| AAAction Architectural Fabricators, INC. | Marion | AR | — | ◇ UNVERIFIED |
| AMAdams Manufacturing | Matheny | WV | — | ◇ UNVERIFIED |
| ATAdams Truss | Gentry | AR | — | ◇ UNVERIFIED |
| ACAddison Corporation | Bend | OR | — | ◇ UNVERIFIED |
| ASAddison Steel INC | Albany | GA | — | ◇ UNVERIFIED |
| AIA&D Innovative Steel Inc | Bogota | NJ | — | ◇ UNVERIFIED |
| AMAdm Milling CO. Econo-flo Flour Service | Salina | KS | — | ◇ UNVERIFIED |
| AFAdobe Fab Consultants, INC. | Conroe | TX | — | ◇ UNVERIFIED |
| ATAdp Totalsource Nh Xxviii INC | Fraser | MI | — | ◇ UNVERIFIED |
| ASAdrian Steel | Kansas City | MO | — | ◇ UNVERIFIED |
| AIAdvanced Iron Concepts | Placentia | CA | — | ◇ UNVERIFIED |
 Advanced Manufacturing & Engineering CORP. | Ocala | FL | — | ◇ UNVERIFIED |
| AMAdvanced Mezzanine Systems LLC | Stafford | VA | — | ◇ UNVERIFIED |
| APAdvanced Prototype Engineering | San Francisco | CA | — | ◇ UNVERIFIED |
| ASAdvantage Steel, INC. | Tampa | FL | — | ◇ UNVERIFIED |
| AMAdventure Machine & Fab, INC. | Port Lavaca | TX | — | ◇ UNVERIFIED |
| ACAdvex Corporation | Hampton | VA | — | ◇ UNVERIFIED |
| AIAdw Industries-alma | Alma | MI | — | ◇ UNVERIFIED |
| ASAec Seneca-closed | Seneca | SC | — | ◇ UNVERIFIED |
| AEA+ Engineering and Fabrication, INC. | Grand Rapids | OH | — | ◇ UNVERIFIED |
| ASAerial Structure INC | Schertz | TX | — | ◇ UNVERIFIED |
| AAerotek | Bristol | VA | — | ◇ UNVERIFIED |
| ASAes Sunoptics INC | Sacramento | CA | — | ◇ UNVERIFIED |
| AIA-fab Industries, LLC | Keller | TX | — | ◇ UNVERIFIED |
| AMAfco Manufacturing | Holly | MI | — | ◇ UNVERIFIED |
| AMAfco Manufacturing INC. | Covington | KY | — | ◇ UNVERIFIED |
| ASAfco Steel | Little Rock | AR | — | ◇ UNVERIFIED |
| ASAfco Steel, LLC | Van Buren | AR | — | ◇ UNVERIFIED |
| AUAfinitas US INC | New Hampton | IA | — | ◇ UNVERIFIED |
| AWAF Welding & Manufacturing LLC | Hutchinson | KS | — | ◇ UNVERIFIED |
| AWAF Welding & Manufacturing LLC | Inman | KS | — | ◇ UNVERIFIED |
| ASAgate Steel INC. | Reno | NV | — | ◇ UNVERIFIED |
| AIAg Industrial Manufacturing INC | Lodi | CA | — | ◇ UNVERIFIED |
| ALAg Light and Sound INC | Ronkonkoma | NY | — | ◇ UNVERIFIED |
| AMAgtek Metal Works & Millwright, INC. | Hartville | MO | — | ◇ UNVERIFIED |
| AFAhc Fabrication CO. | Beggs | OK | — | ◇ UNVERIFIED |
| AFAhlborn Fence & Steel INC | Santa Rosa | CA | — | ◇ UNVERIFIED |
| ACAIMetals, Corp | Dallas | TX | — | ◇ UNVERIFIED |
| ASAim Steel International, INC. | Morrow | GA | — | ◇ UNVERIFIED |
| ACAir Capital Flight Line Hangar | Wichita | KS | — | ◇ UNVERIFIED |
| AEAircraft Extrusion CO | Chico | CA | — | ◇ UNVERIFIED |
 Aircraft Welding, INC. | Willoughby | OH | — | ◇ UNVERIFIED |
| ADAir Duct, INC. | Tulsa | OK | — | ◇ UNVERIFIED |
| AIA & I Steel Fabricators, INC. | Pomona | CA | — | ◇ UNVERIFIED |
| AJA & J Fabricators, INC. | Minco | OK | — | ◇ UNVERIFIED |
| AJA & J Welding | Pomona | CA | — | ◇ UNVERIFIED |
| AKA & K Machine & Fab Shop, INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| ALAkm LLC Dba Volks Constructors | Prairieville | LA | — | ◇ UNVERIFIED |
| AMAlabama Metal Fabricators, INC. | Elberta | AL | — | ◇ UNVERIFIED |
| AMAlabama Metal Industries CORP | Bourbonnais | IL | — | ◇ UNVERIFIED |
| ASAlamance Steel Fabricators, INC. | Archdale | NC | — | ◇ UNVERIFIED |
