| FWFort Wayne Foundry-lima Road Division | Fort Wayne | IN | — | ◇ UNVERIFIED |
| FWFort Wayne Foundry-pontiac Division | Fort Wayne | IN | — | ◇ UNVERIFIED |
| FBFranklin Bronze & Alloy CO | Franklin | PA | — | ◇ UNVERIFIED |
| FPFresno Pipe & Supply, INC | Fresno | CA | — | ◇ UNVERIFIED |
| FAFrostad Atelier Foundry | Sacramento | CA | — | ◇ UNVERIFIED |
| FPFunify Planet LLC | Oakland | IA | — | ◇ UNVERIFIED |
| FRFw Roberts Manufacturing CO | Lockport | NY | — | ◇ UNVERIFIED |
| GCGamco Components Group (former) | Cedarburg | WI | — | ◇ UNVERIFIED |
| GLGarrett, LLC | Amber | OK | — | ◇ UNVERIFIED |
| GOGasser Olds CO INC | Vernon | CA | — | ◇ UNVERIFIED |
| GIGc Int'l INC Dba Al Johnson CO. | Camarillo | CA | — | ◇ UNVERIFIED |
| GCGe Core Company | Cudahy | CA | — | ◇ UNVERIFIED |
| GMGeneral Machine and Foundry | Wilton | NH | — | ◇ UNVERIFIED |
| GUGeneral Underground Fire Protection INC | Orange | CA | — | ◇ UNVERIFIED |
| GOGe Oil & Gas | New Braunfels | TX | — | ◇ UNVERIFIED |
| GMGeorge Meade Foundry | Bedford | MA | — | ◇ UNVERIFIED |
| GWGeorge Wilson | Danville | IL | — | ◇ UNVERIFIED |
| GSGet Scrapped Com LLC | Morganville | NJ | — | ◇ UNVERIFIED |
| GWG&g Workshop | Independence | MO | — | ◇ UNVERIFIED |
| GIGheen Irrigation Works INC | Harrisburg | OR | — | ◇ UNVERIFIED |
| GMG M Brass & Aluminum Foundry CORP | Benton Harbor | MI | — | ◇ UNVERIFIED |
| GPGm Powertrain - Massena Plant | Massena | NY | — | ◇ UNVERIFIED |
| GLGm-smco Landfill | Saginaw | MI | — | ◇ UNVERIFIED |
| GIGpt Industries | Wheat Ridge | CO | — | ◇ UNVERIFIED |
| GFGranit-bronz Foundry | Cold Spring | MN | — | ◇ UNVERIFIED |
| GPGs Precision - Laconia Division | Laconia | NH | — | ◇ UNVERIFIED |
| GAGyalog Aluminum Foundry LLC | Canton | OH | — | ◇ UNVERIFIED |
| HBHagerty Brothers Company | Peoria | IL | — | ◇ UNVERIFIED |
| HCHamlin Casting CORP. | Pilot Mountain | NC | — | ◇ UNVERIFIED |
| HMHarder Mechanical Fabrication Pipe Shop | Milwaukie | OR | — | ◇ UNVERIFIED |
| HIHarvey Industries Die Casting LLC | Aiken | SC | — | ◇ UNVERIFIED |
| HFHauser Foundry | Shreveport | LA | — | ◇ UNVERIFIED |
| HAHawkins Alum.foundry Dba Vernon Machine & Foundry | Santa Ana | CA | — | ◇ UNVERIFIED |
| HAHawver Aluminum Foundry, INC | Tampa | FL | — | ◇ UNVERIFIED |
| HPHbp Pressure Pipe INC | Bakewell | TN | — | ◇ UNVERIFIED |
| HSHd Supply Water Works LTD 7833 | Lodi | CA | — | ◇ UNVERIFIED |
| HFHebert Foundry & Machine | Laconia | NH | — | ◇ UNVERIFIED |
| HMHedman Manufacturing, INC | Whittier | CA | — | ◇ UNVERIFIED |
| HAHeritage Aluminum and Brass | Valders | WI | — | ◇ UNVERIFIED |
| HAHeritage Aluminum and Brass Foundry | Saint Nazianz | WI | — | ◇ UNVERIFIED |
| HIHesse Industrial Sales INC. Dba Texas Manufacturin | Houston | TX | — | ◇ UNVERIFIED |
| HIHitchcock Industries INC Dba Consol Precision Prod | Minneapolis | MN | — | ◇ UNVERIFIED |
| HIHitchcock Industries INC Dba Cpp - Pattern Shop | Minneapolis | MN | — | ◇ UNVERIFIED |
| HKHowco Kiefer | Kiefer | OK | — | ◇ UNVERIFIED |
 Howco Metals Management, LLC | Gray | LA | — | ◇ UNVERIFIED |
| HAHowmet Aluminum Castings | Del Rio | TX | — | ◇ UNVERIFIED |
| HCHowmet Casting & Services, INC. | Wichita Falls | TX | — | ◇ UNVERIFIED |
| HIHtb INC | Hayward | CA | — | ◇ UNVERIFIED |
| HVHuron Valley Steel CORP | Belleville | MI | — | ◇ UNVERIFIED |
| HFHydraulic Fittings, INC. | Racine | WI | — | ◇ UNVERIFIED |
