| FLFlogistix LP / Flogistix El Reno | El Reno | — | ◇ UNVERIFIED |
| FEForum Energy Technologies | Guthrie | — | ◇ UNVERIFIED |
| GMGarnesh Machinery | Oklahoma City | — | ◇ UNVERIFIED |
| GIGary's Industrial Machine, LLC | Valliant | — | ◇ UNVERIFIED |
| GRGea Rainey Heat Exchangers, INC. | Catoosa | — | ◇ UNVERIFIED |
| GOGlobal Opportunities, Inc. | Oklahoma City | — | ◇ UNVERIFIED |
| HMHe & M INC | Pryor | — | ◇ UNVERIFIED |
| HMH-v Manufacturing Company | Okmulgee | — | ◇ UNVERIFIED |
| HIHypro INC. | Vinita | — | ◇ UNVERIFIED |
| IHInnovative Homes, LLC | Oklahoma City | — | ◇ UNVERIFIED |
| JIJak Industries LLC | Tulsa | — | ◇ UNVERIFIED |
| JIJcr Industrial LLC | Tulsa | — | ◇ UNVERIFIED |
| JBJet Black Machine, L.l.c. | Oklahoma City | — | ◇ UNVERIFIED |
| KMK&B Machinery, Inc. | Broken Arrow | — | ◇ UNVERIFIED |
| KIKeco, INC. | Oklahoma City | — | ◇ UNVERIFIED |
| KIKonecranes, INC. | Enid | — | ◇ UNVERIFIED |
| MKMaster Kraft Tooling Corporation | Tulsa | — | ◇ UNVERIFIED |
| MMMaxx Machine, INC. | Oklahoma City | — | ◇ UNVERIFIED |
| MSMeridian Sheet Metal, INC. | Oklahoma City | — | ◇ UNVERIFIED |
| MMMid-continent Millwork L.l.c. | Tulsa | — | ◇ UNVERIFIED |
| NONational Oilwell Varco, L.p. | Duncan | — | ◇ UNVERIFIED |
| NONational Oilwell Varco LP - Mobile Rigs / National Oilwell | Lindsay | — | ◇ UNVERIFIED |
| NONational Oilwell Varco LP / Nov Oklahoma City Rig Offshore | Oklahoma City | — | ◇ UNVERIFIED |
| NWNov Wilco | Marlow | — | ◇ UNVERIFIED |
| OMO&g Manufacturing LLC | Skiatook | — | ◇ UNVERIFIED |
| OEOilfield Equipment & Manufacturing, INC. | Shawnee | — | ◇ UNVERIFIED |
| OPO-tex Pumping, L.l.c. | Duncan | — | ◇ UNVERIFIED |
| PMPeak Machining Group, LLC | Skiatook | — | ◇ UNVERIFIED |
| PMPhelps Machine & Fabrication, INC. | Ringling | — | ◇ UNVERIFIED |
| PBPlan B Services and Solutions, LLC | Tulsa | — | ◇ UNVERIFIED |
| PRPollution Reduction Systems, INC. | Ardmore | — | ◇ UNVERIFIED |
| PLPremierflow, LLC | Tulsa | — | ◇ UNVERIFIED |
| PIPRS, Inc. | Tulsa | — | ◇ UNVERIFIED |
| RTRandall's Temperture Control Specialist INC. | Yukon | — | ◇ UNVERIFIED |
| RKRay Kinnunen | Stillwater | — | ◇ UNVERIFIED |
| RDRed Devil, Incorporated | Tulsa | — | ◇ UNVERIFIED |
| RDRed Devil, Incorporated | Pryor | — | ◇ UNVERIFIED |
 Reel Power International, INC. | Oklahoma City | — | ◇ UNVERIFIED |
| RFReplogle Farm Machinery Inc. | Coweta | — | ◇ UNVERIFIED |
| RRR & R Engineering | Broken Arrow | — | ◇ UNVERIFIED |
| SKService King Manufacturing, INC. | Stroud | — | ◇ UNVERIFIED |
| SSShawn Sutton Shavings Inc | Antlers | — | ◇ UNVERIFIED |
| SISmdi, INC. | Oklahoma City | — | ◇ UNVERIFIED |
| SSSpecific Systems, LLC | Tulsa | — | ◇ UNVERIFIED |
| STSteel Tek | Tulsa | — | ◇ UNVERIFIED |
| SRSucker Rod Mfg | Claremore | — | ◇ UNVERIFIED |
| TCTarget Completions LLC | Broken Arrow | — | ◇ UNVERIFIED |
| TITaylor Industries LLC | Erick | — | ◇ UNVERIFIED |
| TMTci Manufacturing & Equipment Sales, INC. | Pryor | — | ◇ UNVERIFIED |
| TITek-Fins Incorporated | Tulsa | — | ◇ UNVERIFIED |
