| DMDhl Machine & Tool (division of Derbyshire Machine & Tool) | Quakertown | 1–19 | ◐ LIKELY ACTIVE |
| DMDl Metal Design LLC | Quakertown | — | ▲ REPORTED CLOSED |
| EIEmp Industries, INC. | Warminster | — | ◐ LIKELY ACTIVE |
| EAEmpire Abrasive Equipment CO | Langhorne | 100–499 | ◐ LIKELY ACTIVE |
| ETExact Tolerance LLC | Bristol | — | ▲ REPORTED CLOSED |
| IQInteger, QKP | Quakertown | 100–499 | ◐ LIKELY ACTIVE |
| JPJohn Prosock Machine Inc | Quakertown | 20–99 | ◐ LIKELY ACTIVE |
| KMKings Mobile Mechanics | Langhorne | — | ◐ LIKELY ACTIVE |
| KSKlover SEPA Inc. (Prefab Division) | Quakertown | 20–99 | ◐ LIKELY ACTIVE |
| LULevelled Up Management LLC | Washington Crossing | — | ◐ LIKELY ACTIVE |
| LCLiberty Coating Company LLC | Morrisville | 20–99 | ◐ LIKELY ACTIVE |
| PTPressure Technology INC | Warminster | — | ◐ LIKELY ACTIVE |
| RSRailway Specialties CORP | Croydon | — | ◐ LIKELY ACTIVE |
| SASolar Atmospheres of Western Pennsylvania, INC | Souderton | — | ◐ LIKELY ACTIVE |
| STSPS Technologies | Langhorne | 100–499 | ◐ LIKELY ACTIVE |
| SSSyncom Specialties, INC. | Churchville | — | ▲ REPORTED CLOSED |
| TTTohickon Tool & Die CO | Doylestown | — | ◐ LIKELY ACTIVE |
| WMWarren Machine Technology INC | Warrington | — | ◐ LIKELY ACTIVE |
| AAA & a Manufacture | Southampton | — | ◇ UNVERIFIED |
| CMCentral Machine Co., INC. | Quakertown | — | ◇ UNVERIFIED |
| ABAmerican Bar Products, INC. | Warminster | — | ◇ UNVERIFIED |
| AMArtcraft Machine & Tool CORP. | Langhorne | — | ◇ UNVERIFIED |
| BIBensalem Ii Enterprises | Bensalem | — | ◇ UNVERIFIED |
| BBBerger Building Products, INC. | Ivyland | — | ◇ UNVERIFIED |
| BTBiggs Tool & Die, INC | Warminster | — | ◇ UNVERIFIED |
| BPBless Precision Tool, INC. | Quakertown | — | ◇ UNVERIFIED |
| BPBonehead Performance, Inc. | Feasterville Trevose | — | ◇ UNVERIFIED |
| CICdf Industries | Quakertown | — | ◇ UNVERIFIED |
| CCCompression Components and Services, LLC | Warrington | — | ◇ UNVERIFIED |
| CMCoren Metal Crafts, CO. | Bensalem | — | ◇ UNVERIFIED |
| CACreative Architectural Metals INC | Bensalem | — | ◇ UNVERIFIED |
| CLCvx LLC | Telford | — | ◇ UNVERIFIED |
| DMDigital Machine Co., INC. | Warminster | — | ◇ UNVERIFIED |
| EMEkl Machine, INC. | Bensalem | — | ◇ UNVERIFIED |
| ECElectroline CORP | Pipersville | — | ◇ UNVERIFIED |
| ETErnst Timing Screw CO. | Bensalem | — | ◇ UNVERIFIED |
| EGEvolution Gun Works, LLC | Quakertown | — | ◇ UNVERIFIED |
| GMGMA Manufacturing Inc. | Huntingdon Valley | — | ◇ UNVERIFIED |
| GPGuidemark Precision Machine, Inc. | Quakertown | — | ◇ UNVERIFIED |
| HMHardy Manufacturing, INC | Doylestown | — | ◇ UNVERIFIED |
| HMHart Mechanical & Electrical Contractors, INC | Perkasie | — | ◇ UNVERIFIED |
| HMHussey Marine Alloys | Bensalem | — | ◇ UNVERIFIED |
| HIHypex INC. | Southampton | — | ◇ UNVERIFIED |
| IFInnovative Finishers, INC. | Telford | — | ◇ UNVERIFIED |
| ILInstaspace, LLC | Chalfont | — | ◇ UNVERIFIED |
| MMMartelli's Metal Fabrication INC | Ivyland | — | ◇ UNVERIFIED |
| MPMatt Pane Tools LLC | Holland | — | ◇ UNVERIFIED |
 Max Machining, LLC | Perkasie | — | ◇ UNVERIFIED |
| MOMen of Steel Enterprises, LLC | Bensalem | — | ◇ UNVERIFIED |
| MAMetal Alliance Inc | Huntingdon Valley | — | ◇ UNVERIFIED |