| AFAlbatross Fabrication LLC | Spirit Lake | ID | — | ◇ UNVERIFIED |
| ACAl Cassettari Enterprises, INC. | Banta | CA | — | ◇ UNVERIFIED |
| ATAlcoa Titanium & Engineered Products | Niles | OH | — | ◇ UNVERIFIED |
| ADAlenco, Div of Reliant Bldg Products | Bryan | TX | — | ◇ UNVERIFIED |
| ASAlfa Steel Construction | Union | NJ | — | ◇ UNVERIFIED |
| ASAli's Steel Fabricating Corp. | Jamaica | NY | — | ◇ UNVERIFIED |
| AGAljo - Gefa Precision Mfg., LLC | Old Bethpage | NY | — | ◇ UNVERIFIED |
| AAAll Around Metal Buildings, LLC | Godley | TX | — | ◇ UNVERIFIED |
| ACAll Custom Fabrications Inc | brooksville | FL | — | ◇ UNVERIFIED |
| ARAllegheny Rebar Incorporated | Glassport | PA | — | ◇ UNVERIFIED |
| AIAllegiant Industrial Island Park | Beaumont | TX | — | ◇ UNVERIFIED |
| AIAllen Iron Works and Supply, INC. | Tarrant | AL | — | ◇ UNVERIFIED |
| AMAllen Machine INC. | Montclair | CA | — | ◇ UNVERIFIED |
| ASAllen Steel Fabricating Co* | Columbia | TN | — | ◇ UNVERIFIED |
| ASAlliance Steel & Fabrications, INC. | Manassas Park | VA | — | ◇ UNVERIFIED |
| ACAllison Conveyor Engineering | Allison | PA | — | ◇ UNVERIFIED |
| ARAllison Resources, LLC | Ada | OK | — | ◇ UNVERIFIED |
| AMAll Metal Acquisitions, LLC | Cowarts | AL | — | ◇ UNVERIFIED |
| AMAll Metal Recycling INC | Springfield | MO | — | ◇ UNVERIFIED |
| AMAll Metals LLC | Clackamas | OR | — | ◇ UNVERIFIED |
| AMAll Metals Welding & Fabrication INC | Mount Dora | FL | — | ◇ UNVERIFIED |
| AHAlloy Hardfacing - Engineering CO INC | Jordan | MN | — | ◇ UNVERIFIED |
| ASAll Scenic LLC | Las Vegas | NV | — | ◇ UNVERIFIED |
| ASAll Service Machine Shop INC. | Chalmette | LA | — | ◇ UNVERIFIED |
| ASAllstate Steel CO | Jacksonville | FL | — | ◇ UNVERIFIED |
| ATAllstate Tower INC | Henderson | KY | — | ◇ UNVERIFIED |
| AWAll Weld Steel INC. | Glenside | PA | — | ◇ UNVERIFIED |
| AIAlmeda INC | Parkersburg | WV | — | ◇ UNVERIFIED |
| AAlnc | San Angelo | TX | — | ◇ UNVERIFIED |
| AWAloha Welding INC | Hillsboro | OR | — | ◇ UNVERIFIED |
 Alonso & Carus Iron Works INC | Catano | PR | — | ◇ UNVERIFIED |
| AFAlpha Fabrication | San Bernardino | CA | — | ◇ UNVERIFIED |
| AIAlpha Irons Works LLC | Rochester | NY | — | ◇ UNVERIFIED |
| ASAlpha Steel CORP | Salem | OR | — | ◇ UNVERIFIED |
| ASAlpine Steel Fabricators | Colorado Springs | CO | — | ◇ UNVERIFIED |
| ATAlpine Tool, INC. | Tioga | LA | — | ◇ UNVERIFIED |
| AIAlply INC | De Kalb | MS | — | ◇ UNVERIFIED |
| ASAlro Steel INC (1431154016) | Cincinnati | OH | — | ◇ UNVERIFIED |
| APAl's Plating Company | Fort Worth | TX | — | ◇ UNVERIFIED |
| ASAl Steel Fabricators | Roanoke | VA | — | ◇ UNVERIFIED |
| AIAltrachem INC | Joliet | IL | — | ◇ UNVERIFIED |
| AAlumafold | Whittier | CA | — | ◇ UNVERIFIED |
| AAlumasteel | Salt Lake City | UT | — | ◇ UNVERIFIED |
| ASAluma Steel Mfg INC. | Salt Lake City | UT | — | ◇ UNVERIFIED |
| AFAmarillo Facility Wind Tower Manufacturing | Amarillo | TX | — | ◇ UNVERIFIED |
| ASAmarillo Steel Fabrication and Machine, INC. | Amarillo | TX | — | ◇ UNVERIFIED |
| ASAmazing Steel | Montclair | CA | — | ◇ UNVERIFIED |
| ASAmazing Steel CORP Dba Amazing Hydraulics Dba Mitc | Montclair | CA | — | ◇ UNVERIFIED |
| ABAmbassador Bridge & Paving Supply LLC | Bourbonnais | IL | — | ◇ UNVERIFIED |
