| NSNorthwestern Steel & Wire CO | Rock Falls | IL | — | ◇ UNVERIFIED |
| NNNsci Nippon Steel & Sumikin Cold Heading Wire Indiana | Shelbyville | IN | — | ◇ UNVERIFIED |
| NINsd INC | Saint Paul | MN | — | ◇ UNVERIFIED |
| NINsd, INC. | Maplewood | MN | — | ◇ UNVERIFIED |
| NTNupro Tech LLC | Lebanon | PA | — | ◇ UNVERIFIED |
| NWNutmeg Wire, INC. | Baltic | CT | — | ◇ UNVERIFIED |
| OWO'brien Wire Products of Texas, INC. | Houston | TX | — | ◇ UNVERIFIED |
| OIOfco INC | Coshocton | OH | — | ◇ UNVERIFIED |
| OWOhio Wire Form & Spring Company | Columbus | OH | — | ◇ UNVERIFIED |
| OKO & K American CORP. | Chicago | IL | — | ◇ UNVERIFIED |
 Olsen Chain & Cable - Edina | Edina | MN | — | ◇ UNVERIFIED |
| Olsen Chain - Cable INC | Moorhead | MN | — | ◇ UNVERIFIED |
| OLOrganized Living | Bloomington | IN | — | ◇ UNVERIFIED |
| OOrtech | Kirksville | MO | — | ◇ UNVERIFIED |
| OWOzark Wire LTD INC | Malden | MO | — | ◇ UNVERIFIED |
| PRPaducah Rigging, INC. | Reserve | LA | — | ◇ UNVERIFIED |
| PAPage Alumnized Steel | Monessen | PA | — | ◇ UNVERIFIED |
| PCPanduit CORP | Romeoville | IL | — | ◇ UNVERIFIED |
| PMParker Metals | Worcester | MA | — | ◇ UNVERIFIED |
| PWPaul Wilke & Son, INC. | Cincinnati | OH | — | ◇ UNVERIFIED |
| PIPeace Industries LTD | Rolling Meadows | IL | — | ◇ UNVERIFIED |
| PWPeltier Wire Cloth Company | Saint Paul | MN | — | ◇ UNVERIFIED |
| PWPentwater Wire Products, INC. | Pentwater | MI | — | ◇ UNVERIFIED |
| PSPerfection Spring & Stamping CORP | Mount Prospect | IL | — | ◇ UNVERIFIED |
| PMPetschke Manufacturing Company INC. | Mount Clemens | MI | — | ◇ UNVERIFIED |
| PWPfeifer Wire Rope & Lifting Technology | Hampton | VA | — | ◇ UNVERIFIED |
| PWPhoenix West Stable Products & Engraving | Irwindale | CA | — | ◇ UNVERIFIED |
| PCPizzo Contracting, INC. | Toms River | NJ | — | ◇ UNVERIFIED |
| PRPope Rigging Loft INC | Portland | OR | — | ◇ UNVERIFIED |
| PAPosco - Aapc | Jeffersonville | IN | — | ◇ UNVERIFIED |
| PNPrebena N. A. Fastener CORP. | Bridgeport | WV | — | ◇ UNVERIFIED |
| PIPrecision Ironworks | Boise | ID | — | ◇ UNVERIFIED |
| PKPrecision Kidd Steel/aliquippa | Aliquippa | PA | — | ◇ UNVERIFIED |
| PSPrecision Steel LLC | Calvert City | KY | — | ◇ UNVERIFIED |
| PWPrecision Wire Cut, INC. | Waterbury | CT | — | ◇ UNVERIFIED |
| PWPreferred Wire Products, INC. | Clovis | CA | — | ◇ UNVERIFIED |
| PMPremiere Manufacturing Corporation | Henderson | TN | — | ◇ UNVERIFIED |
| PWPrestolite Wire Copy | Southfield | MI | — | ◇ UNVERIFIED |
| PRProgress Rail Services-danvers Trackwork | Danvers | IL | — | ◇ UNVERIFIED |
| PWProgress Wire Products CO. | Cleveland | OH | — | ◇ UNVERIFIED |
| PPPronto Products Co. | San Diego | CA | — | ◇ UNVERIFIED |
| PPPronto Products Co. | San Diego | CA | — | ◇ UNVERIFIED |
| PSPr Steel Products CORP | Ponce | PR | — | ◇ UNVERIFIED |
| PSPte Systems International LLC | Hialeah | FL | — | ◇ UNVERIFIED |
| PFPurolator Facet Dba Parker Ipf Metalics | Greensboro | NC | — | ◇ UNVERIFIED |
| PIPyrotek Incorporated | Columbia City | IN | — | ◇ UNVERIFIED |
| QWQuality Wire Processing INC | Taylor | MI | — | ◇ UNVERIFIED |
| RIRacine Iron & Wire Works, INC | Racine | WI | — | ◇ UNVERIFIED |
 Rapid Manufacturing | Orange | CA | — | ◇ UNVERIFIED |
| RBR & B Wire Prod. INC | Santa Ana | CA | — | ◇ UNVERIFIED |
