| Atomic Fabrications LLC. Welding | Seattle, WA | Welding | - |
| Automated Machine & Technology Inc Milling, Turning, Waterjet, Bending, Welding, EDM, Grinding, Assembly · ISO 9001, ITAR | Yorktown, VA | MillingTurningWaterjetBendingWeldingEDMGrindingAssembly | ISO 9001, ITAR |
| Automated Production Machining, Inc Milling, Turning, Welding, Grinding | Gordonsville, VA | MillingTurningWeldingGrinding | - |
| Awerkamp Machine Co Welding | Quincy, IL | Welding | - |
| Axis Fabrication & Machine Co Milling, Turning, Bending, Laser, Welding, EDM · ISO 9001 | Rockford, TN | MillingTurningBendingLaserWeldingEDM | ISO 9001 |
| Azure Microdynamics, Inc Milling, Turning, Swiss, Welding, EDM · ISO 9001, ISO 13485 | Foothill Ranch, CA | MillingTurningSwissWeldingEDM | ISO 9001, ISO 13485 |
| B & C Machine Welding, Waterjet | Oklahoma City, OK | WeldingWaterjet | - |
| B & D Precision Welding Milling, Turning, Welding, Grinding | Pomona, CA | MillingTurningWeldingGrinding | - |
| B & G Tool Co Waterjet, Welding, Stamping, EDM · ISO 9001 | Columbus, OH | WaterjetWeldingStampingEDM | ISO 9001 |
| B & K Solutions, Inc Laser, Welding, Grinding | Clinton Township, MI | LaserWeldingGrinding | - |
| B Machine Milling, Turning, Welding, Stamping, Grinding | Parkersburg, WV | MillingTurningWeldingStampingGrinding | - |
| Baiar Industries Milling, Turning, Welding, EDM | Columbia Falls, MT | MillingTurningWeldingEDM | - |
| Banks Engineering & Machine LLC Milling, Turning, Welding, Casting, Grinding · ISO 9001 | Webb City, MO | MillingTurningWeldingCastingGrinding | ISO 9001 |
| Baum Machine Inc Milling, Turning, Welding | Appleton, WI | MillingTurningWelding | - |
| Beatrice Machine, LLC Milling, Turning, Welding | Beatrice, NE | MillingTurningWelding | - |
| Bedford Machine & Tool Inc Milling, Turning, Welding, Casting, Finishing | Bedford, IN | MillingTurningWeldingCastingFinishing | - |
| Behr Enterprises LLC Laser, Waterjet, Welding | Sussex, WI | LaserWaterjetWelding | - |
| Belding Tool and Machine Milling, Turning, Welding, EDM, Grinding | Belding, MI | MillingTurningWeldingEDMGrinding | - |
| Belfanti Machine Works LLC Milling, Turning, Waterjet, Welding, Stamping | Beaverton, OR | MillingTurningWaterjetWeldingStamping | - |
| Ben Parker Company Bending, Laser, Welding, Waterjet | Chattanooga, TN | BendingLaserWeldingWaterjet | - |
| Bennett Manufacturing Company, Inc Laser, Welding, Finishing | Alden, NY | LaserWeldingFinishing | - |
| Bermont Gage & Automation Inc Milling, Waterjet, Welding, Grinding · ISO 9001 | Fraser, MI | MillingWaterjetWeldingGrinding | ISO 9001 |
| Best Machine Inc Milling, Turning, Swiss, Bending, Welding, EDM, Grinding · ISO 9001, ITAR | Fremont, NH | MillingTurningSwissBendingWeldingEDMGrinding | ISO 9001, ITAR |
| Bison Profab Inc Laser, Punching, Bending, Welding, Finishing · ISO 9001 | Magnolia, TX | LaserPunchingBendingWeldingFinishing | ISO 9001 |
| Blue Ridge Machine Works Inc Milling, Turning, Waterjet, Welding, Grinding, Finishing | Verona, VA | MillingTurningWaterjetWeldingGrindingFinishing | - |
