC Milling, Turning, Grinding, Finishing | Sumas, WA | MillingTurningGrindingFinishing | - |
| Toolcraft Inc Milling, Turning · ISO 9001, ITAR | Monroe, WA | MillingTurning | ISO 9001, ITAR |
| Washington Machine Works Milling, Turning, Bending, Welding · ISO 9001 | Seattle, WA | MillingTurningBendingWelding | ISO 9001 |
| Western Fabrication Center LLC Turning, Bending, Welding, Grinding · ISO 9001 | Kelso, WA | TurningBendingWeldingGrinding | ISO 9001 |
| Wheeler Industries Inc Milling, Turning, Bending, Welding | Spokane Valley, WA | MillingTurningBendingWelding | - |
| Xtreme Machining, Inc Milling, Turning · ISO 9001, AS9100 | Auburn, WA | MillingTurning | ISO 9001, AS9100 |
| Yakima Machine Milling, Turning, Finishing | Yakima, WA | MillingTurningFinishing | - |
| Zigler's Welding Shop, Inc Welding | Tumwater, WA | Welding | - |
| Carlson Sheet Metal Works Bending, Welding, Waterjet | Spokane, WA | BendingWeldingWaterjet | - |
| Forefront Manufacturing Assembly | Sequim, WA | Assembly | - |
| Modern Machine Milling, Turning, Bending, Welding, Stamping | Seattle, WA | MillingTurningBendingWeldingStamping | - |
| Pacific Northwest Metal Fabricators Turning, Welding, Waterjet | Seattle, WA | TurningWeldingWaterjet | - |
| A & G Machine, Inc Milling, Bending, Welding, Assembly · ISO 9001, AS9100 | Auburn, WA | MillingBendingWeldingAssembly | ISO 9001, AS9100 |
| Abw Technologies, Inc Milling, Welding · ISO 9001, AS9100 | Arlington, WA | MillingWelding | ISO 9001, AS9100 |
| Aether Flow Technologies LLC Milling | Everett, WA | Milling | - |
| Argo Blower & Mfg Co Inc Bending, Welding | Seattle, WA | BendingWelding | - |
| ASC Machine Tools Inc Bending | Spokane Valley, WA | Bending | - |
| Asko Processing Inc Turning, Grinding, Finishing | Seattle, WA | TurningGrindingFinishing | - |
| Atomic Fabrications LLC. Welding | Seattle, WA | Welding | - |
| Ballard Sheet Metal Works Inc. Bending, Welding | Seattle, WA | BendingWelding | - |
| Cascade Precision, Inc Milling, Turning, Swiss, Finishing, Assembly · ISO 9001, ITAR | Mukilteo, WA | MillingTurningSwissFinishingAssembly | ISO 9001, ITAR |
| Component Products Corp Milling, Turning, Waterjet, Punching, Bending, Stamping, Assembly · AS9100, ITAR, CMMC | Mukilteo, WA | MillingTurningWaterjetPunchingBendingStampingAssembly | AS9100, ITAR, CMMC |
| Edco Inc Welding · ITAR | Mount Vernon, WA | Welding | ITAR |
| Electro Erosion Specialties, Inc Milling, Turning, Laser, Welding, EDM, Grinding | Renton, WA | MillingTurningLaserWeldingEDMGrinding | - |
| Fabtech Precision Sheet Metal LLC Milling, Turning, Laser, Punching, Bending, Welding, Finishing, Assembly | Spokane Valley, WA | MillingTurningLaserPunchingBendingWeldingFinishingAssembly | - |
| Future Present Labs Milling, Turning, Laser, Welding, Waterjet, Metal AM | Seattle, WA | MillingTurningLaserWeldingWaterjetMetal AM | - |
| Gause Tool, Inc Turning, Welding, Grinding | Goldendale, WA | TurningWeldingGrinding | - |
| Hardy Engineering & Manufacturing, Inc Milling, Turning, Welding, EDM · AS9100 | Auburn, WA | MillingTurningWeldingEDM | AS9100 |
| Hill Aerosystems Inc Milling, Turning, Waterjet, Punching, Bending, Welding, Stamping, EDM, Assembly · AS9100 | Enumclaw, WA | MillingTurningWaterjetPunchingBendingWeldingStampingEDMAssembly | AS9100 |
| HK Manufacturing Services LLC Milling | Everett, WA | Milling | - |
| KLW Manufacturing & Design, Inc Milling, Assembly | Arlington, WA | MillingAssembly | - |