| DBDeForest - Ball Metalpack - D148 | DeForest, WI | WI | Fabricated Metal Product Manufacturing332431 | 100-499 | ◐ LIKELY ACTIVE |
| DDelavan | Delavan | WI | Fabricated Metal Product Manufacturing332111 | 20-99 | ◐ LIKELY ACTIVE |
| DMDenco Manufacturing | New Berlin | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| DEDiscovery Energy - Saukville | Saukville | WI | Fabricated Metal Product Manufacturing332420 | 20-99 | ◐ LIKELY ACTIVE |
| DTDiversified Tooling Innovations | Racine | WI | Fabricated Metal Product Manufacturing332721 | 20-99 | ◐ LIKELY ACTIVE |
| DSDixon Sanitary | Pewaukee | WI | Fabricated Metal Product Manufacturing332919 | 20-99 | ◐ LIKELY ACTIVE |
| DMDriftless Machine LLC | Hillsboro | WI | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| DPDurex Products, Inc. - Luck Facility | Luck | WI | Fabricated Metal Product Manufacturing332618 | 20-99 | ◐ LIKELY ACTIVE |
| DIDVO, Inc. | Chilton | WI | Fabricated Metal Product Manufacturing332410 | 20-99 | ◐ LIKELY ACTIVE |
| DSDynamic Stampings, Inc | Sussex | WI | Fabricated Metal Product Manufacturing332119 | 20-99 | ◐ LIKELY ACTIVE |
| ELEarthmetals L.l.c. | Lake Mills | WI | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| ECEckmann Custom Products | Racine | WI | Fabricated Metal Product Manufacturing332119 | 1-19 | ◐ LIKELY ACTIVE |
| EFEder Flag Manufacturing Company Inc | Oak Creek | WI | Fabricated Metal Product Manufacturing332323 | 100-499 | ◐ LIKELY ACTIVE |
| EBEGA Brookfield WI | Brookfield | WI | Fabricated Metal Product Manufacturing332999 | 20-99 | ◐ LIKELY ACTIVE |
| EMEK Machine_Plant 2 | Fall River | WI | Fabricated Metal Product Manufacturing332999 | 20-99 | ◐ LIKELY ACTIVE |
| EMEK Machine_Plant 3 | Fall River | WI | Fabricated Metal Product Manufacturing332999 | 20-99 | ◐ LIKELY ACTIVE |
| EMEK Machine_Plant 4 | Madison | WI | Fabricated Metal Product Manufacturing332999 | 1-19 | ◐ LIKELY ACTIVE |
| EPEngineered Products St. Croix Falls | St.Croix Falls | WI | Fabricated Metal Product Manufacturing332994 | 20-99 | ◐ LIKELY ACTIVE |
| EMEpsi Mfg Wi | Franksville | WI | Fabricated Metal Product Manufacturing332312 | 1-19 | ◐ LIKELY ACTIVE |
| ESExpi-Door Systems Inc | Green Bay | WI | Fabricated Metal Product Manufacturing332321 | 20-99 | ◐ LIKELY ACTIVE |
| FSFabrications Shop | Green Bay | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| FRFall River Foundry - Dept.93 | Fall River | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| FCFastenal CO | Oshkosh | WI | Fabricated Metal Product Manufacturing332722 | — | ◐ LIKELY ACTIVE |
| FLFGM/Fabral LLC Marshfield | Marshfield | WI | Fabricated Metal Product Manufacturing332322 | 1-19 | ◐ LIKELY ACTIVE |
| FCFluid Connectors Chetek | Chetek | WI | Fabricated Metal Product Manufacturing332912 | 100-499 | ◐ LIKELY ACTIVE |
| FCFluid Connectors Grantsburg | Grantsburg | WI | Fabricated Metal Product Manufacturing332912 | 100-499 | ◐ LIKELY ACTIVE |
| FCFluid Connectors Manitowoc HPD | Manitowoc | WI | Fabricated Metal Product Manufacturing332912 | 100-499 | ◐ LIKELY ACTIVE |
| FCFluid Connectors Mauston | Mauston | WI | Fabricated Metal Product Manufacturing332911 | 20-99 | ◐ LIKELY ACTIVE |
| FHFranklin Hudapack Metal Treating, Inc. | Franklin | WI | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| FMFrantz Machine Products Inc. | New Berlin | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| FBFrontline Building Products | Green Bay | WI | Fabricated Metal Product Manufacturing332321 | 20-99 | ◐ LIKELY ACTIVE |
| FBFrontline Building Products Inc | Medford | WI | Fabricated Metal Product Manufacturing332321 | 20-99 | ◐ LIKELY ACTIVE |
| FMFZE Manufacturing Solutions, LLC | N. Fond du Lac | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
Gamber-Johnson LLC - Madison | Madison | WI | Fabricated Metal Product Manufacturing332999 | 1-19 | ◐ LIKELY ACTIVE |
| GMGEHC Milwaukee WI Electric Avenue HCS | West Milwaukee | WI | Fabricated Metal Product Manufacturing332721 | 500+ | ◐ LIKELY ACTIVE |
| GWGemini Welding INC. | New Richmond | WI | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| GTGeneral ThermoDynamics | Franklin | WI | Fabricated Metal Product Manufacturing332410 | 20-99 | ◐ LIKELY ACTIVE |
| GMGfs Machining INC | Peshtigo | WI | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| GMG&G Machine Inc. | Kaukauna | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| GSGKN Sinter Metals- Germantown | Germantown | WI | Fabricated Metal Product Manufacturing332117 | 20-99 | ◐ LIKELY ACTIVE |
| GRGleason Reel | Mayville | WI | Fabricated Metal Product Manufacturing332999 | 100-499 | ◐ LIKELY ACTIVE |
| GHGlenn Hepfner, Inc. | Hartford | WI | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
| GPGlobal Power Components-Burnham St | West Milwaukee | WI | Fabricated Metal Product Manufacturing332311 | 20-99 | ◐ LIKELY ACTIVE |
| GPGlobal Power Components-Chase/Oklahoma | Milwaukee | WI | Fabricated Metal Product Manufacturing332311 | 100-499 | ◐ LIKELY ACTIVE |
| GMGLV Machining, Inc. | Tigerton | WI | Fabricated Metal Product Manufacturing332710 | 1-19 | ◐ LIKELY ACTIVE |
| GWGoetsch's Welding & Machine, Inc. | Merrill | WI | Fabricated Metal Product Manufacturing332999 | 20-99 | ◐ LIKELY ACTIVE |
| GGrede | Menomonee Falls | WI | Fabricated Metal Product Manufacturing332710 | 100-499 | ◐ LIKELY ACTIVE |
| GBGreen Bay | Green Bay | WI | Fabricated Metal Product Manufacturing332813 | 100-499 | ◐ LIKELY ACTIVE |
| GBGreen Bay, WI | Green Bay | WI | Fabricated Metal Product Manufacturing332912 | 1-19 | ◐ LIKELY ACTIVE |
| GGGs Global Resources, INC | Mukwonago | WI | Fabricated Metal Product Manufacturing332912 | — | ◐ LIKELY ACTIVE |