| Southwest Waterjet and Laser Milling, Laser, Waterjet, Bending | Phoenix, AZ | MillingLaserWaterjetBending | - |
| Sparton Technology Corp Milling, Turning, Laser, Punching, Bending, Welding, Finishing, Assembly · ISO 9001, AS9100 | Hudson, NH | MillingTurningLaserPunchingBendingWeldingFinishingAssembly | ISO 9001, AS9100 |
| Specialty Machine Milling, Turning, Swiss, Laser, Bending, Welding, EDM, Grinding, Assembly · ISO 9001, AS9100, ITAR | Lago Vista, TX | MillingTurningSwissLaserBendingWeldingEDMGrindingAssembly | ISO 9001, AS9100, ITAR |
| Specialty Precision Machining Milling, Turning, Laser · ISO 9001 | Stockton, CA | MillingTurningLaser | ISO 9001 |
| Spectrum Custom Molds & Manufacturing, Inc Milling, Turning, Laser, Welding, EDM, Grinding, Finishing, Assembly · ISO 9001 | Palmetto, FL | MillingTurningLaserWeldingEDMGrindingFinishingAssembly | ISO 9001 |
| Stanley Spring and Stamping Corp Laser, Bending, Stamping, Assembly | Chicago, IL | LaserBendingStampingAssembly | - |
| State Steel of Omaha Bending, Laser | Omaha, NE | BendingLaser | - |
| Steelhead Metal Corp Milling, Turning, Laser, Waterjet, Bending, EDM, Finishing · ISO 9001 | Nampa, ID | MillingTurningLaserWaterjetBendingEDMFinishing | ISO 9001 |
| Sterling Edge Industrial Cutting, LLC Laser, Waterjet | Denver, CO | LaserWaterjet | - |
| Subtract LLC Milling, Turning, Swiss, Laser, Waterjet, Welding, EDM, Finishing | Muncie, IN | MillingTurningSwissLaserWaterjetWeldingEDMFinishing | - |
| Superior Process Solutions Milling, Turning, Bending, Laser, Welding, Metal AM | Springfield, MO | MillingTurningBendingLaserWeldingMetal AM | - |
| Swan Island Sheet Metal Works Turning, Bending, Laser, Welding | Portland, OR | TurningBendingLaserWelding | - |
| Tabet Manufacturing Co Inc Milling, Turning, Laser, Waterjet, Punching, Bending, Welding, Finishing, Assembly · ISO 9001, ITAR | Norfolk, VA | MillingTurningLaserWaterjetPunchingBendingWeldingFinishingAssembly | ISO 9001, ITAR |
| TDC Manufacturing Inc Milling, Turning, Laser | Redlands, CA | MillingTurningLaser | - |
| Technical Concepts LLC Milling, Turning, Laser, Bending, Welding | Hollywood, AL | MillingTurningLaserBendingWelding | - |
| Technical Products Inc Milling, Turning, Laser, Grinding · ISO 9001 | West Bend, WI | MillingTurningLaserGrinding | ISO 9001 |
| Technimetal Precision Industries Corp Laser, Assembly | Hauppauge, NY | LaserAssembly | - |
| Tel-X Corporation Milling, Turning, Laser, Welding, Stamping, EDM, Finishing · ISO 9001, IATF 16949 | Garden City, MI | MillingTurningLaserWeldingStampingEDMFinishing | ISO 9001, IATF 16949 |
| Teltron Engineering, Inc Laser, Punching, Bending, Welding, Assembly · AS9100, ITAR, CMMC | Taunton, MA | LaserPunchingBendingWeldingAssembly | AS9100, ITAR, CMMC |
| Tennessee Tool Works LLC Milling, Turning, Laser, Waterjet, Bending, Welding, Stamping, EDM, Grinding | Murfreesboro, TN | MillingTurningLaserWaterjetBendingWeldingStampingEDMGrinding | - |
| Texas Metal Specialty Co Laser, Welding, Waterjet | Houston, TX | LaserWeldingWaterjet | - |
| Thorough Built LLC Bending, Laser, Welding | Chattanooga, TN | BendingLaserWelding | - |
| Tiger Industrial Inc Milling, Turning, Laser | Spicewood, TX | MillingTurningLaser | - |
