| AUAcco USA INC | Wheeling | IL | Fabricated Metal Product Manufacturing332439 | — | ◇ UNVERIFIED |
| APAccurate Partitions CORP | Mccook | IL | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| ASAcme Screw Company | Wheaton | IL | Fabricated Metal Product Manufacturing332722 | — | ◇ UNVERIFIED |
| ARAction Rack & Mfg CO | Chicago | IL | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| ACAdjustable Clamp CO | Chicago | IL | Fabricated Metal Product Manufacturing332510 | — | ◇ UNVERIFIED |
 Advanced Drainage Systems | Mendota | IL | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| AGAdvanced Galvanics INC | Bensenville | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| AAAdvantage Autobody | Hampton | IL | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| APAero Plating Works | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| AMAlabama Metal Industries CORP | Bourbonnais | IL | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| ABAl Bar-wilmette Platers | Wilmette | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| AIAlchemitron INC | Elgin | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| ALAlfa Laval Inc-standard Refrigeration | Wood Dale | IL | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| AHAllied Hastings Barrel Drum Service | Chicago | IL | Fabricated Metal Product Manufacturing332439 | — | ◇ UNVERIFIED |
| AMAll Metals Recycling | Franklin Park | IL | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| AIAlloyweld Inspection | Bensenville | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| ASAll Spun Metal Products | Des Plaines | IL | Fabricated Metal Product Manufacturing332111 | — | ◇ UNVERIFIED |
| AIAltrachem INC | Joliet | IL | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| APAmax Plating Incorporated | Elgin | IL | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| AEAmber Engineering & Mfg CO | Elk Grove Village | IL | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| APAmber Plating Works INC | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| ACAmerican/jebco CORP | Franklin Park | IL | Fabricated Metal Product Manufacturing332722 | — | ◇ UNVERIFIED |
| ALAmerican Lock CO | Crete | IL | Fabricated Metal Product Manufacturing332510 | — | ◇ UNVERIFIED |
| AMAmerican Metal Fibers, Incorporated | Lake Bluff | IL | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| AMAmerican Midwest Chrome Plating & Polishing | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| ARAmerican Rack CO | Chicago | IL | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| ACAmerock CORP | Rockford | IL | Fabricated Metal Product Manufacturing332510 | — | ◇ UNVERIFIED |
| ADAmilan Distributors INC | Bensenville | IL | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| ACAnchor Coupling CO | Dixon | IL | Fabricated Metal Product Manufacturing332912 | — | ◇ UNVERIFIED |
| AFAnderson Fittings | Oak Forest | IL | Fabricated Metal Product Manufacturing332919 | — | ◇ UNVERIFIED |
| ADApco Deburring & Polishing INC | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| ASArcher Screw Products | Franklin Park | IL | Fabricated Metal Product Manufacturing332721 | — | ◇ UNVERIFIED |
| ASArchitectural Specialty Products INC | Chicago | IL | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| ADArea Diesel Service INC | Carlinville | IL | Fabricated Metal Product Manufacturing332721 | — | ◇ UNVERIFIED |
| ARA & R Plating | Bridgeview | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| AGArrow Group Ind INC | Breese | IL | Fabricated Metal Product Manufacturing332311 | — | ◇ UNVERIFIED |
| AAAssa Abloy | Carol Stream | IL | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| APAssembled Products | Buffalo Grove | IL | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| AIAstroblast INC | Franklin Park | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| AFAta Finishing CORP | Skokie | IL | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| ASAtlas Solid Tooling | Arlington Heights | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| AMAtwood Mobile Products | Rockford | IL | Fabricated Metal Product Manufacturing332510 | — | ◇ UNVERIFIED |
| AMAubrey Manufacturing INC | Union | IL | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| ADAurora Distribution Center - 3m Company | Aurora | IL | Fabricated Metal Product Manufacturing332510 | — | ◇ UNVERIFIED |
| AIAxletech International - US Gear Division | Chicago | IL | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| BSBabbitting Svc | South Elgin | IL | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| BABall Aerosol & Specialty Container INC | Elgin | IL | Fabricated Metal Product Manufacturing332431 | — | ◇ UNVERIFIED |
| BTBalzers Tool Coating INC | Elgin | IL | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| BPBarnes Plating CORP | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
 Barron Industries | Rockford | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
