| Norris Screen And Manufacturing LLC | Tazewell | VA | $0 |
| North Alabama Fabricating Company, Inc. | Birmingham | AL | Subcontractor |
| Nucor Corporation | Brigham City | UT | Subcontractor |
| Nucor Rebar Fabrication North Carolina Inc. | Benson | NC | Subcontractor |
| Nucor Rebar Fabrication Salt Lake Inc. | Salt Lake City | UT | Subcontractor |
| Nucor Rebar Fabrication Southwest Inc. | Phoenix | AZ | Subcontractor |
| Nucor Towers & Structures Inc. | Rock Hill | SC | Subcontractor |
| Nusource, LLC | Alexandria | VA | Subcontractor |
| Oem Fabricators, Inc. | Woodville | WI | Subcontractor |
| Ogeechee Steel Inc. | Swainsboro | GA | Subcontractor |
| Omega Metalworks LLC | Colorado Springs | CO | Subcontractor |
| Pacific Safety Supply, Inc. | Salem | OR | $0 |
| Pacific Steel Group, LLC | San Diego | CA | Subcontractor |
| Par-kan Co. | Silver Lake | IN | $0 |
| PC Iron, Inc. | Spring Valley | CA | Subcontractor |
| Peachtree Protective Covers, Inc. | Lithia Springs | GA | Subcontractor |
| Phoenix Metal Products, Inc. | Fort Pierce | FL | $0 |
| Pikes Peak Steel Limited Liability Company | Colorado Springs | CO | Subcontractor |
| Plutchak Fab LLC | Menominee | MI | Subcontractor |
| Pond King Inc. | Gainesville | TX | $0 |
| Precision Iron Works, Inc. | Pacific | WA | Subcontractor |
| P & R Metals Inc. | Birmingham | AL | $0 |
| Qualico Steel Co. Inc. | Webb | AL | Subcontractor |
| Quality Stainless Products Inc. | Maryland Heights | MO | $0 |
| Quality Welding Service Inc. | Suamico | WI | $0 |
| Repairtech, L.L.C. | Franklin | VA | Subcontractor |
| Reynolds Industrial Contractors, Inc. | Minden | LA | $0 |
| RJM Industrial Supply, Inc. | Pittsboro | NC | Subcontractor |
| Rocky Mountain Steel, Inc. | Olathe | CO | Subcontractor |
| Ross Industrial LLC | Leola | PA | Subcontractor |
| Rs Welding, LLC | Pilot Point | TX | $0 |
| Ryan Manufacturing Inc. | Newark | IL | $0 |
| Safe Harbor Access Systems II, LLC | Florence | SC | $0 |
| Samuel, Son & Co. (usa) Inc. | Tucson | AZ | Subcontractor |
| San Diego Steel Solutions | Escondido | CA | Subcontractor |
| Sawyer Manufacturing Company | Tulsa | OK | $0 |
| Sh Engineering & Manufacturing LLC | Laveen | AZ | $0 |
| Shepard Steel Co. Inc. | Hartford | CT | Subcontractor |
| Sigmapac USA, Inc. | Lebanon | IN | Subcontractor |
| Singleton Steel, Inc. | Sumter | SC | Subcontractor |
| Sippel Co. Inc. | Ambridge | PA | Subcontractor |
| SMG Industrial LLC | El Paso | TX | $0 |
| Smi & Hydraulics Inc. | Porter | MN | $0 |
| Solus Group, Inc. | Saint Louis | MO | $0 |
| Sound Seal Inc. | North Aurora | IL | Subcontractor |
| Southern Industries Inc. | North Charleston | SC | $0 |
| Southern Metal Fabricators, Inc. | Albertville | AL | $0 |
| Southern Services & Equipment Inc. | Saint Bernard | LA | Subcontractor |
| South Louisiana Marine Contracting LLC | Panama City | FL | Subcontractor |
| Staar Distributing LLC | Reynoldsville | PA | Subcontractor |