| IEIbc Emc | Wilmington | MA | — | ◇ UNVERIFIED |
| IIIFAB Industrial, LLC | Shreveport | LA | — | ◇ UNVERIFIED |
| IIIlco Industries | Rancho Dominguez | CA | — | ◇ UNVERIFIED |
| ICImperial Cleaners & Tailors/washington | Washington | PA | — | ◇ UNVERIFIED |
| IMImperial Manufacturing Group USA INC. | Alton | IL | — | ◇ UNVERIFIED |
| IMIndiana Metal Craft Incorporated | Bloomington | IN | — | ◇ UNVERIFIED |
| IFIndustrial Fabrication Services, LLC | Sand Springs | OK | — | ◇ UNVERIFIED |
| IFIndustrial Foundry | Uxbridge | MA | — | ◇ UNVERIFIED |
| IPIndustrial Pipe Fittings LLC Dba Plasson USA | Corsicana | TX | — | ◇ UNVERIFIED |
| IPIndustrial Piping Corporation | Staunton | VA | — | ◇ UNVERIFIED |
| IPIndustrial Piping Corporation | Staunton | VA | — | ◇ UNVERIFIED |
| IPIndustrial Piping INC | Pineville | NC | — | ◇ UNVERIFIED |
| ITIndustrial Tube Components, Inc | Lizton | IN | — | ◇ UNVERIFIED |
| IMInnovative Metal Designs INC | Westminster | CA | — | ◇ UNVERIFIED |
| ITInsituform Technology | Wrentham | MA | — | ◇ UNVERIFIED |
| IMInterstate Metals | Fort Morgan | CO | — | ◇ UNVERIFIED |
| ILInt'l Light Metals Corporation | Los Angeles | CA | — | ◇ UNVERIFIED |
| IPIpp-improved Piping Products, INC. | San Antonio | TX | — | ◇ UNVERIFIED |
| IBIpsco Baytown Works | Baytown | TX | — | ◇ UNVERIFIED |
| ICIsla Carmen LLC | Vancouver | WA | — | ◇ UNVERIFIED |
| IIIsland Industries, INC. | Memphis | TN | — | ◇ UNVERIFIED |
| JRJAD Repair Services LLC | Cincinnati | OH | — | ◇ UNVERIFIED |
| JCJaytec Chelsea LLC Plt 9 | Chelsea | MI | — | ◇ UNVERIFIED |
| JWJerry's Welding INC. | Elgin | IL | — | ◇ UNVERIFIED |
| JPJet Pipe Industries CO. | Phoenix | AZ | — | ◇ UNVERIFIED |
| JSJet Specialty Dba Jet Fabrication | Corpus Christi | TX | — | ◇ UNVERIFIED |
| JGJ G Specialty Welding LLC | Gilltte | WY | — | ◇ UNVERIFIED |
| JCJim Calcagno | Boring | OR | — | ◇ UNVERIFIED |
| JSJim Stewart Mobile Phones | Indianapolis | IN | — | ◇ UNVERIFIED |
| JBJjj Brass & Aluminum Foundry, LLC | South Beloit | IL | — | ◇ UNVERIFIED |
| JIJms INC. | Bozeman | MT | — | ◇ UNVERIFIED |
| JWJoe W. Morgan, INC. | Evansville | IN | — | ◇ UNVERIFIED |
| JAJohnson Aluminum Foundry | Cerritos | CA | — | ◇ UNVERIFIED |
| JEJones Enterprises Twelve 23, LLC | Cumming | GA | — | ◇ UNVERIFIED |
| JUJpf Ultrasonic Technologies, INC. | Houston | TX | — | ◇ UNVERIFIED |
| JAJudson A. Smith Company | Boyertown | PA | — | ◇ UNVERIFIED |
| KAKaiser Aluminum & Chemical CORP Casting Ops | Canton | OH | — | ◇ UNVERIFIED |
| KAKb Alloys LLC | Robards | KY | — | ◇ UNVERIFIED |
| KPKearney Pattern Works and Foundry, INC | San Jose | CA | — | ◇ UNVERIFIED |
| KMKearneys' Metals, Inc., Dba Kmi Dba Kearneys' Dba | Fresno | CA | — | ◇ UNVERIFIED |
| KMKelco Metals INC | Mount Pleasant | SC | — | ◇ UNVERIFIED |
| KMKellerman Manufacturing Company INC. | Wauconda | IL | — | ◇ UNVERIFIED |
| KMKen Miller Supply of West Virginia, INC | Marietta | OH | — | ◇ UNVERIFIED |
| KSKff Supply, INC. | Centralia | IL | — | ◇ UNVERIFIED |
| KFKidde Fire Fighting | Ranson | WV | — | ◇ UNVERIFIED |
 Kinetic Systems, INC. | Frederick | MD | — | ◇ UNVERIFIED |
| KMKing Model Company INC (1677011225) | Akron | OH | — | ◇ UNVERIFIED |
| KKK & K Supply | Lubbock | TX | — | ◇ UNVERIFIED |
| KFKloppenborg Foundry & Fan CO | Davenport | IA | — | ◇ UNVERIFIED |
| KFKvk Foundry INC | Millington | IL | — | ◇ UNVERIFIED |
