| HWH W Nicholson Welding & Manufacturing INC | Apollo | PA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| HTHytech Tool & Design CO. | Edinboro | PA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| IIIgs Industries INC | Meadow Lands | PA | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| IPIngham's Powder Coating | Denver | PA | Fabricated Metal Product Manufacturing332812 | 20-99 | ◐ LIKELY ACTIVE |
| IFIntegrated Fabrication & Machine, Inc. | Greenville | PA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| ICIrvin's CORP Dba Irvin's Tinware | Mount Pleasant Mills | PA | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| JWJames W Cox & Son INC | Scranton | PA | Fabricated Metal Product Manufacturing332322 | — | ◐ LIKELY ACTIVE |
Jersey Shore Steel Fabrication | Montoursville | PA | Primary Metal Manufacturing331110 | 20-99 | ◐ LIKELY ACTIVE |
| JFJ. F. Burns Machine Co., INC. | Export | PA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| KIKane Innovations K1 | Kane | PA | Fabricated Metal Product Manufacturing332321 | 1-19 | ◐ LIKELY ACTIVE |
| KIKane Innovations K2 | Kane | PA | Fabricated Metal Product Manufacturing332323 | 20-99 | ◐ LIKELY ACTIVE |
| KFKeystone Friction Hinge Co | South Williamsport | PA | Fabricated Metal Product Manufacturing332116 | 20-99 | ◐ LIKELY ACTIVE |
| KSKinsley Steel, Inc | York | PA | Fabricated Metal Product Manufacturing332312 | 100-499 | ◐ LIKELY ACTIVE |
| KMKin-tech Mfg INC | Irwin | PA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| LMLagonda Machine INC | Washington | PA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| LMLane Metal Prod | Pulaski | PA | Fabricated Metal Product Manufacturing332996 | — | ◐ LIKELY ACTIVE |
| LFLb Foster Company - Bedford Plant | Bedford | PA | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| LHLeech Holdings, LLC | Meadville | PA | Plastics and Rubber Products Manufacturing326199 | — | ◐ LIKELY ACTIVE |
| LPLesleh Precision INC | Rostraver Township | PA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| LCLiberty Coating CO Llc/morrisville | Morrisville | PA | Fabricated Metal Product Manufacturing332812 | — | ◐ LIKELY ACTIVE |
| LCLincoln Contracting and Equipment Company, Inc. - SCA | Somerset | PA | Fabricated Metal Product Manufacturing332312 | 1-19 | ◐ LIKELY ACTIVE |
Lloyd Industries, INC. | Montgomeryville | PA | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
| MIMae-eitel, INC | Orwigsburg | PA | Fabricated Metal Product Manufacturing332999 | 20-99 | ◐ LIKELY ACTIVE |
| MMMal-ber Manufacturing CO. | Huntingdon Valley | PA | Fabricated Metal Product Manufacturing332710 | 1-19 | ◐ LIKELY ACTIVE |
| MWMaxwell Welding & Machine | Burgettstown | PA | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| MBMba Building Supplies Ne, INC. | Frackville | PA | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| MIMcgregor Ind Inc/dunmore Plt | Dunmore | PA | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| MFMeadville Forging Company - MFC | Meadville | PA | Fabricated Metal Product Manufacturing332111 | 100-499 | ◐ LIKELY ACTIVE |
| MFMetal Finishing Industries, INC. | Greensburg | PA | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| MIMetalkraft Industries INC. | Wellsboro | PA | Fabricated Metal Product Manufacturing332117 | 20-99 | ◐ LIKELY ACTIVE |
| MFM Forge Equipment LLC | Coatesville | PA | Fabricated Metal Product Manufacturing332111 | — | ◐ LIKELY ACTIVE |
| MCMgk/homer City | Homer City | PA | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| MTMicro Tool Company, INC. | Bethlehem | PA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
Midwest Hose & Specialty Inc/corry | Corry | PA | Fabricated Metal Product Manufacturing332912 | — | ◐ LIKELY ACTIVE |
| MMMillcreek Metal Finishing INC | Erie | PA | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| MLMipc LLC / Chelsea Tank Farm | Aston | PA | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| MMMkt Metal Manufacturing | York | PA | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
| MFModel Finishing Co/phila | Philadelphia | PA | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| MCMoody Corporation | Zelienople | PA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| MWMorgan's Welding, INC. | Myerstown | PA | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| MCMorris Coupling Company | Erie | PA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| NCN C Stauffer & Sons INC | Factoryville | PA | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| NWNew Way Machine Components, INC | Aston | PA | Fabricated Metal Product Manufacturing332312 | — | ▲ REPORTED CLOSED |
| NPNorth Penn Polishing & Plating INC. | Sellersville | PA | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| NMNorthwestern Mfg | Lake City | PA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| OMOCM Manufacturing LLC | King of Prussia | PA | Primary Metal Manufacturing331222 | 100-499 | ◐ LIKELY ACTIVE |
| OSOesterlings Sandblasting/butler | Butler | PA | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| OCOneills Collision | Oreland | PA | Fabricated Metal Product Manufacturing332722 | — | ◐ LIKELY ACTIVE |
| OSO'rourke & Sons, INC. | West Chester | PA | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| OOrrco | Greensburg | PA | Fabricated Metal Product Manufacturing332721 | 20-99 | ◐ LIKELY ACTIVE |