| ANAmerican Nameplate CO | Chicago | IL | — | ◇ UNVERIFIED |
| APAmerican Pressed Aluminum CO | Worcester | MA | — | ◇ UNVERIFIED |
| ARAmerican Rack CO | Chicago | IL | — | ◇ UNVERIFIED |
| ASAmerican Steel Processing and Systems CO | Pittsburgh | PA | — | ◇ UNVERIFIED |
| ATAmerican Tool Center Lansing | Lansing | MI | — | ◇ UNVERIFIED |
| ATAmerican Tubing Arkansas LLC | Springdale | AR | — | ◇ UNVERIFIED |
| ADAmi Doduco | Reidsville | NC | — | ◇ UNVERIFIED |
| ARAmsted Rail Company INC | Homer | MI | — | ◇ UNVERIFIED |
| AAnaco | Corona | CA | — | ◇ UNVERIFIED |
| AMAnderson Machine and Metal Works LTD | Blue Creek | OH | — | ◇ UNVERIFIED |
| AWAnderson Woodwaste & Recycling INC | Anderson | SC | — | ◇ UNVERIFIED |
| AAndritz | Tualatin | OR | — | ◇ UNVERIFIED |
| AIAndritz, INC. | Pell City | AL | — | ◇ UNVERIFIED |
| ACAnglers Choice Rigs INC | Port Saint Lucie | FL | — | ◇ UNVERIFIED |
| AGAnodizing Graphics of Texas | Stafford | TX | — | ◇ UNVERIFIED |
| AIAnson Industries LLC | Louisville | KY | — | ◇ UNVERIFIED |
| AIAnvil International LP | North Kingstown | RI | — | ◇ UNVERIFIED |
| ALAozi-brookville, LLC | Indianapolis | IN | — | ◇ UNVERIFIED |
| AIApcom INC | Franklin | TN | — | ◇ UNVERIFIED |
| AWApeengineering - Wichita (wellington Pl) | Wichita | KS | — | ◇ UNVERIFIED |
| ALApek Lead CO | Port Saint Lucie | FL | — | ◇ UNVERIFIED |
| AMApollo Machine & Mfg INC | Micco | WV | — | ◇ UNVERIFIED |
| AIApple INC. (ur01) | Sunnyvale | CA | — | ◇ UNVERIFIED |
| AEAptim Environmental & Infrastructure, INC. | Findlay | OH | — | ◇ UNVERIFIED |
| AMApx Mitchell Machine Shop | Greencastle | PA | — | ◇ UNVERIFIED |
| ATAranda Tooling INC | Chino | CA | — | ◇ UNVERIFIED |
| AMArko Machine Products INC | Arkadelphia | AR | — | ◇ UNVERIFIED |
| ARArmey Rutter INC | Fresno | CA | — | ◇ UNVERIFIED |
| ATArnold Tool INC | Council Bluffs | IA | — | ◇ UNVERIFIED |
| ALArup Laboratories | Salt Lake City | UT | — | ◇ UNVERIFIED |
| AEAsrc Energy Services Alaska INC - Anchorage Fabrication Facility | Anchorage | AK | — | ◇ UNVERIFIED |
| APAssembled Products | Buffalo Grove | IL | — | ◇ UNVERIFIED |
| AA-tek | Brainerd | MN | — | ◇ UNVERIFIED |
| AAti | East Hartford | CT | — | ◇ UNVERIFIED |
| ACAti Casting Service | Alpena | MI | — | ◇ UNVERIFIED |
| ALAti Ladish LLC | Coon Valley, Village of | WI | — | ◇ UNVERIFIED |
| ASAtlantic States Cast Iron Pipe | Phillipsburg | NJ | — | ◇ UNVERIFIED |
| ASAtlas Screw and Specialty | New Bedford | MA | — | ◇ UNVERIFIED |
| AMAtomic Machine & Edm INC | Naples | FL | — | ◇ UNVERIFIED |
| ATA+ Trailer and Fabrication INC | Mayo | FL | — | ◇ UNVERIFIED |
| AFAuburn Foundry INC | Auburn | NY | — | ◇ UNVERIFIED |
| AFAuburn Foundry, INC Plant 1 | Auburn | IN | — | ◇ UNVERIFIED |
| ACAurora Cad Cam INC | Metamora | MI | — | ◇ UNVERIFIED |
| ACAwh Corporation - Lofton Plant | Raphine | VA | — | ◇ UNVERIFIED |
| AWAxis Welding & Machine Works INC | Creola | AL | — | ◇ UNVERIFIED |
| AIAxletech International - US Gear Division | Chicago | IL | — | ◇ UNVERIFIED |
| BSBabbitting Svc | South Elgin | IL | — | ◇ UNVERIFIED |
| BMBaker Machine Co, INC | Shreveport | LA | — | ◇ UNVERIFIED |
| BSBarber Steel Foundry Corporation | Rothbury | MI | — | ◇ UNVERIFIED |
| BPBarry Pattern and Foundry Company, INC. | Birmingham | AL | — | ◇ UNVERIFIED |