| TMS Inc Milling, Laser, Punching, Bending, Welding, Grinding, Finishing, Assembly | New Berlin, WI | MillingLaserPunchingBendingWeldingGrindingFinishingAssembly | - |
| TR Manufacturing, LLC Milling, Turning, Swiss, Laser, Waterjet, Welding, Finishing · CMMC | Garrett, IN | MillingTurningSwissLaserWaterjetWeldingFinishing | CMMC |
| Tri Angle Metal Fab Milling, Turning, Laser, Punching, Bending, Welding, EDM, Grinding, Assembly · NADCAP | Milton, VT | MillingTurningLaserPunchingBendingWeldingEDMGrindingAssembly | NADCAP |
| Tri Fab Associates, Inc Milling, Turning, Laser, Punching, Welding, Stamping, Grinding, Finishing, Assembly · ISO 9001, AS9100, ITAR, CMMC | Fremont, CA | MillingTurningLaserPunchingWeldingStampingGrindingFinishingAssembly | ISO 9001, AS9100, ITAR, CMMC |
| Trio Metal Stamping, Inc Milling, Turning, Laser, Bending, Welding, Stamping, EDM, Grinding · ISO 9001, NADCAP | City Of Industry, CA | MillingTurningLaserBendingWeldingStampingEDMGrinding | ISO 9001, NADCAP |
| Trocofab Bending, Laser, Welding, Waterjet | St. Louis, MO | BendingLaserWeldingWaterjet | - |
| Troy Innovative Instruments, Inc Milling, Turning, Swiss, Laser, Welding, EDM, Grinding, Finishing, Assembly · ISO 9001, ITAR, ISO 13485 | Middlefield, OH | MillingTurningSwissLaserWeldingEDMGrindingFinishingAssembly | ISO 9001, ITAR, ISO 13485 |
| United Machine & Tool Milling, Turning, Laser, Welding · ISO 9001 | Goodlettsville, TN | MillingTurningLaserWelding | ISO 9001 |
| United Metal Fabricators, Inc Milling, Turning, Laser, Waterjet, Bending, Welding, Finishing, Assembly | Worcester, MA | MillingTurningLaserWaterjetBendingWeldingFinishingAssembly | - |
| USA CNC Machining Milling, Turning, Laser | Medley, FL | MillingTurningLaser | - |
| Valley Precision Inc Milling, Laser, Punching, Bending, Welding, Finishing · ISO 9001 | Waynesboro, VA | MillingLaserPunchingBendingWeldingFinishing | ISO 9001 |
| Vantage Manufacturing & Assembly LLC Milling, Turning, Laser, Welding, Assembly | Poughkeepsie, NY | MillingTurningLaserWeldingAssembly | - |
| Verdugo Tool & Engineering Co Inc Laser, Punching, Bending, Stamping, EDM, Grinding, Finishing · ISO 9001, ITAR | Chatsworth, CA | LaserPunchingBendingStampingEDMGrindingFinishing | ISO 9001, ITAR |
| Vinatech Engineering Inc Milling, Laser, Bending, Welding, Assembly · ITAR | San Diego, CA | MillingLaserBendingWeldingAssembly | ITAR |
| Vptt Armaments Milling, Turning, Laser, Waterjet, Bending, Welding, Stamping, EDM, Grinding, Assembly · ISO 9001, ITAR | Tower City, PA | MillingTurningLaserWaterjetBendingWeldingStampingEDMGrindingAssembly | ISO 9001, ITAR |
| 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 |
| Weistec Engineering, Inc Milling, Turning, Laser, Waterjet, Bending, Welding · ISO 9001, AS9100, ITAR | Anaheim, CA | MillingTurningLaserWaterjetBendingWelding | ISO 9001, AS9100, ITAR |
| Werco Manufacturing Inc Milling, Turning, Laser, Bending, Welding, Finishing, Assembly · ISO 9001 | Broken Arrow, OK | MillingTurningLaserBendingWeldingFinishingAssembly | ISO 9001 |
| Wolf Metals Bending, Laser, Welding, Waterjet, Stamping | Columbus, OH | BendingLaserWeldingWaterjetStamping | - |
| Yarder Manufacturing Bending, Laser, Welding, Metal AM · ISO 9001 | Toledo, OH | BendingLaserWeldingMetal AM | ISO 9001 |