| AIAdvanta Industries INC | Petersburg | MI | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| AAerofin | Lynchburg | VA | Fabricated Metal Product Manufacturing332410 | 100-499 | ◐ LIKELY ACTIVE |
| ALAerofit, LLC | Fullerton | CA | Fabricated Metal Product Manufacturing332912 | — | ◐ LIKELY ACTIVE |
| ARAerojet Rocketdyne, INC. | East Camden | AR | Fabricated Metal Product Manufacturing332993 | — | ◐ LIKELY ACTIVE |
Aero-mechanical Engineering, INC | Huntington Beach | CA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| ACAeroquip Corporation | Van Wert | OH | Fabricated Metal Product Manufacturing332912 | — | ◐ LIKELY ACTIVE |
| AIAes Industries INC | Tallassee | AL | Fabricated Metal Product Manufacturing332312 | 100-499 | ◐ LIKELY ACTIVE |
| ACAfc Cable Systems | New Bedford | MA | Fabricated Metal Product Manufacturing332618 | 100-499 | ◐ LIKELY ACTIVE |
| AIAgra Industries INC | Merrill | WI | Primary Metal Manufacturing331200 | 20-99 | ◐ LIKELY ACTIVE |
| AIAgri-fab INC | Sullivan | IL | Fabricated Metal Product Manufacturing332119 | 100-499 | ◐ LIKELY ACTIVE |
| AIAgritek Industries INC | Holland | MI | Fabricated Metal Product Manufacturing332116 | 20-99 | ◐ LIKELY ACTIVE |
| AGA G Simpson (usa), INC. | Sterling Hts | MI | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| AHA H Stock Mfg Corporation | Newton | WI | Fabricated Metal Product Manufacturing332313 | 20-99 | ◐ LIKELY ACTIVE |
| AFAir Force: Utah Test & Training Range - Suite 200 | Hill Afb | UT | Fabricated Metal Product Manufacturing332993 | — | ◐ LIKELY ACTIVE |
| AHAir Heater Seal CO | Waterford | OH | Fabricated Metal Product Manufacturing332313 | 20-99 | ◐ LIKELY ACTIVE |
| AIAir Industries Company, LLC | Garden Grove | CA | Fabricated Metal Product Manufacturing332722 | 100-499 | ◐ LIKELY ACTIVE |
| AAirlanco | Falls City | NE | Fabricated Metal Product Manufacturing332321 | 20-99 | ◐ LIKELY ACTIVE |
| ASAir System Components | El Paso | TX | Fabricated Metal Product Manufacturing332322 | 100-499 | ◐ LIKELY ACTIVE |
| ASAir Systems Components | Tarboro | NC | Fabricated Metal Product Manufacturing332322 | — | ◐ LIKELY ACTIVE |
| AMAjax Metal Processing INC. (b5830) | Detroit | MI | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
A & J Manufacturing CO | Foothill Ranch | CA | Fabricated Metal Product Manufacturing332323 | — | ◐ LIKELY ACTIVE |
| AWAlan Wire CO | Sikeston | MO | Primary Metal Manufacturing331420 | — | ◐ LIKELY ACTIVE |
| AFAlcoa Fastening Systems | Tucson | AZ | Fabricated Metal Product Manufacturing332722 | — | ◐ LIKELY ACTIVE |
| AGAlcoa Global Fastening Systems C/o Howmet Fastening Systems | City of Industry | CA | Fabricated Metal Product Manufacturing332722 | — | ◐ LIKELY ACTIVE |
| ASAlco Spring Industries INC | Chicago Heights | IL | Fabricated Metal Product Manufacturing332111 | 20-99 | ◐ LIKELY ACTIVE |
Alexander Machine & Tool Company, LLC. | Woburn | MA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| ATAllan Tool & Machine CO INC | Troy | MI | Fabricated Metal Product Manufacturing332721 | 20-99 | ◐ LIKELY ACTIVE |
| ACAllegheny Coatings | Ridgway | PA | Fabricated Metal Product Manufacturing332812 | 20-99 | ◐ LIKELY ACTIVE |
| ACAllegheny Coatings-boot Jack | Ridgway | PA | Fabricated Metal Product Manufacturing332812 | 20-99 | ◐ LIKELY ACTIVE |
| AMAllegiant Manufacturing LLC | Kansas City | KS | Fabricated Metal Product Manufacturing332119 | 20-99 | ◐ LIKELY ACTIVE |
| AFAllied Finishing INC | Grand Rapids | MI | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| ASAllied Steel Corporation | Saraland | AL | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| ASAllied Steel Fabricators INC | Redmond | WA | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
Alli Fabrication LLC | Collingdale | PA | Fabricated Metal Product Manufacturing332322 | — | ◐ LIKELY ACTIVE |
| ABAllmand Brothers INC | Holdrege | NE | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| AMAll Metals Processing of Orange Co., LLC | Stanton | CA | Fabricated Metal Product Manufacturing332813 | 100-499 | ◐ LIKELY ACTIVE |
| AMAll Metal Stamping INC. | Abbotsford | WI | Fabricated Metal Product Manufacturing332510 | 20-99 | ◐ LIKELY ACTIVE |
| APAlloy Products CORP | Waukesha | WI | Fabricated Metal Product Manufacturing332420 | — | ◐ LIKELY ACTIVE |
| AWAll Weather Insulated Panels | Little Rock | AR | Fabricated Metal Product Manufacturing332311 | 20-99 | ◐ LIKELY ACTIVE |
| AIAlmet INC | New Haven | IN | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| ABAltenloh, Brinck & CO. U.s., INC | Pioneer | OH | Fabricated Metal Product Manufacturing332811 | 100-499 | ◐ LIKELY ACTIVE |
Alternative Design Manufacturing and Supply, INC. | Siloam Springs | AR | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| ATAluma Tower Company, INC. | Vero Beach | FL | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| APAmacs Process Tower Internals | Houston | TX | Fabricated Metal Product Manufacturing332618 | 100-499 | ◐ LIKELY ACTIVE |
| AAAmerican Appliance Products, INC. | Newport | TN | Fabricated Metal Product Manufacturing332618 | — | ◐ LIKELY ACTIVE |
| AAAmerican Avk Company | Minden | NV | Fabricated Metal Product Manufacturing332911 | 100-499 | ◐ LIKELY ACTIVE |
| ACAmerican Carbonyl, LLC | Redstone Arsenal | AL | Primary Metal Manufacturing331491 | 1-19 | ◐ LIKELY ACTIVE |
| AEAmerican Electro Products | Waterbury | CT | Fabricated Metal Product Manufacturing332813 | 100-499 | ◐ LIKELY ACTIVE |
American Exchanger Services, INC. | Hartford | WI | Fabricated Metal Product Manufacturing332410 | — | ◐ LIKELY ACTIVE |
| AFAmerican Fabricators, INC. | Lebanon | TN | Fabricated Metal Product Manufacturing332322 | 100-499 | ◐ LIKELY ACTIVE |