| Bmi Cad Services, Inc Milling, Turning, Welding, EDM, Grinding | Simsbury, CT | MillingTurningWeldingEDMGrinding | - |
| bo-mar Industries Bending, Welding, Waterjet | Indianapolis, IN | BendingWeldingWaterjet | - |
| Bob’s Welding, Machining & Fabrication, Inc. Bending, Welding | Anaheim, CA | BendingWelding | - |
| Bonneville Machine Milling, Turning, Welding · ISO 9001 | Salt Lake City, UT | MillingTurningWelding | ISO 9001 |
| Boss Metal Fabricators, Inc. Milling, Bending, Welding, Stamping | St. Louis, MO | MillingBendingWeldingStamping | - |
| Boyce Machine Milling, Turning, Welding | Kent, OH | MillingTurningWelding | - |
| Britech Electropolishing Inc Welding, Finishing | Newark, CA | WeldingFinishing | - |
| Bront Machining Inc. Milling, Turning, Welding · ISO 9001, AS9100 | Dayton, OH | MillingTurningWelding | ISO 9001, AS9100 |
| Brown Industries Inc Milling, Turning, Bending, Welding | Kansas City, MO | MillingTurningBendingWelding | - |
| Brown Precision Inc Milling, Turning, Bending, Welding, Waterjet, EDM · ISO 9001, AS9100 | Huntsville, AL | MillingTurningBendingWeldingWaterjetEDM | ISO 9001, AS9100 |
| BS Designs Inc Milling, Turning, Welding | Santee, CA | MillingTurningWelding | - |
| BTX Fabrication LLC Waterjet, Welding | Alvarado, TX | WaterjetWelding | - |
| Buckeye Metal Works, Inc Laser, Welding, Waterjet | Columbus, OH | LaserWeldingWaterjet | - |
| Budde Enterprises Inc Bending, Welding, Casting | Newton, KS | BendingWeldingCasting | - |
| Budde Precision Machining Corp Milling, Turning, Welding, EDM, Grinding, Finishing, Assembly · ISO 9001, AS9100, ITAR, NADCAP, ISO 13485 | Dayton, OH | MillingTurningWeldingEDMGrindingFinishingAssembly | ISO 9001, AS9100, ITAR, NADCAP, ISO 13485 |
| Budde Sheet Metal Works, Inc. Bending, Laser, Welding | Dayton, OH | BendingLaserWelding | - |
| Bullet Fabrication LLC Milling, Bending, Welding | Gardena, CA | MillingBendingWelding | - |
| Burns Machine Co Milling, Turning, Bending, Welding, Grinding, Assembly · ISO 9001 | Ottawa, IL | MillingTurningBendingWeldingGrindingAssembly | ISO 9001 |
| Butler Precision Technologies LLC Milling, Turning, Welding, Finishing · AS9100, ITAR | Bristol, PA | MillingTurningWeldingFinishing | AS9100, ITAR |
| Byers Precision Fabricators, Inc Milling, Laser, Bending, Welding · ISO 9001 | Hendersonville, NC | MillingLaserBendingWelding | ISO 9001 |
| C & F Tool & Die Milling, Turning, Welding · ISO 9001, AS9100, ITAR | San Antonio, TX | MillingTurningWelding | ISO 9001, AS9100, ITAR |
| C + C Mfg Milling, Bending, Welding, Grinding, Finishing | Garden City, ID | MillingBendingWeldingGrindingFinishing | - |
| C M Engineering Inc Milling, Laser, Bending, Welding, Finishing, Assembly · ISO 9001 | Dugger, IN | MillingLaserBendingWeldingFinishingAssembly | ISO 9001 |
| C. R. Metal Products Inc Bending, Laser, Welding · ISO 9001 | St. Louis, MO | BendingLaserWelding | ISO 9001 |
| Cal Machine & Manufacturing LLC Milling, Turning, Welding, Assembly · ISO 9001, AS9100 | Chino, CA | MillingTurningWeldingAssembly | ISO 9001, AS9100 |