| Elemental Design & Machinery, LLC Milling | Chattanooga, TN | Milling | - |
| Chambers Welding & Fabrication Bending, Welding | Chattanooga, TN | BendingWelding | - |
| Maxsteel Fabrication, LLC Milling, Turning, Laser, Welding, Finishing | Paris, TN | MillingTurningLaserWeldingFinishing | - |
| Steel Plate Fabricators Milling, Turning, Bending, Laser, Welding, Waterjet, Metal AM | Knoxville, TN | MillingTurningBendingLaserWeldingWaterjetMetal AM | - |
| Keeler Iron Works Welding | Memphis, TN | Welding | - |
| Loftis Steel & Aluminum, Inc. Milling, Laser, Waterjet | Nashville, TN | MillingLaserWaterjet | - |
| HD Machining Solutions Milling, Turning, Finishing · ISO 9001, ITAR | Elizabethton, TN | MillingTurningFinishing | ISO 9001, ITAR |
| Master Machine LLC Milling, Turning, Welding · ISO 9001 | Chattanooga, TN | MillingTurningWelding | ISO 9001 |
| 22 Metalworks, LLC Milling, Waterjet, Bending, Welding | Caryville, TN | MillingWaterjetBendingWelding | - |
| ACE Machine & Metal Fab Co Milling, Turning, Bending, Welding · ISO 9001 | Nashville, TN | MillingTurningBendingWelding | ISO 9001 |
| Allied Metals Co Laser, Welding | Johnson City, TN | LaserWelding | - |
| American Stainless Fabricators LLC Welding | Dickson, TN | Welding | - |
| Armec Corp Welding · ISO 9001 | Oak Ridge, TN | Welding | ISO 9001 |
| Ben Parker Company Bending, Laser, Welding, Waterjet | Chattanooga, TN | BendingLaserWeldingWaterjet | - |
| Black Pearl Automation LLC Milling, Welding · AS9100, ITAR | Lascassas, TN | MillingWelding | AS9100, ITAR |
| Colbert Manufacturing Co Inc Milling, Turning, Welding, Grinding, Finishing | La Vergne, TN | MillingTurningWeldingGrindingFinishing | - |
| Columbia Machine Works, Inc Milling, Turning, Welding, Stamping, Casting · ISO 9001, ITAR | Columbia, TN | MillingTurningWeldingStampingCasting | ISO 9001, ITAR |
| Engineered Mechanical Systems Inc Milling, Turning, Laser, Bending, Welding | Chattanooga, TN | MillingTurningLaserBendingWelding | - |
| Engineering & Sheetmetal Specialist, LLC Welding, Finishing | La Vergne, TN | WeldingFinishing | - |
| Fab Metal, L.L.C Milling, Turning, Laser, Bending, Welding, Stamping, Finishing, Assembly | Clinton, TN | MillingTurningLaserBendingWeldingStampingFinishingAssembly | - |
| Government & Industrial Supply Inc Milling, Turning, Bending, Welding, Finishing | Pulaski, TN | MillingTurningBendingWeldingFinishing | - |
| Hamilton Machine Co. Milling, Turning, Bending, Welding | Nashville, TN | MillingTurningBendingWelding | - |
| John W. McDougall Co. Bending, Laser, Welding · ISO 9001 | Nashville, TN | BendingLaserWelding | ISO 9001 |
| Leonard Machine Co, LLC Milling, Turning, Welding · ISO 9001 | Cookeville, TN | MillingTurningWelding | ISO 9001 |
| Metco Metal Fab. Bending, Laser, Welding | Chattanooga, TN | BendingLaserWelding | - |
| Morrison Industries LLC Milling, Turning, Laser, Bending, Welding, Finishing, Assembly | Morrison, TN | MillingTurningLaserBendingWeldingFinishingAssembly | - |
| Moultrie Tool & Manufacturing Co Inc Milling, Turning, Bending, Welding, EDM, Stamping · ISO 9001 | Memphis, TN | MillingTurningBendingWeldingEDMStamping | ISO 9001 |
| Music City Sheet Metal Bending, Laser, Welding | Nashville, TN | BendingLaserWelding | - |
| Nashville Sheet Metal Bending, Welding | Nashville, TN | BendingWelding | - |
| Nuclear Lead Co, Inc Welding, Casting | Oak Ridge, TN | WeldingCasting | - |
| Oak Ridge Tool-Engineering Inc Milling, Turning, Welding, EDM, Grinding | Oak Ridge, TN | MillingTurningWeldingEDMGrinding | - |
| Swiss Technologies Inc. Milling, Turning, Welding, Stamping · ISO 9001 | Knoxville, TN | MillingTurningWeldingStamping | ISO 9001 |
| Tennessee Tool & Engineering Inc Welding, Casting, Assembly · ISO 9001 | Oak Ridge, TN | WeldingCastingAssembly | ISO 9001 |
| Tennessee Tool Works LLC Milling, Turning, Laser, Waterjet, Bending, Welding, Stamping, EDM, Grinding | Murfreesboro, TN | MillingTurningLaserWaterjetBendingWeldingStampingEDMGrinding | - |
| The Gage Lab LLC Grinding | Jefferson City, TN | Grinding | - |
| Thorough Built LLC Bending, Laser, Welding | Chattanooga, TN | BendingLaserWelding | - |
| THR Machinery Milling, Turning, Bending, Welding | Allons, TN | MillingTurningBendingWelding | - |
| Universal Machine & Tool, Inc Milling, Turning, Laser, Waterjet, Bending, Welding, EDM, Grinding | Kingsport, TN | MillingTurningLaserWaterjetBendingWeldingEDMGrinding | - |
| Wolfe Industrial, Inc Waterjet, Bending, Welding | La Vergne, TN | WaterjetBendingWelding | - |
| 865fablab Laser, Bending | Powell, TN | LaserBending | - |
| Abston Machine Shop Inc Milling, Turning, Finishing · ISO 9001, ITAR | Taft, TN | MillingTurningFinishing | ISO 9001, ITAR |
| Advanced Machine Inc Milling, Turning, Welding, EDM, Grinding, Finishing, Assembly · ISO 9001, AS9100, ITAR, ISO 13485 | Winchester, TN | MillingTurningWeldingEDMGrindingFinishingAssembly | ISO 9001, AS9100, ITAR, ISO 13485 |
| Alliance Machine and Fabrication, LLC Milling, Turning | Ashland City, TN | MillingTurning | - |
| Axis Fabrication & Machine Co Milling, Turning, Bending, Laser, Welding, EDM · ISO 9001 | Rockford, TN | MillingTurningBendingLaserWeldingEDM | ISO 9001 |
| C2 Machine, LLC Milling, Turning, EDM, Grinding, Assembly | Joelton, TN | MillingTurningEDMGrindingAssembly | - |
| Cumberland Machine Co Milling, Turning, Welding | Nashville, TN | MillingTurningWelding | - |
| Custom Tool Inc Milling, Swiss · ISO 9001 | Cookeville, TN | MillingSwiss | ISO 9001 |
| Fab Worx Milling, Finishing | Mount Juliet, TN | MillingFinishing | - |
| Forma Machine, LLC Milling, Casting · AS9100 | South Pittsburg, TN | MillingCasting | AS9100 |
| Fowler Industrial Plating, LLC Finishing, Assembly · ISO 9001, ITAR, NADCAP | Cleveland, TN | FinishingAssembly | ISO 9001, ITAR, NADCAP |