| ASAtec Steel (air) | Baxter Springs | KS | — | ◇ UNVERIFIED |
| ABAvery Barron Industries - Fabrication, LLC | Tulsa | OK | — | ◇ UNVERIFIED |
| BRBaklund R - D LLC | Hutchinson | MN | — | ◇ UNVERIFIED |
| BIBalzer INC | Mountain Lake | MN | — | ◇ UNVERIFIED |
 B & B Manufacturing & Assembly LLC | Faribault | MN | — | ◇ UNVERIFIED |
| BLBeamaco, LLC | Manitowoc | WI | — | ◇ UNVERIFIED |
| BMBecker Machine - Tool INC | Princeton | MN | — | ◇ UNVERIFIED |
| BSBenchmark Steelna INC. | Hollister | CA | — | ◇ UNVERIFIED |
| BOBender Ornamental INC. | Omaha | NE | — | ◇ UNVERIFIED |
| BSBens Structural Fabrication INC | Waite Park | MN | — | ◇ UNVERIFIED |
| BMBf Machining & Manufacturing INC | Anoka | MN | — | ◇ UNVERIFIED |
| BSBig Sky Precision INC. | Manhattan | MT | — | ◇ UNVERIFIED |
| BMBil Manufacturing INC | Argyle | MN | — | ◇ UNVERIFIED |
| BEBison Engineering CO INC | Long Beach | CA | — | ◇ UNVERIFIED |
| BKB - K Swiss INC | Ramsey | MN | — | ◇ UNVERIFIED |
| BWBk Welding | Loveland | CO | — | ◇ UNVERIFIED |
| BSBlading Services Unlimited LLC | Canastota | NY | — | ◇ UNVERIFIED |
| BMBloomer Machine & Fabrication INC. | Bloomer | WI | — | ◇ UNVERIFIED |
| BFBloomsdale Fabrication & Welding | Bloomsdale | MO | — | ◇ UNVERIFIED |
| BCBlue Chip Machine | Waite Park | MN | — | ◇ UNVERIFIED |
| BMBoise Metal Works | Boise | ID | — | ◇ UNVERIFIED |
| BMBoise Metal Works | Boise | ID | — | ◇ UNVERIFIED |
| BTBridge Tool & Die LLC | Buckley | MI | — | ◇ UNVERIFIED |
| BIBriese Iron Works INC | Rochester | MN | — | ◇ UNVERIFIED |
| BPBtd Precision, INC. | Chicopee | MA | — | ◇ UNVERIFIED |
| BMBurn-rite Mold and Machine INC. | Canton | OH | — | ◇ UNVERIFIED |
| BIBy-weld Industries, INC. | Bixby | OK | — | ◇ UNVERIFIED |
| CMCarolina Machining - Fabrication, INC | Youngsville | NC | — | ◇ UNVERIFIED |
| CMCasey Machine Company, INC. | Lancaster | NY | — | ◇ UNVERIFIED |
| CQCb Quality Machining - Engineering INC | Buffalo | MN | — | ◇ UNVERIFIED |
| CPCcz Precision Machining, LLC | Seabrook | NH | — | ◇ UNVERIFIED |
| CMCentral Machine Co., INC. | Quakertown | PA | — | ◇ UNVERIFIED |
| CFC & F Steel CORP. | Elmsford | NY | — | ◇ UNVERIFIED |
| CBChesapeake Bay Steel, INC. | Norfolk | VA | — | ◇ UNVERIFIED |
| CSChip Star Technology LLC | Beaverton | OR | — | ◇ UNVERIFIED |
| COChoi Ornamental Iron Works Corporation Dba Best Iron Works | San Bernardino | CA | — | ◇ UNVERIFIED |
| CACinchseal Associates INC. | Pennsauken | NJ | — | ◇ UNVERIFIED |
| CPCj Precision Industires INC | Signal Hill | CA | — | ◇ UNVERIFIED |
 Cnc Precision Machine INC | Garrettsville | OH | — | ◇ UNVERIFIED |
| CICobb Industrial Fabricators | Acworth | GA | — | ◇ UNVERIFIED |
| CMCommercial Metal Products INC | Springfield | OR | — | ◇ UNVERIFIED |
| CSCommercial Sheet Metal INC Dba Csm Metal | Los Angeles | CA | — | ◇ UNVERIFIED |
| CMConcept Machine - Design INC | Rabbit Hash | KY | — | ◇ UNVERIFIED |
| CMCp Metal Crafters, INC. | Grover | NC | — | ◇ UNVERIFIED |
| CDCreative Design & Machining INC. | South Abington Township | PA | — | ◇ UNVERIFIED |
 Creative Machining Technologies, INC. | East Moline | IL | — | ◇ UNVERIFIED |
| CTCriterion Tool & Die, INC. | Brookpark | OH | — | ◇ UNVERIFIED |
| CPCritical Path Metalworks INC | Silver Cliff | CO | — | ◇ UNVERIFIED |
| CMCr Manufacturing | Grand Island | NE | — | ◇ UNVERIFIED |
