| HAHanel - A Division of Driv-Lok, Inc. | New Berlin | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| HFHartford Finishing Inc. East | Hartford | WI | Fabricated Metal Product Manufacturing332812 | 20-99 | ◐ LIKELY ACTIVE |
| HPHB Powersports Group, Inc. | Saukville | WI | Fabricated Metal Product Manufacturing332710 | 1-19 | ◐ LIKELY ACTIVE |
| HPHearing Protection LLC | Watertown | WI | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| HRHenry Repeating Arms - Ladysmith | Ladysmith | WI | Fabricated Metal Product Manufacturing332994 | 100-499 | ◐ LIKELY ACTIVE |
| HRHenry Repeating Arms - Rice Lake | Rice Lake | WI | Fabricated Metal Product Manufacturing332994 | 100-499 | ◐ LIKELY ACTIVE |
| HUHermle Usa, INC | Franklin | WI | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| HEH. Ertel, INC. | Racine | WI | Fabricated Metal Product Manufacturing332911 | — | ▲ REPORTED CLOSED |
| HCHighview Custom Fabricating | Oneida | WI | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| HSHSM Sheboygan / Spiller Springs (651) | Sheboygan | WI | Fabricated Metal Product Manufacturing332613 | 20-99 | ◐ LIKELY ACTIVE |
| HHudson | Hudson | WI | Fabricated Metal Product Manufacturing332510 | 20-99 | ◐ LIKELY ACTIVE |
| HMHUI Manufacturing | Kiel | WI | Fabricated Metal Product Manufacturing332322 | 100-499 | ◐ LIKELY ACTIVE |
| HGHultafors Group North America (Mequon) | Mequon | WI | Fabricated Metal Product Manufacturing332216 | 20-99 | ◐ LIKELY ACTIVE |
| HGHultafors Group North America (Richfield) | Richfield | WI | Fabricated Metal Product Manufacturing332216 | 20-99 | ◐ LIKELY ACTIVE |
| HIHydra-Seal, Inc. | Menomonee Falls | WI | Fabricated Metal Product Manufacturing332999 | 20-99 | ◐ LIKELY ACTIVE |
| HIHyPro Inc. Jefferson (JF) | Waterford | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| HIHyPro Inc. Platteville (PT) | Platteville | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| IIIKS Industries, Inc. | Park Falls | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| IHInduction Heat Treating Waukesha Corp. | Waukesha | WI | Fabricated Metal Product Manufacturing332811 | 1-19 | ◐ LIKELY ACTIVE |
Infinity Edm, LLC | Jackson | WI | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| ICIntelligent Composites LLC | Milwaukee | WI | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| INIVI North, Inc. | Greenville | WI | Fabricated Metal Product Manufacturing332322 | 100-499 | ◐ LIKELY ACTIVE |
| JIJBL International DBA Paget Equipment Company | Marsfhield | WI | Fabricated Metal Product Manufacturing332420 | 20-99 | ◐ LIKELY ACTIVE |
| JMJensen Metal Products | Racine | WI | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
| JMJ&J Machine llc | Appleton | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| JCJor-Mac Company | Oshkosh | WI | Fabricated Metal Product Manufacturing332999 | 100-499 | ◐ LIKELY ACTIVE |
| KMKelsch Machine Corporation | Belleville | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| KKenosha | Kenosha | WI | Fabricated Metal Product Manufacturing332322 | 100-499 | ◐ LIKELY ACTIVE |
| KLKingspan Light and Air Fenestration - Wausau | Wausau | WI | Fabricated Metal Product Manufacturing332321 | 20-99 | ◐ LIKELY ACTIVE |
| KMKoziol Manufacturing LLC | Milwaukee | WI | Fabricated Metal Product Manufacturing332721 | — | ◐ LIKELY ACTIVE |
| KSK & S Enterprises, LLC | Balsam Lake | WI | Fabricated Metal Product Manufacturing332812 | — | ◐ LIKELY ACTIVE |
| LMLange Machine & Tool CO LLC | Merrill | WI | Fabricated Metal Product Manufacturing332710 | 1-19 | ◐ LIKELY ACTIVE |
| LJLawrence J Giesfeldt | Harshaw | WI | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| LPLee Precision, Inc. | Hartford | WI | Fabricated Metal Product Manufacturing332216 | 20-99 | ◐ LIKELY ACTIVE |
| LSLejeune Steel - Barronett | Barronett | WI | Fabricated Metal Product Manufacturing332312 | 100-499 | ◐ LIKELY ACTIVE |
| MSM2M Synergy, LLC | Mukwonago | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| MSMachine Shop | De Pere | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| MCMachining Concepts LLC | Germantown | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| MFMartin Fiala | Salem | WI | Fabricated Metal Product Manufacturing332812 | — | ◐ LIKELY ACTIVE |
| MSMatthew Scott Sammons | Park Falls | WI | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| MIMatzel Industries INC | Milwaukee | WI | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| MIMCL Industries- Metal Fab Division | Pulaski | WI | Fabricated Metal Product Manufacturing332313 | 20-99 | ◐ LIKELY ACTIVE |
| MBMEC - Beaver Dam East | Beaver Dam | WI | Fabricated Metal Product Manufacturing332812 | 20-99 | ◐ LIKELY ACTIVE |
| MBMEC - Beaver Dam West | Beaver Dam | WI | Fabricated Metal Product Manufacturing332812 | 100-499 | ◐ LIKELY ACTIVE |
| MMMEC - Mayville South | Mayville | WI | Fabricated Metal Product Manufacturing332999 | 100-499 | ◐ LIKELY ACTIVE |
| MNMEC - Neillsville | Neillsville | WI | Fabricated Metal Product Manufacturing332999 | 100-499 | ◐ LIKELY ACTIVE |
| MFMenomonee Falls Location | Menomonee Falls | WI | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| MMerrill | Merrill | WI | Fabricated Metal Product Manufacturing332321 | 20-99 | ◐ LIKELY ACTIVE |
| MEMerrill Equipment Company | Merrill | WI | Fabricated Metal Product Manufacturing332323 | 20-99 | ◐ LIKELY ACTIVE |
| MFMerrill Fabrication | Merrill | WI | Fabricated Metal Product Manufacturing332999 | 20-99 | ◐ LIKELY ACTIVE |