| TDC Manufacturing Inc Milling, Turning, Laser | Redlands, CA | MillingTurningLaser | - |
| ThermoAir Grinding | Burbank, CA | Grinding | - |
| TL Machine, LLC Milling, Turning · ISO 9001, AS9100 | Garden Grove, CA | MillingTurning | ISO 9001, AS9100 |
| Top Machining, Inc Milling, Turning, Welding, Finishing, Assembly · ISO 9001, AS9100, ITAR | Santa Clara, CA | MillingTurningWeldingFinishingAssembly | ISO 9001, AS9100, ITAR |
| Top Precision Milling, Turning, Assembly · ISO 9001, ITAR | San Luis Obispo, CA | MillingTurningAssembly | ISO 9001, ITAR |
| Total Concept Enterprises, Inc. Milling, Turning, Bending, Welding | Fresno, CA | MillingTurningBendingWelding | - |
| Trio Metal Stamping, Inc Milling, Turning, Laser, Bending, Welding, Stamping, EDM, Grinding · ISO 9001, NADCAP | City Of Industry, CA | MillingTurningLaserBendingWeldingStampingEDMGrinding | ISO 9001, NADCAP |
| True Precision Machining, Inc Milling, Turning, Swiss, Welding, Stamping, EDM, Grinding, Finishing · ISO 9001, AS9100, ITAR, CMMC | Buellton, CA | MillingTurningSwissWeldingStampingEDMGrindingFinishing | ISO 9001, AS9100, ITAR, CMMC |
| V&S Engineering Milling, Turning, EDM, Grinding · ISO 9001, AS9100, ITAR | Huntington Beach, CA | MillingTurningEDMGrinding | ISO 9001, AS9100, ITAR |
| Van's Manufacturing, Inc Milling, Turning | Simi Valley, CA | MillingTurning | - |
| Vinatech Engineering Inc Milling, Laser, Bending, Welding, Assembly · ITAR | San Diego, CA | MillingLaserBendingWeldingAssembly | ITAR |
| Vision Aerospace LLC Milling, Turning, EDM · AS9100 | Northridge, CA | MillingTurningEDM | AS9100 |
| Yuhas Tooling & Machining Inc Milling, Turning, Grinding, Finishing | Milpitas, CA | MillingTurningGrindingFinishing | - |