| Port City Metal Services Milling, Welding | Tulsa, OK | MillingWelding | - |
| Precise Tool & Manufacturing Milling, Turning, Welding · ISO 9001, AS9100, ITAR | Rochester, NY | MillingTurningWelding | ISO 9001, AS9100, ITAR |
| Precision Fabrication, Inc. Milling, Bending, Laser, Welding, Waterjet | Fort Wayne, IN | MillingBendingLaserWeldingWaterjet | - |
| Prime Machine Inc work Milling, Turning, Welding · AS9100, ISO 9001 | Salt Lake City, UT | MillingTurningWelding | AS9100, ISO 9001 |
| Production Screw Machine Co Milling, Turning, Bending, Welding · ISO 9001, AS9100, ITAR | Dayton, OH | MillingTurningBendingWelding | ISO 9001, AS9100, ITAR |
| Quality Products, LLC Milling, Turning, Bending, Laser, Welding · ISO 9001, ITAR | Charlotte, NC | MillingTurningBendingLaserWelding | ISO 9001, ITAR |
| Quantum Machining & Design Inc. Bending, Laser, Welding | Fresno, CA | BendingLaserWelding | - |
| R & R Manufacturing Milling, Turning, Welding, Waterjet | Hillsboro, OR | MillingTurningWeldingWaterjet | - |
| R.W. FAB. Jarvis Ent Inc Bending, Welding | Spokane, WA | BendingWelding | - |
| Rand Machine Works Milling, Turning, Bending, Welding | Fresno, CA | MillingTurningBendingWelding | - |
| Redstone Manufacturing USA Milling, Bending, Laser, Welding, Stamping, Casting · ISO 9001, AS9100, IATF 16949 | Seattle, WA | MillingBendingLaserWeldingStampingCasting | ISO 9001, AS9100, IATF 16949 |
| Reinhardt Fabrication Laser, Welding | Dallas, TX | LaserWelding | - |
| Reno Iron Works Co Welding | Reno, NV | Welding | - |
| Rex Industries Inc Bending, Welding | Salt Lake City, UT | BendingWelding | - |
| Richards Sheet Metal Turning, Bending, Laser, Welding, Stamping · ISO 9001 | Ogden, UT | TurningBendingLaserWeldingStamping | ISO 9001 |
| Rivers Metal Products Bending, Laser, Welding | Lincoln, NE | BendingLaserWelding | - |
| RJC Manufacturing Services LLC Milling, Turning, Bending, Welding | Irwin, PA | MillingTurningBendingWelding | - |
| Rose Metal Products Inc. Bending, Laser, Welding, Stamping | Springfield, MO | BendingLaserWeldingStamping | - |
| Ross Metal Works Welding | Houston, TX | Welding | - |
| Seal Tex Welding | Dallas, TX | Welding | - |
| Seattle Makers Laser, Welding, Metal AM | Seattle, WA | LaserWeldingMetal AM | - |
| SendCutSend Milling, Bending, Laser, Welding, Waterjet | Reno, NV | MillingBendingLaserWeldingWaterjet | - |
| Shamrock Machining Inc Milling, Turning, Bending, Laser, Welding · ISO 9001 | Spokane Valley, WA | MillingTurningBendingLaserWelding | ISO 9001 |
| Sick Fab LLC Milling, Bending, Welding | Las Vegas, NV | MillingBendingWelding | - |
| Slim Haney Machining Inc Milling, Turning, Welding | Tulsa, OK | MillingTurningWelding | - |
| SMT Machine & Tool Milling, Turning, Welding, Casting | Green Bay, WI | MillingTurningWeldingCasting | - |
| Solvers Manufacturing Turning, Bending, Welding | Springfield, NE | TurningBendingWelding | - |
| South Austin Metals Bending, Welding | Austin, TX | BendingWelding | - |
| Specialty Metal Fabricators Bending, Welding | Portland, OR | BendingWelding | - |
| Spokane Metals Welding | Spokane Valley, WA | Welding | - |
| Spokane Tin & Sheet Iron Works, Inc. Bending, Welding | Spokane, WA | BendingWelding | - |
| Spring Grove Sheet Metal Bending, Laser, Welding | Cincinnati, OH | BendingLaserWelding | - |
| SRS Fabrication Inc. Milling, Turning, Bending, Welding, Waterjet | North Las Vegas, NV | MillingTurningBendingWeldingWaterjet | - |
| Sterling Machine Technologies Turning, Bending, Welding | Palmyra, PA | TurningBendingWelding | - |
| Still Waters Metal Fab LLC Bending, Welding | Spokane Valley, WA | BendingWelding | - |
| Summit Machine Solutions Milling, Welding | Akron, OH | MillingWelding | - |
| Superior Machine & Tool Milling, Turning, Welding · ISO 9001 | Fort Wayne, IN | MillingTurningWelding | ISO 9001 |
| Superior Pipe Fabricators Welding | Los Angeles, CA | Welding | - |
| Susquehanna Metal Work, LLC Milling, Bending, Welding, Stamping | Columbia, PA | MillingBendingWeldingStamping | - |
| Swan Island Sheet Metal Works Turning, Bending, Laser, Welding | Portland, OR | TurningBendingLaserWelding | - |
| Swiss Technologies Inc. Milling, Turning, Welding, Stamping · ISO 9001 | Knoxville, TN | MillingTurningWeldingStamping | ISO 9001 |
| Sylvester Sheet Metal Bending, Welding | Manchester, NH | BendingWelding | - |
| Tampa Bay Machining Milling, Turning, Welding, EDM · ISO 9001, AS9100, ITAR | Tampa, FL | MillingTurningWeldingEDM | ISO 9001, AS9100, ITAR |
| TBC Metalworks Bending, Laser, Welding | Green Bay, WI | BendingLaserWelding | - |
| TCMS Inc Milling, Turning, Welding | Oklahoma City, OK | MillingTurningWelding | - |
| Texas Metal Specialty Co Laser, Welding, Waterjet | Houston, TX | LaserWeldingWaterjet | - |
| Texas Sheet Metal Bending, Welding | San Antonio, TX | BendingWelding | - |
| Theonics Milling, Turning, Bending, Welding, EDM · AS9100, ITAR, ISO 13485 | Huntsville, AL | MillingTurningBendingWeldingEDM | AS9100, ITAR, ISO 13485 |
| Thompson-Mathis Metal Mfg. Bending, Welding | Dallas, TX | BendingWelding | - |
| Thorough Built LLC Bending, Laser, Welding | Chattanooga, TN | BendingLaserWelding | - |