| RMReliable Machine & Manufacturing CO INC | Hiawatha | IA | — | ◇ UNVERIFIED |
| RMRel Machine INC | Calumet | MI | — | ◇ UNVERIFIED |
| RMRel Machine INC | Calumet | MI | — | ◇ UNVERIFIED |
| RMRepair Machine and Engineering INC | Gardena | CA | — | ◇ UNVERIFIED |
| RDRepublic Diesel INC | Harrogate | TN | — | ◇ UNVERIFIED |
| RDRepublic Drill/apt CORP. | Miami | FL | — | ◇ UNVERIFIED |
| RGResearch Group Three INC | Anaheim | CA | — | ◇ UNVERIFIED |
| RResearchtool | Guilford | CT | — | ◇ UNVERIFIED |
| RTResearch Tool Corporation | Ovid | MI | — | ◇ UNVERIFIED |
| RMRettig Machine Shop, INC. | Redlands | CA | — | ◇ UNVERIFIED |
| REReuland Electric CO | Brea | CA | — | ◇ UNVERIFIED |
| RIRev Industries LLC | Cromwell | CT | — | ◇ UNVERIFIED |
| RTRev Tech Lc | Des Moines | IA | — | ◇ UNVERIFIED |
| RCRex Companies, INC | Newport News | VA | — | ◇ UNVERIFIED |
| RIRex Iron & Machine Products INC | Denver | CO | — | ◇ UNVERIFIED |
| RPReyco Precision Welding INC. | Elk Grove Village | IL | — | ◇ UNVERIFIED |
| R2RH 2031 Calvin, LLC | Grand Rapids | MI | — | ◇ UNVERIFIED |
| RMR&H Manufacturers LLC | Edwardsville | PA | — | ◇ UNVERIFIED |
| RIRHP Investments, LLC | Wausau | WI | — | ◇ UNVERIFIED |
| RBRichard Brothers Punch Co* | Memphis | TN | — | ◇ UNVERIFIED |
| RMRichards Micro-tool, LLC | Plymouth | MA | — | ◇ UNVERIFIED |
| RJRichardson Joyce | Newbury Park | CA | — | ◇ UNVERIFIED |
| RTRichard Tool & Die CORP | New Hudson | MI | — | ◇ UNVERIFIED |
| RSRichland Screw Machine Parts, INC. | Mansfield | OH | — | ◇ UNVERIFIED |
| RTRichmond Tooling INC | Colonial Heights | VA | — | ◇ UNVERIFIED |
| RCRidgefield Company, LLC | Grand Rapids | MI | — | ◇ UNVERIFIED |
| RPRid-lom Precision Mfg. CORP. | Rochester | NY | — | ◇ UNVERIFIED |
| RIR & I Enterprises, INC. | Brownsville | TX | — | ◇ UNVERIFIED |
| RMRiggs Machine & Fabricating INC. | Ashland | KY | — | ◇ UNVERIFIED |
| RARight Angle, INC. | Cedar Rapids | IA | — | ◇ UNVERIFIED |
| RMRigid Machining, LLC | Browerville | MN | — | ◇ UNVERIFIED |
| RERigo's Equipment Manufacturing, LLC | Baldwin Park | CA | — | ◇ UNVERIFIED |
| RIRija INC. | Oak Hill | WV | — | ◇ UNVERIFIED |
| RMRiley Machine Specialties INC | North Plains | OR | — | ◇ UNVERIFIED |
| RERincon Engineering Technologies | San Diego | CA | — | ◇ UNVERIFIED |
| RMRios Machine & Tool | Shelton | CT | — | ◇ UNVERIFIED |
| RMRiser Machine CORP | New Lenox | IL | — | ◇ UNVERIFIED |
| RMRissco Machine, L.l.c. | Corpus Christi | TX | — | ◇ UNVERIFIED |
| RRRisse Racing Technology Incorporated | Redmond | OR | — | ◇ UNVERIFIED |
| RLRittek LLC | Richmond | KY | — | ◇ UNVERIFIED |
| RPRitter Properties Trust | Reno | NV | — | ◇ UNVERIFIED |
| RDRitz Davish Investments, LLC | Wixom | MI | — | ◇ UNVERIFIED |
| RPRival Precision Manufacturing Rpm LLC | Alvarado | TX | — | ◇ UNVERIFIED |
| RCRiver Cities Machine LLC | Bossier City | LA | — | ◇ UNVERIFIED |
| RMRivercity Manufacturing and Machining Company | Winona | MN | — | ◇ UNVERIFIED |
| RSRiverfalls Shop | River Falls | AL | — | ◇ UNVERIFIED |
| RMRiverside Machine | Tulsa | OK | — | ◇ UNVERIFIED |
 Riverside Manufacturing INC | Ramsey | MN | — | ◇ UNVERIFIED |
| RDRiverwatch Development, LLC | Reno | NV | — | ◇ UNVERIFIED |
| RMRjc Manufacturing Services, LLC | North Huntingdon | PA | — | ◇ UNVERIFIED |
