| MFMacLean Fogg Component Solutions Saegertown | Saegertown | PA | Transportation Equipment Manufacturing336350 | 100-499 | ◐ LIKELY ACTIVE |
| MMeppi110-116 | Freedom | PA | Transportation Equipment Manufacturing336510 | 100-499 | ◐ LIKELY ACTIVE |
| MCMilitary & Commercial Fabricators, INC | Avoca | PA | Transportation Equipment Manufacturing336413 | — | ◐ LIKELY ACTIVE |
| MSMil Spec Connect LLC | Southampton | PA | Transportation Equipment Manufacturing336413 | — | ◐ LIKELY ACTIVE |
| MTMorgan Truck Body LLC mpe | Ephrata | PA | Transportation Equipment Manufacturing336211 | 20-99 | ◐ LIKELY ACTIVE |
| NLNovae LLC | Waynesboro | PA | Transportation Equipment Manufacturing336212 | 20-99 | ◐ LIKELY ACTIVE |
| NLNovae LLC | Carbondale | PA | Transportation Equipment Manufacturing336212 | 20-99 | ◐ LIKELY ACTIVE |
| PPa | York | PA | Transportation Equipment Manufacturing336212 | 20-99 | ◐ LIKELY ACTIVE |
| PAPCC Aerostructures | Wilkes Barre | PA | Transportation Equipment Manufacturing336412 | 1-19 | ◐ LIKELY ACTIVE |
| PCPerformance Composite LLC | Pittsburgh | PA | Transportation Equipment Manufacturing336992 | — | ◐ LIKELY ACTIVE |
| PVPhiladelphia VM | Philadelphia | PA | Transportation Equipment Manufacturing336212 | 20-99 | ◐ LIKELY ACTIVE |
| PSPhilly Shipyard INC | Philadelphia | PA | Transportation Equipment Manufacturing336611 | 500+ | ◐ LIKELY ACTIVE |
| PSPickering Street | Brookville | PA | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| PHPine Hill Manufacturing LLC | Gap | PA | Transportation Equipment Manufacturing336214 | 20-99 | ◐ LIKELY ACTIVE |
| PPPittsburgh, PA | Pittsburgh | PA | Printing and Related Support Activities323111 | 20-99 | ◐ LIKELY ACTIVE |
| PVPittsburgh VM | Bridgeville | PA | Transportation Equipment Manufacturing336212 | 20-99 | ◐ LIKELY ACTIVE |
| PSPowells Sales and Service INC | Scott Township | PA | Transportation Equipment Manufacturing336211 | — | ◐ LIKELY ACTIVE |
| PWPratt & Whitney Amercon | Middletown | PA | Transportation Equipment Manufacturing336412 | 100-499 | ◐ LIKELY ACTIVE |
| PMPrimo Mobility LLC | Aliquippa | PA | Transportation Equipment Manufacturing336999 | — | ◐ LIKELY ACTIVE |
| RDRaptor Defense Company | Philadelphia | PA | Transportation Equipment Manufacturing336992 | — | ◐ LIKELY ACTIVE |
| RMRdx Military Parts LLC | Collegeville | PA | Transportation Equipment Manufacturing336992 | — | ◐ LIKELY ACTIVE |
| RPReading PA Trackworks | Reading | PA | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| RIReitnouer INC | Reading | PA | Transportation Equipment Manufacturing336212 | 20-99 | ◐ LIKELY ACTIVE |
| RIReitnouer INC. | Birdsboro | PA | Transportation Equipment Manufacturing336212 | 100-499 | ◐ LIKELY ACTIVE |
| RPRidley Park, PA (PA015) | Ridley Park | PA | Transportation Equipment Manufacturing336411 | 500+ | ◐ LIKELY ACTIVE |
| RTRwb - Tsi | Aston | PA | Transportation Equipment Manufacturing336350 | 1-19 | ◐ LIKELY ACTIVE |
| SGSannohs Group INC | Philadelphia | PA | Transportation Equipment Manufacturing336999 | — | ◐ LIKELY ACTIVE |
| SHScranton Hub | Moosic | PA | Transportation Equipment Manufacturing336212 | 20-99 | ◐ LIKELY ACTIVE |
| SPScranton Plant | Eynon | PA | Transportation Equipment Manufacturing336992 | 100-499 | ◐ LIKELY ACTIVE |
| SUSKF USA Inc. | Hanover | PA | Transportation Equipment Manufacturing336412 | 20-99 | ◐ LIKELY ACTIVE |
| SESmeal - Ephrata | Ephrata | PA | Transportation Equipment Manufacturing336212 | 100-499 | ◐ LIKELY ACTIVE |
| SWSomerset Welding and Steel Company, Inc - Dump Plant | Somerset | PA | Transportation Equipment Manufacturing336211 | 100-499 | ◐ LIKELY ACTIVE |
| SPSouth Pittsburgh IC | New Stanton | PA | Transportation Equipment Manufacturing336212 | 20-99 | ◐ LIKELY ACTIVE |
| SHSTE Hackney Inc. - Montgomery, PA | Montgomery | PA | Transportation Equipment Manufacturing336212 | 100-499 | ◐ LIKELY ACTIVE |
| SSStein Seal Industrial | Telford | PA | Transportation Equipment Manufacturing336412 | 1-19 | ◐ LIKELY ACTIVE |
| SESutphen East Corporation | Lake Ariel | PA | Transportation Equipment Manufacturing336120 | 20-99 | ◐ LIKELY ACTIVE |
| TSTextron Systems - Lycoming Engines | Williamsport | PA | Transportation Equipment Manufacturing336412 | 500+ | ◐ LIKELY ACTIVE |
| TNTriumph - North Wales, PA | North Wales | PA | Transportation Equipment Manufacturing336413 | 20-99 | ◐ LIKELY ACTIVE |
| TCTruckCraft Corporation | Chambersburg | PA | Transportation Equipment Manufacturing336211 | 1-19 | ◐ LIKELY ACTIVE |
| TCTruck-Lite Co., LLC | Mcelhattan | PA | Transportation Equipment Manufacturing336320 | 100-499 | ◐ LIKELY ACTIVE |
| TCTruck-lite Co., LLC | Erie | PA | Transportation Equipment Manufacturing336320 | — | ◐ LIKELY ACTIVE |
| TETruck-Lite, Erie Facility | Erie | PA | Transportation Equipment Manufacturing336320 | 20-99 | ◐ LIKELY ACTIVE |
| UAUSSC Acquisition Corp | Exton | PA | Transportation Equipment Manufacturing336360 | 100-499 | ◐ LIKELY ACTIVE |
| VEValero Enterprises, Inc | Delmont | PA | Transportation Equipment Manufacturing336120 | 20-99 | ◐ LIKELY ACTIVE |
| VVango | Verona | PA | Transportation Equipment Manufacturing336390 | 20-99 | ◐ LIKELY ACTIVE |
| WJWabash Jonestown | Jonestown | PA | Transportation Equipment Manufacturing336211 | 100-499 | ◐ LIKELY ACTIVE |
| WWabtec-Erie | Erie | PA | Transportation Equipment Manufacturing336510 | 500+ | ◐ LIKELY ACTIVE |
| WWWabtec Wilmerding Freight Car and Locomotive Products | Wilmerding | PA | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| WBW Baker Management, Inc. DBA UKM Transit Products | Harleysville | PA | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| WTWellsboro Truck-Lite Co., LLC | Wellsboro | PA | Transportation Equipment Manufacturing336320 | 100-499 | ◐ LIKELY ACTIVE |