| NSNucor Steel- Berkeley | Huger | SC | Nonmetallic Mineral Product Manufacturing327320 | 500+ | ● ACTIVE |
| NSNucor Steel Brandenburg | Brandenburg | KY | Primary Metal Manufacturing331110 | 500+ | ● ACTIVE |
| NSNucor Steel Decatur | Trinity | AL | Primary Metal Manufacturing331110 | 500+ | ● ACTIVE |
| NSNucor Steel Florida, INC. | Frostproof | FL | Primary Metal Manufacturing331110 | 100-499 | ● ACTIVE |
| NSNucor Steel Kankakee INC | Bourbonnais | IL | Primary Metal Manufacturing331110 | 100-499 | ● ACTIVE |
| NSNucor Steel Kingman LLC | Kingman | AZ | Primary Metal Manufacturing331110 | 100-499 | ● ACTIVE |
Nucor Steel Memphis, INC | Memphis | TN | Primary Metal Manufacturing331110 | 500+ | ● ACTIVE |
| NSNucor Steel Tuscaloosa, INC. | Tuscaloosa | AL | Primary Metal Manufacturing331110 | 100-499 | ● ACTIVE |
O'fallon Casting, L.l.c. | O Fallon | MO | Primary Metal Manufacturing331524 | 100-499 | ● ACTIVE |
| OCOhio Coatings CO. | Yorkville | OH | Primary Metal Manufacturing331111 | 20-99 | ● ACTIVE |
| OSOhio Star Forge CO. | Champion | OH | Primary Metal Manufacturing331210 | 100-499 | ● ACTIVE |
Oil City Iron Works, INC | Corsicana | TX | Primary Metal Manufacturing331511 | 100-499 | ● ACTIVE |
Oliver & Dahlman Equipment Co., INC. | Elkton | FL | Primary Metal Manufacturing331210 | 1-19 | ● ACTIVE |
Olympic Industries, LLC | Cordova | TN | Primary Metal Manufacturing331316 | 20-99 | ● ACTIVE |
Omega Castings, INC | Battle Creek | MI | Primary Metal Manufacturing331511 | 1-19 | ● ACTIVE |
Optical Cable CORP | Roanoke | VA | Primary Metal Manufacturing331491 | 100-499 | ● ACTIVE |
| OSOregon Steel Mills LLC | Portland | OR | Petroleum and Coal Products Manufacturing324199 | — | ● ACTIVE |
| PIPace Industries - Cambridge Div | North Billerica | MA | Primary Metal Manufacturing331521 | 100-499 | ● ACTIVE |
Padgett INC | New Albany | IN | Primary Metal Manufacturing331210 | 100-499 | ● ACTIVE |
Parmatech Corporation | Petaluma | CA | Primary Metal Manufacturing331110 | 20-99 | ● ACTIVE |
Parrish Enterprises, LTD. | Enid | OK | Primary Metal Manufacturing331524 | — | ● ACTIVE |
| PAPcc Airfoils LLC Smp INC | Wickliffe | OH | Primary Metal Manufacturing331529 | 100-499 | ● ACTIVE |
| PAPcc Airfoils Mentor | Mentor | OH | Primary Metal Manufacturing331512 | 100-499 | ● ACTIVE |
Pcc Rollmet, INC | Irvine | CA | Primary Metal Manufacturing331210 | — | ● ACTIVE |
Pcc Structurals, INC. | Portland | OR | Primary Metal Manufacturing331112 | — | ● ACTIVE |
| PSPcc Structurals - San Leandro | San Leandro | CA | Primary Metal Manufacturing331110 | 100-499 | ● ACTIVE |
Pelican Wire CO | Naples | FL | Primary Metal Manufacturing331420 | 20-99 | ● ACTIVE |
| PAPennex Aluminum CO | Wellsville | PA | Primary Metal Manufacturing331314 | 100-499 | ● ACTIVE |
Perryman CO | Houston | PA | Primary Metal Manufacturing331491 | 500+ | ● ACTIVE |
Petersen Incorporated | Ogden | UT | Primary Metal Manufacturing331221 | 100-499 | ● ACTIVE |
| PDPhelps Dodge High Performance Conductors | Inman | SC | Primary Metal Manufacturing331222 | 100-499 | ● ACTIVE |
| PKP Kay Metal INC | Los Angeles | CA | Primary Metal Manufacturing331491 | — | ● ACTIVE |
| PKP Kay Metal LLC - Lewiston Facility | Lewiston | ID | Primary Metal Manufacturing331491 | 20-99 | ● ACTIVE |
Plymouth Tube Company | Salisbury | MD | Primary Metal Manufacturing331210 | 20-99 | ● ACTIVE |
Plymouth Tube Company | East Troy | WI | Primary Metal Manufacturing331210 | 20-99 | ● ACTIVE |
| PIPmx Industries, INC. | Cedar Rapids | IA | Primary Metal Manufacturing331420 | 100-499 | ● ACTIVE |
Prairie View Industries, INC. | Fairbury | NE | Primary Metal Manufacturing331319 | 20-99 | ● ACTIVE |
Precision Casting Prototypes and Engineering INC | Commerce City | CO | Primary Metal Manufacturing331522 | — | ● ACTIVE |
Precision Castings of Tennessee, INC. | Gallatin | TN | Primary Metal Manufacturing331512 | 20-99 | ● ACTIVE |
Precision Components & Assemblies, INC | Saint Peters | MO | Primary Metal Manufacturing331513 | 1-19 | ● ACTIVE |
| PMPrecision Marshall Steel | Washington | PA | Primary Metal Manufacturing331210 | 20-99 | ● ACTIVE |
| PWPrecision Wire Cut, INC. | Waterbury | CT | Primary Metal Manufacturing331222 | 1-19 | ● ACTIVE |
Production Pattern and Foundry CO INC | Mound House | NV | Primary Metal Manufacturing331524 | 20-99 | ● ACTIVE |
| PCPrysmian Cables & Systems USA LLC | Du Quoin | IL | Primary Metal Manufacturing331420 | 100-499 | ● ACTIVE |
| PCPrysmian Cables & Sys USA Llc/williamsport Plt | Williamsport | PA | Primary Metal Manufacturing331318 | 100-499 | ● ACTIVE |
| PZPurity Zinc Metals, LLC | Clarksville | TN | Chemical Manufacturing325180 | 20-99 | ● ACTIVE |
| PLPyromet LLC | Aston | PA | Primary Metal Manufacturing331314 | 20-99 | ● ACTIVE |
Quality Machine of Iowa Acquisition, INC. | Audubon | IA | Primary Metal Manufacturing331210 | 20-99 | ● ACTIVE |
Radcliff Wire INC | Bristol | CT | Primary Metal Manufacturing331222 | 20-99 | ● ACTIVE |
Ramco Electric Motors, INC. | Greenville | OH | Primary Metal Manufacturing331523 | 100-499 | ● ACTIVE |