| RMRJD Machining, LLC | Homer | IL | — | ◇ UNVERIFIED |
| RJR & J Machining INC | Almont | MI | — | ◇ UNVERIFIED |
| RMR&j Manufacturing INC | Glendale | AZ | — | ◇ UNVERIFIED |
| RTRjs Tool & Gage INC | Birmingham | MI | — | ◇ UNVERIFIED |
| RJR. J. Zeman Tool & Mfg. Co., INC. | Waukesha | WI | — | ◇ UNVERIFIED |
| RCR.k. Cylindrical Grinding INC | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| RWRK Waterjet LLC | Gray Summit | MO | — | ◇ UNVERIFIED |
| RERlb Engineering Company INC | Valencia | CA | — | ◇ UNVERIFIED |
| RMR&l Machine Works | Columbus | GA | — | ◇ UNVERIFIED |
| RLR & L Machining LLC | Wichita | KS | — | ◇ UNVERIFIED |
| RERmc Engineering CO INC | Gilroy | CA | — | ◇ UNVERIFIED |
| RGRm Garrison Machining, INC. | Phoenix | AZ | — | ◇ UNVERIFIED |
| RIR.m. Industries, INC. | Purdy | MO | — | ◇ UNVERIFIED |
| RTRml Tool and Die Company | Cleveland | OH | — | ◇ UNVERIFIED |
| RMRoad Machinery CO | Tucson | AZ | — | ◇ UNVERIFIED |
| RTRoark Tools | Chester | NJ | — | ◇ UNVERIFIED |
| RTRobbins Tools Die & Mfg CO INC | Henderson | TN | — | ◇ UNVERIFIED |
| RBRobert Baker | Gainesville | FL | — | ◇ UNVERIFIED |
| RJRobert J. Moran, INC. | Littleton | MA | — | ◇ UNVERIFIED |
| RMRobert M. Lane | Riverside | CA | — | ◇ UNVERIFIED |
| RORobert O'dell Designs | Santa Rosa | CA | — | ◇ UNVERIFIED |
| RERobert's Enterprises, INC. | Brookfield | MA | — | ◇ UNVERIFIED |
| RMRoberts Machine Products, LLC | West Liberty | OH | — | ◇ UNVERIFIED |
| RPRobert's Precision Engineering, Inc., a California Corporation | Anaheim | CA | — | ◇ UNVERIFIED |
 Robert Wall Enterprises Dba Sawing Services | Chatsworth | CA | — | ◇ UNVERIFIED |
| RFRob Finlon INC | Seattle | WA | — | ◇ UNVERIFIED |
| RMRobin Machine INC | Minneapolis | MN | — | ◇ UNVERIFIED |
| RMRobin Machine INC | Plymouth | MN | — | ◇ UNVERIFIED |
| RIRobinson Industrial Machining, INC | Dallas | GA | — | ◇ UNVERIFIED |
| RWRob Widiner Machining | Carpinteria | CA | — | ◇ UNVERIFIED |
| RERoca Engineering Inc. | Fontana | CA | — | ◇ UNVERIFIED |
| RMRochester Metalwerx & Manufacturing INC | Lake City | MN | — | ◇ UNVERIFIED |
| RPRochester Precision Machine INC | Rochester | MN | — | ◇ UNVERIFIED |
| RTRochester Tool & Cutter | Rochester Hills | MI | — | ◇ UNVERIFIED |
| RTRoche Tool & Die Corporation | Marlborough | MA | — | ◇ UNVERIFIED |
| RMRockhill Machine, LLC | Barberton | OH | — | ◇ UNVERIFIED |
| RCRockingham-lunex Company - Former Site of | Bettendorf | IA | — | ◇ UNVERIFIED |
| RCRockquality Consulting LLC | Liberty Hill | TX | — | ◇ UNVERIFIED |
| RMRocksteady Manufacturing LLC | Roseville | MI | — | ◇ UNVERIFIED |
| RMRocky Mountain Electric Motors | Grand Junction | CO | — | ◇ UNVERIFIED |
| RTRocky Top Machine | West Plains | MO | — | ◇ UNVERIFIED |
| RPRodak Plastics CO. INC. | Hayward | CA | — | ◇ UNVERIFIED |
| RIRodrigco Industries Inc. | Oceanside | CA | — | ◇ UNVERIFIED |
| RPRoebuck Precision Machine, INC | Goldsboro | NC | — | ◇ UNVERIFIED |
| RTRoehr Tool Solutions | Sterling | MA | — | ◇ UNVERIFIED |
| RMRogers Machine Company, INC. | Louisville | KY | — | ◇ UNVERIFIED |
| RTRogers Tool Works | Rogers | AR | — | ◇ UNVERIFIED |
| RERogue Energies, LLC | Rogue River | OR | — | ◇ UNVERIFIED |
| RIRohr Industries, INC. | Saint Marys | PA | — | ◇ UNVERIFIED |
 Rolar Manufacturing Corporation | Muskegon Heights | MI | — | ◇ UNVERIFIED |
