| NGNGM Glass Metals, LLC | Woodbridge | VA | — | ◇ UNVERIFIED |
| NFNiagara Frontier Custom Fabrication, INC. | Buffalo | NY | — | ◇ UNVERIFIED |
| NPNichols Propeller Company | Greenville | MS | — | ◇ UNVERIFIED |
| NMNick's Metal Fabricating & Sons, INC. | Chicago | IL | — | ◇ UNVERIFIED |
| NWNiermann Weeks Company, INC | Millersville | MD | — | ◇ UNVERIFIED |
| NMNix Metals Fabrication Building Expansion | Poseyville | IN | — | ◇ UNVERIFIED |
| NJN J Mccutchen INC | Stockton | CA | — | ◇ UNVERIFIED |
| NCNooter Corporation | Saint Louis | MO | — | ◇ UNVERIFIED |
 North Alabama Fabricating Company, INC. | Glen Allen | AL | — | ◇ UNVERIFIED |
| North Alabama Fabricating Company, INC. | Cullman | AL | — | ◇ UNVERIFIED |
| NCNorth Chicago Iron Works, INC. | North Chicago | IL | — | ◇ UNVERIFIED |
| NCNorth Coast Tool, INC. | Erie | PA | — | ◇ UNVERIFIED |
| NSNortheast Sheet Metal LLC | Hoboken | NJ | — | ◇ UNVERIFIED |
| NCNorthern California Framing & Carpentry, INC. | Ripon | CA | — | ◇ UNVERIFIED |
| NMNorthern Metal Fab INC | Baldwin | WI | — | ◇ UNVERIFIED |
| NONorthern Oregon Fabrication LLC | North Plains | OR | — | ◇ UNVERIFIED |
| NSNorthern Screw Machine Company INC | Saint Paul | MN | — | ◇ UNVERIFIED |
 Northland Machine INC | Cohasset | MN | — | ◇ UNVERIFIED |
| NSNorth Second Street Smithfield LLC Dba Con-quip | Burlington | KY | — | ◇ UNVERIFIED |
| NSNorth Shore Steel Co., INC. | Lynn | MA | — | ◇ UNVERIFIED |
| NSNorthshore Steel INC | Two Harbors | MN | — | ◇ UNVERIFIED |
| NSNorth Star Fabricators, INC. | Pocatello | ID | — | ◇ UNVERIFIED |
| NTNorth Texas Steel | Fort Worth | TX | — | ◇ UNVERIFIED |
| NANorthwest Aluminum Trailers INC | Roseburg | OR | — | ◇ UNVERIFIED |
| NSNorthwest Steel Fab INC Deer Park | Deer Park | WA | — | ◇ UNVERIFIED |
| NSNorthwest Structural Services INC | Portland | OR | — | ◇ UNVERIFIED |
| NSNorthwest Structural Services INC | Portland | OR | — | ◇ UNVERIFIED |
| NSNorthwest Structural Services INC | Portland | OR | — | ◇ UNVERIFIED |
| NTNorthwest Thermal Systems INC | Estacada | OR | — | ◇ UNVERIFIED |
| NPNovel Precision Machine LLC | Lyndon | KY | — | ◇ UNVERIFIED |
| NSNowlin Steelcraft, INC. | Hampton | VA | — | ◇ UNVERIFIED |
| NNucor | Norfolk | NE | — | ◇ UNVERIFIED |
| NHNucor Harris Rebar Jackson LLC | Flowood | MS | — | ◇ UNVERIFIED |
| NHNucor Harris Rebar - Zellwood | Zellwood | FL | — | ◇ UNVERIFIED |
| NRNucor Rebar Fabrication Northeast LLC | Pawtucket | RI | — | ◇ UNVERIFIED |
| NRNucor Rebar Fabrication Southwest INC | Lathrop | CA | — | ◇ UNVERIFIED |
| NSNucor Skyline | Armorel | AR | — | ◇ UNVERIFIED |
| NTNucor Towers and Structures | New Ross | IN | — | ◇ UNVERIFIED |
| NTNucor Towers & Structures | Crawfordsville | IN | — | ◇ UNVERIFIED |
| NVNucor Vulcraft Group | San Antonio | TX | — | ◇ UNVERIFIED |
| NVNucor Vulcraft - St. Joe Division | Saint Joe | IN | — | ◇ UNVERIFIED |
| NSNuEra Steel LLC | Viborg | SD | — | ◇ UNVERIFIED |
| NCNueva Castilla Iron Works, INC. | San Francisco | CA | — | ◇ UNVERIFIED |
| NRNufab Rebar-slidell, LLC | Alexandria | LA | — | ◇ UNVERIFIED |
| NNNumber Nine, L.l.c. | Lk Havasu Cty | AZ | — | ◇ UNVERIFIED |
| NFNusteel Fabricators, INC. | Childersburg | AL | — | ◇ UNVERIFIED |
| NSNWA Steel Co LLC | Siloam Springs | AR | — | ◇ UNVERIFIED |
| OIOakdale Iron Works, INC. | Oakdale | PA | — | ◇ UNVERIFIED |
| OFOberlin Filter Company | Pewaukee | WI | — | ◇ UNVERIFIED |
| OCObie Construction, INC. | Eugene | OR | — | ◇ UNVERIFIED |
