| FMFabricated Metal Solutions Inc | Medfield | MA | — | ◇ UNVERIFIED |
| FPFabricated Products of Tampa, INC. | Tampa | FL | — | ◇ UNVERIFIED |
| FAFabricating Arts | Swannanoa | NC | — | ◇ UNVERIFIED |
| FAFabrication Associates, Inc. | Charlotte | NC | — | ◇ UNVERIFIED |
| FSFabrication Shop | Topeka | KS | — | ◇ UNVERIFIED |
| FIFabrico INC. | Tulsa | OK | — | ◇ UNVERIFIED |
| FIFabricraft INC | Bristol | TN | — | ◇ UNVERIFIED |
| FCFabristeel Corporation | Greensboro | NC | — | ◇ UNVERIFIED |
| FIFab-rite, INC. | La Vista | NE | — | ◇ UNVERIFIED |
| FMFab-tech Machining, LLC | Millville | UT | — | ◇ UNVERIFIED |
| FTFab Tech Manufacturing INC | Redmond | OR | — | ◇ UNVERIFIED |
| FTFab Tech Manufacturing INC | Prineville | OR | — | ◇ UNVERIFIED |
| FMFabtek Manufacturing, INC. | Tulsa | OK | — | ◇ UNVERIFIED |
| FCFabtron Corporation | Auburn | IN | — | ◇ UNVERIFIED |
| FMFabwest Manufacturing | Temecula | CA | — | ◇ UNVERIFIED |
| FFFab-worx Fabricators, LLC | Port Allen | LA | — | ◇ UNVERIFIED |
| FWFab Worx INC a California Corporation | Santa Rosa | CA | — | ◇ UNVERIFIED |
| FCFactory Company International INC the | Spokane | WA | — | ◇ UNVERIFIED |
| FFF.a.f.o. Fabrication, LLC | Richmond | VA | — | ◇ UNVERIFIED |
| FSFairfield Steel Works LLC | Shelton | CT | — | ◇ UNVERIFIED |
| FIFairlead Integrated | Portsmouth | VA | — | ◇ UNVERIFIED |
| FPFairlead Precision Manufacturing & Integration | Portsmouth | VA | — | ◇ UNVERIFIED |
| FSFairmont Service Center | Fairmont | WV | — | ◇ UNVERIFIED |
| FBFairway Bldg Products LLC | Hamilton Twp | NJ | — | ◇ UNVERIFIED |
| FSFalcon Steel Company | Fort Worth | TX | — | ◇ UNVERIFIED |
| FMFannco Metal Buildings & Components | Clovis | CA | — | ◇ UNVERIFIED |
| FGFarmers Gate INC | Campbellsville | KY | — | ◇ UNVERIFIED |
| FAFarr Apc | Jonesboro | AR | — | ◇ UNVERIFIED |
| FSFarwest Steel Post Tensioning Company | Portland | OR | — | ◇ UNVERIFIED |
| FFFast Fence of Texas, CORP. | Cypress | TX | — | ◇ UNVERIFIED |
| FLFast Lane Processing & Fabrication LLC | Milliken | CO | — | ◇ UNVERIFIED |
| FTFast Truss Connection | Miami | FL | — | ◇ UNVERIFIED |
| FAFathom and Form, LLC | Los Angeles | CA | — | ◇ UNVERIFIED |
| FIFcf INC | Shreveport | LA | — | ◇ UNVERIFIED |
| FCF & C Professional Aluminum Railing CORP. | Plainfield | NJ | — | ◇ UNVERIFIED |
| FLFe26 LLC | Gastonia | NC | — | ◇ UNVERIFIED |
| FMFederal Metals, INC | Tulsa | OK | — | ◇ UNVERIFIED |
| FSFederal Steel & Erection CO | East Alton | IL | — | ◇ UNVERIFIED |
| FWFeese Welding & Iron | Liberal | KS | — | ◇ UNVERIFIED |
| FIFehrs Industrial Manufacturing INC. | Seminole | TX | — | ◇ UNVERIFIED |
| FMFence Menders | Santa Ana | CA | — | ◇ UNVERIFIED |
| FMFence Menders INC | Santa Ana | CA | — | ◇ UNVERIFIED |
| FPFence Pros | Santa Ana | CA | — | ◇ UNVERIFIED |
| FFFenceTrac Fence Systems, Inc. | Jenks | OK | — | ◇ UNVERIFIED |
| FSFenix Storefront & Signs LLC | Corona | NY | — | ◇ UNVERIFIED |
| FFFerguson Fabrication LLC | Merlin | OR | — | ◇ UNVERIFIED |
| FIFerrofab INC. | Hamlet | NC | — | ◇ UNVERIFIED |
| FIFerro Iron Products | Orange | CA | — | ◇ UNVERIFIED |
| FMFF Manufacturing Incorporated | Albany | OR | — | ◇ UNVERIFIED |
 Fiba Technologies INC | Millbury | MA | — | ◇ UNVERIFIED |
| Fiba Technologies INC | Louisville | KY | — | ◇ UNVERIFIED |
