| NENeumeier Engineering, Inc. | Federal Way | — | ◇ UNVERIFIED |
| NTNew Tech Industries INC | Mukilteo | — | ◇ UNVERIFIED |
| NENorthwest Etch Technology Site | Auburn | — | ◇ UNVERIFIED |
| NMNorthwest Metals Fabrication | Arlington | — | ◇ UNVERIFIED |
| NPNorthwest Plating | Seattle | — | ◇ UNVERIFIED |
| NPNorthwest Precision Properties LLC | Vancouver | — | ◇ UNVERIFIED |
| NFNW Fluid Power & Controls Co. LLC | Auburn | — | ◇ UNVERIFIED |
| OGOde Gutter Products | Kent | — | ◇ UNVERIFIED |
| OOmniduct | Everett | — | ◇ UNVERIFIED |
| OAOmniduct Arlington | Arlington | — | ◇ UNVERIFIED |
| PAPacific Air Cargo Transfer Systems, Inc | Auburn | — | ◇ UNVERIFIED |
| PTPacific Tank & Energy LLC | Arlington | — | ◇ UNVERIFIED |
| PTPacific Tool, Inc. | Redmond | — | ◇ UNVERIFIED |
| PCParsons Constructors Site | Pasco | — | ◇ UNVERIFIED |
| PPPerfection Powder Coating & Fa | Puyallup | — | ◇ UNVERIFIED |
| PPPerfection Powder Coating & Fabrication, INC | Puyallup | — | ◇ UNVERIFIED |
| PMPnp Manufacturing INC | Arlington | — | ◇ UNVERIFIED |
| PMPolaris Machining | Marysville | — | ◇ UNVERIFIED |
| POPort of Bremerton Wilkins Distributing | Port Orchard | — | ◇ UNVERIFIED |
| PLPractik LLC | Seattle | — | ◇ UNVERIFIED |
 Precision Fabrication LLC | Yakima | — | ◇ UNVERIFIED |
| PFPrecision Fabricators LLC | Seattle | — | ◇ UNVERIFIED |
| PIPremetco, INC. | Auburn | — | ◇ UNVERIFIED |
| PPPremier Powder Coating & | Sumner | — | ◇ UNVERIFIED |
 Prowse Manufacturing Group | Arlington | — | ◇ UNVERIFIED |
| PIPsf Industries | Seattle | — | ◇ UNVERIFIED |
| PSPuget Sound Repair INC | Seattle | — | ◇ UNVERIFIED |
| RPRainier Precision | Seattle | — | ◇ UNVERIFIED |
| RMRam Mounting Systems | Seattle | — | ◇ UNVERIFIED |
| RTRamps to You LLC | Spokane Valley | — | ◇ UNVERIFIED |
| RLRcpm LLC | Bellevue | — | ◇ UNVERIFIED |
| RTRealta Thuaidh L.L.C. | Vancouver | — | ◇ UNVERIFIED |
| RRRecon Racks | Ferndale | — | ◇ UNVERIFIED |
| RSRed Soul, LLC | Seattle | — | ◇ UNVERIFIED |
| RMRedstone Manufacturing USA LLC | Seattle | — | ◇ UNVERIFIED |
| RMRhinehart Metalworks | Seattle | — | ◇ UNVERIFIED |
| RIRMC Incorporated | Seattle | — | ◇ UNVERIFIED |
| RPRmc Powder Coating | Seattle | — | ◇ UNVERIFIED |
| RMRobert M. Smith & Susan B. Smith | College Place | — | ◇ UNVERIFIED |
| RFRogue Fabricators Inc | Poulsbo | — | ◇ UNVERIFIED |
| RMRs Machine INC | Vancouver | — | ◇ UNVERIFIED |
| SDS&D Developing Company, LLC | Kent | — | ◇ UNVERIFIED |
| SDS & D Holdings LLC | Vancouver | — | ◇ UNVERIFIED |
| SDS & D Holdings LLC | Vancouver | — | ◇ UNVERIFIED |
| SCSeaFab Corporation | Seattle | — | ◇ UNVERIFIED |
| SCSeattle City Mercer Corridor | Seattle | — | ◇ UNVERIFIED |
| SGSeattle Galvanizing Company, Inc. | Kirkland | — | ◇ UNVERIFIED |
| SPSeattle Precision Form, Inc. | Kent | — | ◇ UNVERIFIED |
| STSeattle Technical Finishing INC | Seattle | — | ◇ UNVERIFIED |
| SMShoemaker Manufacturing CO | Cle Elum | — | ◇ UNVERIFIED |
