| Thomason Machine Works Inc Milling, Turning, EDM · ISO 9001 | Rockford, IL | MillingTurningEDM | ISO 9001 |
| Tobar Industries Milling, Turning, Bending, Welding | San Jose, CA | MillingTurningBendingWelding | - |
| Tolerance Tool & Engineering Milling, Turning, Welding · ISO 9001, ITAR | Detroit, MI | MillingTurningWelding | ISO 9001, ITAR |
| Total Concept Enterprises, Inc. Milling, Turning, Bending, Welding | Fresno, CA | MillingTurningBendingWelding | - |
| Toth Industries Inc Milling, Turning, Bending, Casting · ISO 9001 | Toledo, OH | MillingTurningBendingCasting | ISO 9001 |
| Trans Machine Technologies SC Milling, Turning, Bending, Laser, Welding, EDM, Casting · ISO 9001 | Greenville, SC | MillingTurningBendingLaserWeldingEDMCasting | ISO 9001 |
| Tri-Gon Precision, Inc. Milling, Turning, Welding, EDM | Colorado Springs, CO | MillingTurningWeldingEDM | - |
| Tri-Tec Industries Milling, Turning, Welding | Charlotte, NC | MillingTurningWelding | - |
| Tri-V Tool & Manufacturing Co Milling, Turning, Bending, Welding, Waterjet, EDM · ISO 9001 | Omaha, NE | MillingTurningBendingWeldingWaterjetEDM | ISO 9001 |
| Triple E Machine Inc Turning, Laser, Welding, Waterjet, EDM | Appleton, WI | TurningLaserWeldingWaterjetEDM | - |
| TRK Fabrication Milling, Turning, Bending, Welding, Waterjet | Akron, OH | MillingTurningBendingWeldingWaterjet | - |
| True FAB and Powder Turning, Bending, Laser, Welding | Reno, NV | TurningBendingLaserWelding | - |
| Tucson CNC Machining, Inc. Milling, Turning, Bending, Casting | Tucson, AZ | MillingTurningBendingCasting | - |
| Turner Machine Co Inc Milling, Turning, Welding | Tulsa, OK | MillingTurningWelding | - |
| Ultimate Precision Tech Milling, Turning, EDM | Houston, TX | MillingTurningEDM | - |
| United Grinding & Machine Co Milling, Turning, Bending, Laser, Welding, Waterjet, EDM, Casting · ISO 9001 | Canton, OH | MillingTurningBendingLaserWeldingWaterjetEDMCasting | ISO 9001 |
| United Machine & Tool Milling, Turning, Laser, Welding · ISO 9001 | Goodlettsville, TN | MillingTurningLaserWelding | ISO 9001 |
| United Precision Machining Milling, Turning | Minneapolis, MN | MillingTurning | - |
| United Precision Services Milling, Turning, Bending, Welding, Waterjet | Cincinnati, OH | MillingTurningBendingWeldingWaterjet | - |
| USA Precision Machining Milling, Turning · ISO 9001 | Houston, TX | MillingTurning | ISO 9001 |
| V-Lake Industries Milling, Turning · ISO 9001 | Buffalo, NY | MillingTurning | ISO 9001 |
| Veco Technologies, Inc. Milling, Turning, Welding, EDM | Fresno, CA | MillingTurningWeldingEDM | - |
| Vista Manufacturing Company Milling, Turning, Bending, Laser, Welding | Kansas City, KS | MillingTurningBendingLaserWelding | - |
| Vulcan Machine Milling, Turning, Bending, Laser, Welding, EDM · ISO 9001, AS9100, ITAR, ISO 13485, CMMC | Tampa, FL | MillingTurningBendingLaserWeldingEDM | ISO 9001, AS9100, ITAR, ISO 13485, CMMC |
| Walerko Tool & Engineering Milling, Turning, Casting · ISO 9001, AS9100 | Elkhart, IN | MillingTurningCasting | ISO 9001, AS9100 |
| Washington Machine Works Milling, Turning, Bending, Welding · ISO 9001 | Seattle, WA | MillingTurningBendingWelding | ISO 9001 |
| West Michigan Precision Machining Milling, Turning, Bending · ISO 9001, AS9100, ITAR | Walker, MI | MillingTurningBending | ISO 9001, AS9100, ITAR |
| Wheeler Industries Inc Milling, Turning, Bending, Welding | Spokane Valley, WA | MillingTurningBendingWelding | - |
| Wildman Manufacturing, Inc. Milling, Turning, Bending, Welding | Oklahoma City, OK | MillingTurningBendingWelding | - |
| Wolfe & Swickard Machine Co Milling, Turning · AS9100 | Indianapolis, IN | MillingTurning | AS9100 |
| Wrightwood Precision Products Company Milling, Turning | Chicago, IL | MillingTurning | - |
| Xymat Milling, Turning, Bending, Laser, Welding, Waterjet, EDM, Metal AM · ISO 9001, AS9100 | Colorado Springs, CO | MillingTurningBendingLaserWeldingWaterjetEDMMetal AM | ISO 9001, AS9100 |
| Yardarm Fabrication Milling, Turning, Bending, Laser, Welding, Stamping | Indianapolis, IN | MillingTurningBendingLaserWeldingStamping | - |
| ZYCI CNC Machining Milling, Turning, EDM, Metal AM · ISO 9001, AS9100, ITAR, CMMC | Chamblee, GA | MillingTurningEDMMetal AM | ISO 9001, AS9100, ITAR, CMMC |