| Rocky Mountain Waterjet, LLC Laser, Waterjet, Bending, Welding, Finishing | Greeley, CO | LaserWaterjetBendingWeldingFinishing | - |
| Rossetti Galaxy Enterprises, Inc Laser, Waterjet, Welding · ISO 9001 | Rothsay, MN | LaserWaterjetWelding | ISO 9001 |
| Roush & Yates Racing Engines LLC Milling, Turning, Swiss, Waterjet, Finishing · AS9100, ITAR, NADCAP, ISO 13485 | Mooresville, NC | MillingTurningSwissWaterjetFinishing | AS9100, ITAR, NADCAP, ISO 13485 |
| Roysters Machine Shop LLC Milling, Turning, Waterjet, Welding, Stamping, EDM · ISO 9001 | Henderson, KY | MillingTurningWaterjetWeldingStampingEDM | ISO 9001 |
| S & S Machine Inc Milling, Turning, Waterjet, Punching, Bending, Welding, Assembly · ISO 9001, AS9100, ITAR | Irving, TX | MillingTurningWaterjetPunchingBendingWeldingAssembly | ISO 9001, AS9100, ITAR |
| Scotia Engineering, Inc Milling, Waterjet, Bending, Welding, Stamping, EDM, Grinding, Assembly | Santa Fe Springs, CA | MillingWaterjetBendingWeldingStampingEDMGrindingAssembly | - |
| SendCutSend Milling, Bending, Laser, Welding, Waterjet | Reno, NV | MillingBendingLaserWeldingWaterjet | - |
| Seven Star Marine Inc Milling, Turning, Waterjet, Bending, Welding, Finishing · ISO 9001 | Newport, RI | MillingTurningWaterjetBendingWeldingFinishing | ISO 9001 |
| Shape Shifters Inc Milling, Waterjet, Bending, Welding, Stamping, Finishing | Bloomfield, IN | MillingWaterjetBendingWeldingStampingFinishing | - |
| Sinclair and Sons Custom Welding and Machining Service Inc Milling, Turning, Waterjet, Welding, Assembly · ISO 9001, AS9100, NADCAP | Wichita, KS | MillingTurningWaterjetWeldingAssembly | ISO 9001, AS9100, NADCAP |
| Skytop Machine and Tool, Inc Milling, Turning, Waterjet, Welding, Grinding | Port Matilda, PA | MillingTurningWaterjetWeldingGrinding | - |
| Smith Metal, LLC Milling, Turning, Swiss, Laser, Waterjet, Bending, Welding, EDM, Grinding, Finishing · ISO 9001 | Augusta, MI | MillingTurningSwissLaserWaterjetBendingWeldingEDMGrindingFinishing | ISO 9001 |
| SMS Precision Tech, LLC Waterjet, Welding, EDM · ISO 9001 | Tomball, TX | WaterjetWeldingEDM | ISO 9001 |
| Soflo Machining Milling, Turning, Laser, Waterjet, Welding, Grinding, Finishing · ISO 9001, AS9100 | Coral Springs, FL | MillingTurningLaserWaterjetWeldingGrindingFinishing | ISO 9001, AS9100 |
| Southwest Waterjet and Laser Milling, Laser, Waterjet, Bending | Phoenix, AZ | MillingLaserWaterjetBending | - |
| Spring Creek Machining, Inc Milling, Turning, Waterjet, Bending, Welding, EDM, Grinding, Finishing | Lowell, AR | MillingTurningWaterjetBendingWeldingEDMGrindingFinishing | - |
| 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 | - |
| Sterling Edge Industrial Cutting, LLC Laser, Waterjet | Denver, CO | LaserWaterjet | - |
| Streamline Machine Source Inc Milling, Laser, Waterjet, Grinding · ISO 9001 | Greenville, MI | MillingLaserWaterjetGrinding | ISO 9001 |
| Tabet Manufacturing Co Inc Milling, Turning, Laser, Waterjet, Punching, Bending, Welding, Finishing, Assembly · ISO 9001, ITAR | Norfolk, VA | MillingTurningLaserWaterjetPunchingBendingWeldingFinishingAssembly | ISO 9001, ITAR |
| Team Engineering Inc Laser, Waterjet, Finishing · ISO 9001 | Mesa, AZ | LaserWaterjetFinishing | ISO 9001 |
| 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 |
| The Inventors Shop, L.L.C Milling, Turning, Laser, Waterjet, Punching, Bending, Welding, Stamping, Assembly · ISO 9001, ITAR | Cinnaminson, NJ | MillingTurningLaserWaterjetPunchingBendingWeldingStampingAssembly | ISO 9001, ITAR |
| Thermo-Craft Engineering Corp Milling, Turning, Waterjet, Punching, Bending, Welding, Grinding, Assembly | Lynn, MA | MillingTurningWaterjetPunchingBendingWeldingGrindingAssembly | - |
