| AIAlliance Industrial Group INC | Seattle | — | ◇ UNVERIFIED |
| AMAll Metals Fabricators INC | Seattle | — | ◇ UNVERIFIED |
| AIAlloyed INC | Seattle | — | ◇ UNVERIFIED |
| AIAlutek INC | Spokane Valley | — | ◇ UNVERIFIED |
 American Metal Specialties, Inc. | University Place | — | ◇ UNVERIFIED |
| ACAmerican-national Can CO | Kent | — | ◇ UNVERIFIED |
| ASAmerican Structures and Design INC. | Sumner | — | ◇ UNVERIFIED |
| AMAM Manufacturing, Inc. | Enumclaw | — | ◇ UNVERIFIED |
| AMAM Manufacturing, Inc. | Buckley | — | ◇ UNVERIFIED |
| AIApex Industries INC | Spokane Valley | — | ◇ UNVERIFIED |
| ACApogee Culinary Designs LLC | Vancouver | — | ◇ UNVERIFIED |
| AEAquacare Environment, INC. | Bellingham | — | ◇ UNVERIFIED |
| ARA & R Aviation Services | Tumwater | — | ◇ UNVERIFIED |
| ASArcadia Security and Patrol | Vancouver | — | ◇ UNVERIFIED |
| AEArchitectural Elements | Bellingham | — | ◇ UNVERIFIED |
| AFArchitectural Fabrications INC | Auburn | — | ◇ UNVERIFIED |
| ATAro Tek Engineering INC | Tumwater | — | ◇ UNVERIFIED |
| AIArtistic Iron INC | Woodland | — | ◇ UNVERIFIED |
| AAAssa Abloy Service Center | Kent | — | ◇ UNVERIFIED |
| BSBallard Sheet Metal Wks INC | Seattle | — | ◇ UNVERIFIED |
| BLBatech, LLC | Kent | — | ◇ UNVERIFIED |
| BHBCK Holdings LLC | Marysville | — | ◇ UNVERIFIED |
| BCBerg Companies | Spokane | — | ◇ UNVERIFIED |
| BVBerrydale Ventures LLC | Kent | — | ◇ UNVERIFIED |
| BTBessemer Trading Inc. | Seattle | — | ◇ UNVERIFIED |
| BMBirdwell Machine LLC | Redmond | — | ◇ UNVERIFIED |
| BMBirdwell Machine LLC Everett | Everett | — | ◇ UNVERIFIED |
| BTBlockhead Tools INC | Lynnwood | — | ◇ UNVERIFIED |
| BCBowman Connect LLC | Seattle | — | ◇ UNVERIFIED |
| BIBusby International | Moses Lake | — | ◇ UNVERIFIED |
| CMCan-Do Machine Tools, LLC | Mukilteo | — | ◇ UNVERIFIED |
| CUCarlos Undercoating Sandblast | Seatac | — | ◇ UNVERIFIED |
| CZCarl Zapffe INC Aurora | Seattle | — | ◇ UNVERIFIED |
| CCCascade Container Fab Company | Ridgefield | — | ◇ UNVERIFIED |
| CBCb Bumper CO INC | Olympia | — | ◇ UNVERIFIED |
| CMCd'a Metals | Wenatchee | — | ◇ UNVERIFIED |
| CAChan and Sons LLC | Seattle | — | ◇ UNVERIFIED |
| CWChewelah Welding and Machine I | Chewelah | — | ◇ UNVERIFIED |
 C&J Industries Inc. | Kent | — | ◇ UNVERIFIED |
| CKCliff Koppe Metals | Kelso | — | ◇ UNVERIFIED |
| CAClint and Brenda Grassel, LLC | Liberty Lake | — | ◇ UNVERIFIED |
| CRCmc Rebar - Wa - Auburn South | Auburn | — | ◇ UNVERIFIED |
| CDCobalt Development, Inc. | Arlington | — | ◇ UNVERIFIED |
 Cobalt Enterprises, L.L.C. | Granite Falls | — | ◇ UNVERIFIED |
| CBColumbia Basin Machine Company | Moses Lake | — | ◇ UNVERIFIED |
| CEColumbia Energy and Environmental Svcs INC | Richland | — | ◇ UNVERIFIED |
| CRColumbia River Arms | Moses Lake | — | ◇ UNVERIFIED |
| CAComplex Aerospace, LLC | Auburn | — | ◇ UNVERIFIED |
| CMConsolidated Metco, INC. | Vancouver | — | ◇ UNVERIFIED |
| CCContinental Can CO | Vancouver | — | ◇ UNVERIFIED |
