| Pro-Tek Manufacturing Inc Bending, Welding | Livermore, CA | BendingWelding | - |
| Production Engineering Corporation Milling, Punching, Bending, Welding · ITAR | Minneapolis, MN | MillingPunchingBendingWelding | ITAR |
| Professional Metal Works Bending, Laser, Welding · ISO 9001 | Lansing, MI | BendingLaserWelding | ISO 9001 |
| Professional Piping Systems Bending, Welding | Phoenix, AZ | BendingWelding | - |
| Prototek Milling, Turning, Bending, Laser, Welding, Waterjet, EDM, Casting, Metal AM · ISO 9001, AS9100, ITAR, CMMC | Rancho Cordova, CA | MillingTurningBendingLaserWeldingWaterjetEDMCastingMetal AM | ISO 9001, AS9100, ITAR, CMMC |
| Prowse Manufacturing Group Inc Milling, Turning, Waterjet, Bending, Assembly · ISO 9001, ITAR, CMMC | Marysville, WA | MillingTurningWaterjetBendingAssembly | ISO 9001, ITAR, CMMC |
| Rainier Metal Works Bending, Welding | Seattle, WA | BendingWelding | - |
| Raleigh Mechanical & Metals Turning, Bending, Welding | Raleigh, NC | TurningBendingWelding | - |
| RBH Aerospace Inc Milling, Turning, Waterjet, Bending | Lakewood, CA | MillingTurningWaterjetBending | - |
| Rig Machine Works LLC Milling, Turning, Bending, Welding, Grinding | Stevensville, MT | MillingTurningBendingWeldingGrinding | - |
| RivCut Milling, Turning, Bending, Metal AM · ISO 9001, AS9100, ITAR | Union City, CA | MillingTurningBendingMetal AM | ISO 9001, AS9100, ITAR |
| Roadrunner Fabrication Bending, Welding | Denver, CO | BendingWelding | - |
| S & R Sheet Metal, Inc Laser, Punching, Bending, Welding, Finishing | Kelso, WA | LaserPunchingBendingWeldingFinishing | - |
| S & S Machine Milling, Turning, Bending, Welding, Waterjet, EDM | Amherst, NH | MillingTurningBendingWeldingWaterjetEDM | - |
| Sanders Metal Products Inc Milling, Turning, Bending, Welding | Fargo, ND | MillingTurningBendingWelding | - |
| Scherer Metals - 1299 E. 58th Avenue, Denver Bending, Welding | Denver, CO | BendingWelding | - |
| Seaberg Industries Turning, Bending, Laser, Welding · ISO 9001 | Davenport, IA | TurningBendingLaserWelding | ISO 9001 |
| Serrmi Products LLC Milling, Turning, Laser, Punching, Bending, Finishing | Pittsburg, KS | MillingTurningLaserPunchingBendingFinishing | - |
| Sharp Dimension Inc Milling, Turning, Bending, Welding, Grinding, Finishing, Assembly · ISO 9001, ITAR | Fremont, CA | MillingTurningBendingWeldingGrindingFinishingAssembly | ISO 9001, ITAR |
| Sharp Tooling Company Milling, Turning, Bending, Welding, Waterjet, EDM, Stamping, Metal AM | Buffalo, NY | MillingTurningBendingWeldingWaterjetEDMStampingMetal AM | - |
| Sheet Metal Specialists (SMS Fabrications, Inc.) Bending, Laser, Welding, Waterjet · ISO 9001 | Riverside, CA | BendingLaserWeldingWaterjet | ISO 9001 |
| Silver Creek Machine Ltd Milling, Turning, Bending, Finishing · ISO 9001 | Fort Worth, TX | MillingTurningBendingFinishing | ISO 9001 |
| Smith Metal, LLC Milling, Turning, Swiss, Laser, Waterjet, Bending, Welding, EDM, Grinding, Finishing · ISO 9001 | Augusta, MI | MillingTurningSwissLaserWaterjetBendingWeldingEDMGrindingFinishing | ISO 9001 |
| South Eastern Machining Inc Milling, Turning, Bending, Welding · ISO 9001 | Pelzer, SC | MillingTurningBendingWelding | ISO 9001 |
| Southwest Waterjet and Laser Milling, Laser, Waterjet, Bending | Phoenix, AZ | MillingLaserWaterjetBending | - |