| Tis Aerospace LLC Milling, Turning, Waterjet, Punching, Welding, Stamping, Assembly | Cinnaminson, NJ | MillingTurningWaterjetPunchingWeldingStampingAssembly | - |
| Top Notch Machining, Inc Milling, Waterjet, Stamping, Finishing, Assembly · ISO 9001 | Gresham, OR | MillingWaterjetStampingFinishingAssembly | ISO 9001 |
| TR Manufacturing, LLC Milling, Turning, Swiss, Laser, Waterjet, Welding, Finishing · CMMC | Garrett, IN | MillingTurningSwissLaserWaterjetWeldingFinishing | CMMC |
| Tri-Jet Precision Cutting Services LLC Milling, Turning, Laser, Waterjet, Welding, Finishing · ISO 9001 | Palmer, AK | MillingTurningLaserWaterjetWeldingFinishing | ISO 9001 |
| Trocofab Bending, Laser, Welding, Waterjet | St. Louis, MO | BendingLaserWeldingWaterjet | - |
| Troupe Technologies LLC Milling, Turning, Laser, Waterjet, Punching, Welding, Finishing | Huntsville, AL | MillingTurningLaserWaterjetPunchingWeldingFinishing | - |
| Troy Laser & Fab LLC Milling, Laser, Waterjet, Bending, Welding | Warren, MI | MillingLaserWaterjetBendingWelding | - |
| Udash Corporation Milling, Laser, Waterjet, Welding, Stamping, Assembly · ISO 9001, AS9100 | Simi Valley, CA | MillingLaserWaterjetWeldingStampingAssembly | ISO 9001, AS9100 |
| Udt Inc Milling, Turning, Waterjet, Welding, EDM | Panama City, FL | MillingTurningWaterjetWeldingEDM | - |
| United Metal Fabricators, Inc Milling, Turning, Laser, Waterjet, Bending, Welding, Finishing, Assembly | Worcester, MA | MillingTurningLaserWaterjetBendingWeldingFinishingAssembly | - |
| United Precision Services Milling, Turning, Bending, Welding, Waterjet | Cincinnati, OH | MillingTurningBendingWeldingWaterjet | - |
| United Tool & Machine Corporation Milling, Waterjet, Stamping, EDM, Assembly · ISO 9001, ITAR | Lawrence, MA | MillingWaterjetStampingEDMAssembly | ISO 9001, ITAR |
| Universal Machine & Tool, Inc Milling, Turning, Laser, Waterjet, Bending, Welding, EDM, Grinding | Kingsport, TN | MillingTurningLaserWaterjetBendingWeldingEDMGrinding | - |
| Unlimited Welding & Fabrication, LLC Milling, Laser, Waterjet, Bending, Welding · ISO 9001 | Ham Lake, MN | MillingLaserWaterjetBendingWelding | ISO 9001 |
| Vector Technologies, Inc Milling, Waterjet, Welding, Grinding · ISO 9001, AS9100, ITAR | Winfield, KS | MillingWaterjetWeldingGrinding | ISO 9001, AS9100, ITAR |
| Vptt Armaments Milling, Turning, Laser, Waterjet, Bending, Welding, Stamping, EDM, Grinding, Assembly · ISO 9001, ITAR | Tower City, PA | MillingTurningLaserWaterjetBendingWeldingStampingEDMGrindingAssembly | ISO 9001, ITAR |
| W.C. Machine and Tool, Inc Milling, Waterjet, Punching, Welding, EDM, Grinding, Assembly | Chandler, AZ | MillingWaterjetPunchingWeldingEDMGrindingAssembly | - |
| Weiss Sheet Metal Laser, Waterjet, Punching, Welding | Avon, MA | LaserWaterjetPunchingWelding | - |
| Weistec Engineering, Inc Milling, Turning, Laser, Waterjet, Bending, Welding · ISO 9001, AS9100, ITAR | Anaheim, CA | MillingTurningLaserWaterjetBendingWelding | ISO 9001, AS9100, ITAR |
| Weld Kraft Milling, Bending, Welding, Waterjet · ISO 9001 | St Louis Park, MN | MillingBendingWeldingWaterjet | ISO 9001 |
| Weld Pro Bending, Welding, Waterjet | Boise, ID | BendingWeldingWaterjet | - |
| Wess-Del Inc Milling, Waterjet, EDM, Assembly · ISO 9001, AS9100, ITAR, ISO 13485 | San Jose, CA | MillingWaterjetEDMAssembly | ISO 9001, AS9100, ITAR, ISO 13485 |
| West Palm Machining and Welding Milling, Turning, Waterjet, Welding | Riviera Beach, FL | MillingTurningWaterjetWelding | - |
| Western Metal Works Inc Milling, Waterjet, Welding | Albuquerque, NM | MillingWaterjetWelding | - |