| Ruhl Inc Milling, Turning, Waterjet, Welding, Grinding | Spring Lake, NC | MillingTurningWaterjetWeldingGrinding | - |
| S & S Machine Milling, Turning, Bending, Welding, Waterjet, EDM | Amherst, NH | MillingTurningBendingWeldingWaterjetEDM | - |
| S & S Machine Inc Milling, Turning, Waterjet, Punching, Bending, Welding, Assembly · ISO 9001, AS9100, ITAR | Irving, TX | MillingTurningWaterjetPunchingBendingWeldingAssembly | ISO 9001, AS9100, ITAR |
| Sa Aerospace Inc Milling, Turning, Waterjet, EDM · ISO 9001, AS9100 | Sun Valley, CA | MillingTurningWaterjetEDM | ISO 9001, AS9100 |
| Sharp Tooling Company Milling, Turning, Bending, Welding, Waterjet, EDM, Stamping, Metal AM | Buffalo, NY | MillingTurningBendingWeldingWaterjetEDMStampingMetal AM | - |
| Sheet Metal Specialists (SMS Fabrications, Inc.) Bending, Laser, Welding, Waterjet · ISO 9001 | Riverside, CA | BendingLaserWeldingWaterjet | ISO 9001 |
| Skytop Machine and Tool, Inc Milling, Turning, Waterjet, Welding, Grinding | Port Matilda, PA | MillingTurningWaterjetWeldingGrinding | - |
| Snowline Engineering Laser, Waterjet, Welding, Finishing · ISO 9001, AS9100, NADCAP | Cameron Park, CA | LaserWaterjetWeldingFinishing | ISO 9001, AS9100, NADCAP |
| SRS Fabrication Inc. Milling, Turning, Bending, Welding, Waterjet | North Las Vegas, NV | MillingTurningBendingWeldingWaterjet | - |
| Stampede Die Corp Milling, Turning, Waterjet, Welding, Casting, EDM | Wayland, MI | MillingTurningWaterjetWeldingCastingEDM | - |
| Tecma Milling, Turning, Welding, Waterjet, EDM, Stamping, Casting · ISO 9001, AS9100, ITAR, NADCAP | Sacramento, CA | MillingTurningWeldingWaterjetEDMStampingCasting | ISO 9001, AS9100, ITAR, NADCAP |
| Texas Metal Specialty Co Laser, Welding, Waterjet | Houston, TX | LaserWeldingWaterjet | - |
| The Bennu Group Inc Milling, Turning, Waterjet, Welding, Finishing · ISO 9001 | South Holland, IL | MillingTurningWaterjetWeldingFinishing | ISO 9001 |
| Tis Aerospace LLC Milling, Turning, Waterjet, Punching, Welding, Stamping, Assembly | Cinnaminson, NJ | MillingTurningWaterjetPunchingWeldingStampingAssembly | - |
| Toner Machining Technologies Inc Milling, Turning, Waterjet, Punching, Bending, Welding, EDM, Grinding | Morganton, NC | MillingTurningWaterjetPunchingBendingWeldingEDMGrinding | - |
| Total Manufacturing Milling, Turning, Waterjet, Welding, EDM, Grinding | Mentor, OH | MillingTurningWaterjetWeldingEDMGrinding | - |
| Triad Tool & Die Co Milling, Turning, Waterjet, Welding, EDM, Grinding, Finishing, Assembly · ISO 9001, AS9100, NADCAP | Somerville, NJ | MillingTurningWaterjetWeldingEDMGrindingFinishingAssembly | ISO 9001, AS9100, NADCAP |
| Triangle Precision Industries Inc Milling, Swiss, Laser, Waterjet, Bending, EDM · ISO 9001, ITAR | Dayton, OH | MillingSwissLaserWaterjetBendingEDM | ISO 9001, ITAR |
| Trinity Design Group LLC Waterjet, Welding | Pell City, AL | WaterjetWelding | - |
| Triple E Machine Inc Turning, Laser, Welding, Waterjet, EDM | Appleton, WI | TurningLaserWeldingWaterjetEDM | - |
| TRK Fabrication Milling, Turning, Bending, Welding, Waterjet | Akron, OH | MillingTurningBendingWeldingWaterjet | - |
| Udt Inc Milling, Turning, Waterjet, Welding, EDM | Panama City, FL | MillingTurningWaterjetWeldingEDM | - |
| United CNC Machining Milling, Turning, Laser, Waterjet, Welding, EDM, Grinding, Finishing · ISO 9001, AS9100, ITAR, NADCAP, CMMC | Auburn Hills, MI | MillingTurningLaserWaterjetWeldingEDMGrindingFinishing | ISO 9001, AS9100, ITAR, NADCAP, CMMC |
| United Grinding & Machine Co Milling, Turning, Bending, Laser, Welding, Waterjet, EDM, Casting · ISO 9001 | Canton, OH | MillingTurningBendingLaserWeldingWaterjetEDMCasting | ISO 9001 |
| United Precision Services Milling, Turning, Bending, Welding, Waterjet | Cincinnati, OH | MillingTurningBendingWeldingWaterjet | - |
| Vector Technologies, Inc Milling, Waterjet, Welding, Grinding · ISO 9001, AS9100, ITAR | Winfield, KS | MillingWaterjetWeldingGrinding | ISO 9001, AS9100, ITAR |
| Vorteque LLC Milling, Turning, Waterjet, Bending, Welding | Missoula, MT | MillingTurningWaterjetBendingWelding | - |
| W.C. Machine and Tool, Inc Milling, Waterjet, Punching, Welding, EDM, Grinding, Assembly | Chandler, AZ | MillingWaterjetPunchingWeldingEDMGrindingAssembly | - |
| Wagner Machine Company Milling, Turning, Swiss, Waterjet, Metal AM, EDM | Champaign, IL | MillingTurningSwissWaterjetMetal AMEDM | - |
| Waterjet Cutting Inc Turning, Waterjet, Bending, Welding · ITAR | Albuquerque, NM | TurningWaterjetBendingWelding | ITAR |
| Weiss Sheet Metal Laser, Waterjet, Punching, Welding | Avon, MA | LaserWaterjetPunchingWelding | - |
| West Palm Machining and Welding Milling, Turning, Waterjet, Welding | Riviera Beach, FL | MillingTurningWaterjetWelding | - |
| Wildfactory Milling, Turning, Waterjet | Camarillo, CA | MillingTurningWaterjet | - |
| Wilson Works Inc Waterjet, Bending, Welding | Morgantown, WV | WaterjetBendingWelding | - |
| Windmill Hill Manufacturing, LLC Milling, Turning, Waterjet, Welding, Grinding | Tully, NY | MillingTurningWaterjetWeldingGrinding | - |
| Wolf Metals Bending, Laser, Welding, Waterjet, Stamping | Columbus, OH | BendingLaserWeldingWaterjetStamping | - |
| X-Mil, Inc Milling, Turning, Waterjet, Bending, Welding, EDM, Grinding, Finishing · ISO 9001 | Mount Orab, OH | MillingTurningWaterjetBendingWeldingEDMGrindingFinishing | ISO 9001 |