| FLFibracan, LLC | Tucson | AZ | — | ◇ UNVERIFIED |
| FWFielders Welding and Ornamental | Oxford | MS | — | ◇ UNVERIFIED |
| FMFife Metal Fabricating INC | Redding | CA | — | ◇ UNVERIFIED |
| FHFine Home Details, INC. | Providence | RI | — | ◇ UNVERIFIED |
| FFFine-Line Fabrications, LLC | Oostburg | WI | — | ◇ UNVERIFIED |
| FFFine-Line Fabrications, LLC | Oostburg | WI | — | ◇ UNVERIFIED |
| FFFine-Line Fabrications, LLC | Oostburg | WI | — | ◇ UNVERIFIED |
| FLFinish Line Powder Coating | Yakima | WA | — | ◇ UNVERIFIED |
| FSFinkles Studio | Rockport | TX | — | ◇ UNVERIFIED |
| FSFino's Screen & Aluminum Company | Port Saint Lucie | FL | — | ◇ UNVERIFIED |
| FIFin-x, INC | Owasso | OK | — | ◇ UNVERIFIED |
| FFFireball Fab and Metal Sales LLC | Little Canada | MN | — | ◇ UNVERIFIED |
 Fireblast Global INC Dba Fireblast 451 INC | Murrieta | CA | — | ◇ UNVERIFIED |
| FFFireside Fabrication LLC | Thomson | GA | — | ◇ UNVERIFIED |
| FRFirst Rate Industries, LTD | Saint Marys | OH | — | ◇ UNVERIFIED |
| FSFirst Source Fabricating, Inc. | Cincinnati | OH | — | ◇ UNVERIFIED |
| FSFischer Steel CORP | Memphis | TN | — | ◇ UNVERIFIED |
| FLFisher & Ludlow INC | Litchfield | IL | — | ◇ UNVERIFIED |
| FLFisher & Ludlow Inc/saegertown | Saegertown | PA | — | ◇ UNVERIFIED |
| FMFisher Metal Products INC | Visalia | CA | — | ◇ UNVERIFIED |
| FMFixture Manufacturing Corp-winner Road | Kansas City | MO | — | ◇ UNVERIFIED |
| FFF-k Fab Group, LLC | Belle Chasse | LA | — | ◇ UNVERIFIED |
| FIFlaherty Iron Works, INC. | Alexandria | VA | — | ◇ UNVERIFIED |
| FOFlannery of California | San Fernando | CA | — | ◇ UNVERIFIED |
| FBFlashing By Design, Inc | North Branch | MN | — | ◇ UNVERIFIED |
| FIFlexcon Industries | Randolph | MA | — | ◇ UNVERIFIED |
| FLFlexible Lifeline Systems, INC. | Chopin | LA | — | ◇ UNVERIFIED |
| FLF L Heughes & CO INC | Rochester | NY | — | ◇ UNVERIFIED |
| FIFloe International INC | Mcgregor | MN | — | ◇ UNVERIFIED |
| FIFloe International INC - East Building | Mcgregor | MN | — | ◇ UNVERIFIED |
| FMFlorida Metal Craft, INC. | Winter Garden | FL | — | ◇ UNVERIFIED |
| FMFlorida Metal Products | Jacksonville | FL | — | ◇ UNVERIFIED |
| FSFlotation Systems, INC. | Cullman | AL | — | ◇ UNVERIFIED |
| FDFluid Design Products INC | Spokane | WA | — | ◇ UNVERIFIED |
| FMFluid Marine LLC | Auburn | WA | — | ◇ UNVERIFIED |
| FCFlux Concepts LLC | Philadelphia | PA | — | ◇ UNVERIFIED |
| FDFlux Design LLC | Portland | OR | — | ◇ UNVERIFIED |
| FWFlying W, INC. | Watonga | OK | — | ◇ UNVERIFIED |
| FLFmc2 LLC | Howell Township | NJ | — | ◇ UNVERIFIED |
| FMF & M Steel Fabricators INC | Vallejo | CA | — | ◇ UNVERIFIED |
| FSFmt Shipyard & Repair LLC - Universal Services & Associates | Belle Chasse | LA | — | ◇ UNVERIFIED |
| FMF&o Metal Services LLP | Reno | NV | — | ◇ UNVERIFIED |
| FFord-gelatt | Baton Rouge | LA | — | ◇ UNVERIFIED |
| FCForerunner Creations | Brooklyn | NY | — | ◇ UNVERIFIED |
| FOFormed Objects INC | Portland | OR | — | ◇ UNVERIFIED |
| FCFormer Chicago Musical Instruments-remediation Site | Fullerton | CA | — | ◇ UNVERIFIED |
| FMFormer Mrp LLC ( Bldg-2 ( Njdep Isra Case# 20160039)) | South Plainfield | NJ | — | ◇ UNVERIFIED |
| FAForms and Surfaces | Carpinteria | CA | — | ◇ UNVERIFIED |
| FAForms and Surfaces, INC. | Carpinteria | CA | — | ◇ UNVERIFIED |