| BBBartimaeus By Design INC. | Thomasville | NC | — | ◇ UNVERIFIED |
 Basic Carbide Corp/lowber Facility | Lowber | PA | — | ◇ UNVERIFIED |
| BRBaton Rouge Machine Works INC | Baton Rouge | LA | — | ◇ UNVERIFIED |
| BEBaxter Enterpries | Winchester | TN | — | ◇ UNVERIFIED |
| BMBay Machining and Sales INC | Bay City | MI | — | ◇ UNVERIFIED |
| BSBay Swiss Manufacturing | Dayton | NV | — | ◇ UNVERIFIED |
| BBB & B Pipe & Tool Company | Long Beach | CA | — | ◇ UNVERIFIED |
| BCB C Doering | Costa Mesa | CA | — | ◇ UNVERIFIED |
| BIBc Industries | Oxford | MA | — | ◇ UNVERIFIED |
| BIBehr Iron & Metal | Peoria | IL | — | ◇ UNVERIFIED |
| BCBelcher (advanced Cast Products) | Easton | MA | — | ◇ UNVERIFIED |
| BFBell Foundry CO | South Gate | CA | — | ◇ UNVERIFIED |
| BMBender Machine INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| BCBentonville Castings Company | Bentonville | AR | — | ◇ UNVERIFIED |
| BIBerkshire Industries | Westfield | MA | — | ◇ UNVERIFIED |
| BRBesco Recycling | Bessemer | AL | — | ◇ UNVERIFIED |
| B3Big 3 Precision Prod INC | Centralia | IL | — | ◇ UNVERIFIED |
| BFBig Four Foundries CORP | Tulsa | OK | — | ◇ UNVERIFIED |
| BMBiltrite Metal Products | Leland | IL | — | ◇ UNVERIFIED |
| BJBird Johnson CO | Seattle | WA | — | ◇ UNVERIFIED |
| BMBirmingham Metal Products INC | Birmingham | OH | — | ◇ UNVERIFIED |
| BMBiwal Mfg CO INC | Clifton City | NJ | — | ◇ UNVERIFIED |
| BFBlackhawk Foundry & Machine CO | Davenport | IA | — | ◇ UNVERIFIED |
| BLB L Fabricators, INC. | Scottsboro | AL | — | ◇ UNVERIFIED |
| BFBloomfield Foundry, INC | Bloomfield | IA | — | ◇ UNVERIFIED |
| BHBlp Holdings | Houston | TX | — | ◇ UNVERIFIED |
| BTBluegrass Tool & Industrial LLC | Lexington | KY | — | ◇ UNVERIFIED |
| BMBluestone Machine Company | Princeton | WV | — | ◇ UNVERIFIED |
| BABobby's Auto Machine Shop | Fort Pierce | FL | — | ◇ UNVERIFIED |
| BWBobe Water & Fire LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| BBBob's Barricades | N Fort Myers | FL | — | ◇ UNVERIFIED |
| BTBoley Tool & Machine | East Peoria | IL | — | ◇ UNVERIFIED |
| BTBorgwarner Thermal Systems - Fletcher Plant | Fletcher | NC | — | ◇ UNVERIFIED |
| BTBoston Trailer Manufacturing Company | Walpole | MA | — | ◇ UNVERIFIED |
| BSBoulder Steel, INC | Broomfield | CO | — | ◇ UNVERIFIED |
| BFBoyertown Foundry Co/fka Eafco | New Berlinville | PA | — | ◇ UNVERIFIED |
| BCBradley CORP | Germantown | WI | — | ◇ UNVERIFIED |
| BTBranton Tools Machine Shop | Bossier City | LA | — | ◇ UNVERIFIED |
| BHBrembo Homer Foundry | Homer | MI | — | ◇ UNVERIFIED |
| BCBridgewater Correctional Complex | Bridgewater | MA | — | ◇ UNVERIFIED |
| BEBrierton Engineering | Abilene | KS | — | ◇ UNVERIFIED |
| BNBright N Ready Signs & Awnings | Englewood | FL | — | ◇ UNVERIFIED |
| BMBrom Machine & Foundry CO | Winona | MN | — | ◇ UNVERIFIED |
| BIBrudi INC Kelso | Kelso | WA | — | ◇ UNVERIFIED |
| BBBrundage Bone Concrete | Kent | WA | — | ◇ UNVERIFIED |
| BRBull Run Machine and Welding | Knoxville | TN | — | ◇ UNVERIFIED |
| BMBurgess-norton Mfg CO / Std Auto Parts CO Div | Muskegon | MI | — | ◇ UNVERIFIED |
| BIBurtman Iron Works | Boston | MA | — | ◇ UNVERIFIED |
| BPBusche Performance Group, Dba Mobex Global - Plant 9 | Albion | IN | — | ◇ UNVERIFIED |
| BPBushe Performance Group, Dba Mobex Global - Plant 2 | Edon | OH | — | ◇ UNVERIFIED |