| Specialty Tool & Die Company Inc Milling, Turning, Bending, Welding, Stamping, Grinding, Assembly | Kokomo, IN | MillingTurningBendingWeldingStampingGrindingAssembly | - |
| Springs Fabrication, LLC Bending, Welding, Waterjet · ISO 9001, ITAR | Colorado Springs, CO | BendingWeldingWaterjet | ISO 9001, ITAR |
| Stampings of Minnesota Inc Laser, Bending, Stamping · ISO 9001, AS9100 | Lakeville, MN | LaserBendingStamping | ISO 9001, AS9100 |
| Stanley Spring and Stamping Corp Laser, Bending, Stamping, Assembly | Chicago, IL | LaserBendingStampingAssembly | - |
| Straitek, LLC Milling, Bending, Finishing · ITAR, ISO 13485 | Danbury, CT | MillingBendingFinishing | ITAR, ISO 13485 |
| Summit Products Inc Milling, Bending, Welding, Finishing | Altoona, IA | MillingBendingWeldingFinishing | - |
| Superior Process Solutions Milling, Turning, Bending, Laser, Welding, Metal AM | Springfield, MO | MillingTurningBendingLaserWeldingMetal AM | - |
| Surfix Inc Milling, Bending, Welding | Palm Bay, FL | MillingBendingWelding | - |
| T & T Metals Milling, Laser, Punching, Bending, Welding, Finishing · ISO 9001 | Covina, CA | MillingLaserPunchingBendingWeldingFinishing | ISO 9001 |
| Technical Concepts LLC Milling, Turning, Laser, Bending, Welding | Hollywood, AL | MillingTurningLaserBendingWelding | - |
| The Cincinnati Ventilating Company Laser, Waterjet, Bending, Welding · ISO 9001 | Florence, KY | LaserWaterjetBendingWelding | ISO 9001 |
| The Part Company, LLC Milling, Laser, Punching, Bending, Stamping, Metal AM, Finishing | Acworth, GA | MillingLaserPunchingBendingStampingMetal AMFinishing | - |
| The Trico Machine Products Corp Milling, Turning, Bending | Cleveland, OH | MillingTurningBending | - |
| Thompson Machine Bending, Stamping · ISO 9001 | Albuquerque, NM | BendingStamping | ISO 9001 |
| TMS Inc Milling, Laser, Punching, Bending, Welding, Grinding, Finishing, Assembly | New Berlin, WI | MillingLaserPunchingBendingWeldingGrindingFinishingAssembly | - |
| Toledo Metal Spinning Company Milling, Bending, Laser, Welding, Stamping · ISO 9001 | Toledo, OH | MillingBendingLaserWeldingStamping | ISO 9001 |
| Toner Machining Technologies Inc Milling, Turning, Waterjet, Punching, Bending, Welding, EDM, Grinding | Morganton, NC | MillingTurningWaterjetPunchingBendingWeldingEDMGrinding | - |
| Topocut, LLC Milling, Laser, Bending, Finishing | Berthoud, CO | MillingLaserBendingFinishing | - |
| Total Machining USA Inc Bending, Welding · ISO 9001, AS9100, ITAR | Oakland Park, FL | BendingWelding | ISO 9001, AS9100, ITAR |
| 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 |
| Trinity Machining, LLC Milling, Turning, Bending, EDM, Grinding, Finishing · ISO 9001 | Grass Valley, CA | MillingTurningBendingEDMGrindingFinishing | ISO 9001 |
| Trust Manufacturing LLC Milling, Turning, Waterjet, Bending, Forging, EDM, Grinding, Finishing | Euclid, OH | MillingTurningWaterjetBendingForgingEDMGrindingFinishing | - |
| United Grinding & Machine Co Milling, Turning, Bending, Laser, Welding, Waterjet, EDM, Casting · ISO 9001 | Canton, OH | MillingTurningBendingLaserWeldingWaterjetEDMCasting | ISO 9001 |
| United Metal Fabricators Inc Bending, Welding · ISO 9001, ITAR | Cleveland, OH | BendingWelding | ISO 9001, ITAR |