| CAC.t. and S. Metalworks, INC. | Irving | TX | — | ◇ UNVERIFIED |
| CBCustom Biogenic Systems INC | Romeo | MI | — | ◇ UNVERIFIED |
| CECustom Expansion Joints | Liberty | MO | — | ◇ UNVERIFIED |
| CMCustom Machine & Tool CO INC | Hanover | MA | — | ◇ UNVERIFIED |
| CMCustom Metal Fab INC | Scappoose | OR | — | ◇ UNVERIFIED |
| CSCustom Stainless Steel INC | Benton | IL | — | ◇ UNVERIFIED |
| CECutting Edge Manufacturing Company, INC. | Phoenix | AZ | — | ◇ UNVERIFIED |
| DIDae Industries | Louisville | KY | — | ◇ UNVERIFIED |
| DTDagry Tooling INC | Owatonna | MN | — | ◇ UNVERIFIED |
| DMDane Mfg CO INC | Dane | WI | — | ◇ UNVERIFIED |
| DTDas Technologies | Paw Paw | MI | — | ◇ UNVERIFIED |
| DADatum a Industries INC | Maple Plain | MN | — | ◇ UNVERIFIED |
| DRDayton Rogers of South Carolina LLC | Columbia | SC | — | ◇ UNVERIFIED |
| DBD & B Precision Products, INC. | Colorado Springs | CO | — | ◇ UNVERIFIED |
| DSDeep South Machinist, LLC | Lafayette | LA | — | ◇ UNVERIFIED |
| DIDelta Iron Works INC | Detroit | MI | — | ◇ UNVERIFIED |
| DMDenver Machine Shop, INC. | Henderson | CO | — | ◇ UNVERIFIED |
| DMDesco Machine CO LLC | Twinsburg | OH | — | ◇ UNVERIFIED |
| DMD&g Metal Works, INC | Waterloo | IA | — | ◇ UNVERIFIED |
| DTDiverse Tooling, INC. | Plymouth | WI | — | ◇ UNVERIFIED |
| DWDiversified Welding, INC. | West Fargo | ND | — | ◇ UNVERIFIED |
| DMD.n. Machining, INC. | Bradenton | FL | — | ◇ UNVERIFIED |
| DRDock Rite INC | Hutchinson | MN | — | ◇ UNVERIFIED |
| DIDrasgow INC | Gainesville | NY | — | ◇ UNVERIFIED |
| DIDrp Industries | Granbury | TX | — | ◇ UNVERIFIED |
| DRD & R Steel Construction, INC. | Towanda | PA | — | ◇ UNVERIFIED |
| DPDuralum Products, INC | Sacramento | CA | — | ◇ UNVERIFIED |
| DMDutchman Manufacturing Company LLC | Traverse City | MI | — | ◇ UNVERIFIED |
 Earnest Products, INC. | Longwood | FL | — | ◇ UNVERIFIED |
| EAEdge Automation INC | Saint Michael | MN | — | ◇ UNVERIFIED |
| ETEdm Tech Center INC | Minneapolis | MN | — | ◇ UNVERIFIED |
| EJEdwin J. Mckenica & Sons, INC. | Buffalo | NY | — | ◇ UNVERIFIED |
| EPE&h Premier Machine, INC. | Luxemburg | WI | — | ◇ UNVERIFIED |
| EPEidemiller Precision Machining | Milford | MI | — | ◇ UNVERIFIED |
| EAEl Arca Iron Works Mfg INC | Bellflower | CA | — | ◇ UNVERIFIED |
| EAElc American, Corporation | Bayville | NJ | — | ◇ UNVERIFIED |
| ETElite Tool LLC | Moscow Mills | MO | — | ◇ UNVERIFIED |
| EHEmil Hans Tool LLC Dba B - E Tool | Minneapolis | MN | — | ◇ UNVERIFIED |
| ELEmw LLC | Middleton | MA | — | ◇ UNVERIFIED |
| EIEpcor Industrial, INC. | Elk Grove Village | IL | — | ◇ UNVERIFIED |
| EMExeter Machine CO INC | Lomira | WI | — | ◇ UNVERIFIED |
 Experimental Machine, INC. | Hunt Valley | MD | — | ◇ UNVERIFIED |
| FIFabex INC | Saint Paul | MN | — | ◇ UNVERIFIED |
| FTFab Tech Manufacturing INC | Prineville | OR | — | ◇ UNVERIFIED |
| FFFalls Fabricating LLC | Little Falls | MN | — | ◇ UNVERIFIED |
| FSFalmer Screw Products & Mfg. | Youngstown | OH | — | ◇ UNVERIFIED |
| FPFederal Prison Industries, INC | Bruceton Mills | WV | — | ◇ UNVERIFIED |
| FIFerreus Industries INC | Bluffdale | UT | — | ◇ UNVERIFIED |
| FIFikeco INC | Cynthiana | KY | — | ◇ UNVERIFIED |
| FLFine Line Fabricating INC | Phoenix | AZ | — | ◇ UNVERIFIED |
| FGFireblast Global INC | Corona | CA | — | ◇ UNVERIFIED |