| Standex International Corp. | New Berlin | WI | Subcontractor |
| Standex International Corporation | North Billerica | MA | Subcontractor |
| Steel City, Inc. | Panama City | FL | Subcontractor |
| Steel-craft Corp. Of Hartford | Hartford | WI | Subcontractor |
| Steel Fab Enterprises, Inc. | Lancaster | PA | Subcontractor |
| Steel Fab, Inc. | Arlington | WA | Subcontractor |
| Steelfab, Inc.Charlotte, NC · UEI EVZMB1757DW5 | Charlotte | NC | Subcontractor |
| Steelfab, Inc.Florence, SC · UEI KCT3HNCHAQZ1 | Florence | SC | Subcontractor |
| Steelfab Of Virginia Inc. | Raleigh | NC | Subcontractor |
| Steelfab West, Inc. | Allen | TX | Subcontractor |
| Steel Girder LLC | Dickinson | ND | Subcontractor |
| Steel Service Corporation | Flowood | MS | Subcontractor |
| Steeltech Building Products Inc. | South Windsor | CT | Subcontractor |
| Steel Tech Industrial Fabrication Inc. | Smithfield | VA | $0 |
| Stewart-amos Steel, Inc. | Harrisburg | PA | Subcontractor |
| Strait Steel Inc. | Greencastle | PA | Subcontractor |
| Streich Bros Inc. | Tacoma | WA | Subcontractor |
| Strong Forge & Fabrication, LLC | Batavia | NY | Subcontractor |
| Strong Structural Steel Ltd. | Pharr | TX | Subcontractor |
| Structures Unlimited, Inc. | Bow | NH | Subcontractor |
| Sunland Welding, Inc. | Gilbert | AZ | $0 |
| Sunsteel LLC | Vancouver | WA | Subcontractor |
| Superior Iron Works, LLC | Sterling | VA | Subcontractor |
| Superior Steel Inc. | Knoxville | TN | Subcontractor |
| Supreme Welding, Inc. | Clear Lake | SD | $0 |
| Tamra Group Inc. | Mansfield | TX | Subcontractor |
| The Ohio Bridge Corporation | Cambridge | OH | $0 |
| The Steel Network, Inc. | Raleigh | NC | $0 |
| Tiger Material Handling, Inc. | Clay Center | OH | Subcontractor |
| Tiger Steel, Inc. | Fort Collins | CO | $0 |
| Tiger Tanks, Inc. | Bakersfield | CA | $0 |
| Tm Welding & Fabrication LLC | Opelousas | LA | $0 |
| Trinity Design Group LLC | Pell City | AL | $0 |
| Tri Star Metals, Inc. | Dixon | CA | $0 |
| Tri-steel Fabricators, Inc. | Trenton | NJ | Subcontractor |
| Van Linda Iron Works Inc. | Lake Worth Beach | FL | Subcontractor |
| Venture Industrial Products, Inc. | Lees Summit | MO | Subcontractor |
| Vibrant Power Inc. | Mississauga | ON | Subcontractor |
| Wagstaff Inc. | Spokane Valley | WA | Subcontractor |
| Watford Industry, Inc. | Kingstree | SC | $0 |
| Weldway Steel Fabrication Inc. | Oakdale | CA | Subcontractor |
| Well Bilt Industries USA, LLC | Ocala | FL | Subcontractor |
| Western Slope Iron & Supply, Inc. | Grand Junction | CO | $0 |
| Western States Rebar Fabrication Inc. | Ogden | UT | Subcontractor |
| Wildcat Steel & Fabricating LLC | Hardeeville | SC | Subcontractor |
| Wilson Works Inc. | Morgantown | WV | $0 |
| Winkler's Inc. | Baltimore | MD | Subcontractor |
| Wireless Structures Consulting, Inc. | Salem | OR | Subcontractor |
| Wisconsin Metal Fab LLC | Chippewa Falls | WI | Subcontractor |
| Worldwide Communications Consultants, Inc. | Newburgh | IN | Subcontractor |
