| Quality Machine Inc. | Plaistow | NH | $0 |
| Quality Machining & Design, Inc. | San Jose | CA | Subcontractor |
| Quality Machining Inc. | Waunakee | WI | Subcontractor |
| Quality Production Services | Inverness | FL | Subcontractor |
| Quality Products & Machine LLC | Charlotte | NC | Subcontractor |
| Quality Tech MFG., Inc. | Bloomington | CA | Subcontractor |
| Quest Specialty Products Inc. | Bridgeton | MO | Subcontractor |
| Ragsdale Industries, Inc. | Englewood | CO | Subcontractor |
| Raka Corporation | Toledo | OH | Subcontractor |
| Raloid Corporation | Reisterstown | MD | Subcontractor |
| Ramco Machine LLC | Rowley | MA | Subcontractor |
| Ramp Engineering Inc. | Paramount | CA | Subcontractor |
| Ram Tool, Inc. | Grafton | WI | Subcontractor |
| R And L Machine Shop, Inc. | Chesapeake | VA | $0 |
| Rapid DTM Inc. | Amherst | NH | Subcontractor |
| Rapid Expedite Machine Service, LLC | Cocoa | FL | Subcontractor |
| Rapid Machine Shop LLC | Wichita | KS | $0 |
| Rapid Precision Machining & Gearing Ltd. | Kitchener | ON | Subcontractor |
| Raven Operations LLC | Bedford | IN | Subcontractor |
| Ray Machine Corporation | Terryville | CT | Subcontractor |
| Ray Machine Inc. | Middle River | MD | Subcontractor |
| R. A. Zweig, Inc. | Glenview | IL | $0 |
| R C I P, Inc. | Anaheim | CA | Subcontractor |
| RDL Machine, LLC | Bossier City | LA | $0 |
| R&D Machine, LLC | Oldsmar | FL | Subcontractor |
| RDS Machine, LLC | Newport | NH | Subcontractor |
| Redco Machine, Inc. | Bedford | VA | Subcontractor |
| Red Line Engineering, Inc. | Greenwood | CA | Subcontractor |
| R E Dye Manufacturing Corp. | Breckenridge | TX | Subcontractor |
| Regal Industries Inc. | Painesville | OH | $0 |
| Regal Machine, Inc. | Wyoming | MN | Subcontractor |
| Reich Tool & Design, Inc. | Menomonee Falls | WI | Subcontractor |
| Reliable Bronze & MFG., Inc. | Stanchfield | MN | $0 |
| Remmi Corp. | Deland | FL | Subcontractor |
| Rennscot LLC | Woburn | MA | Subcontractor |
| Reo Machining | Nashua | NH | Subcontractor |
| Responsive Machining Inc. | Titusville | FL | $0 |
| Revolutionary Manufacturing Solutions, LLC | East Boston | MA | Subcontractor |
| Revolution Prototype Inc. | Stuart | FL | $0 |
| Reyco Precision Machining Inc. | Englewood | CO | Subcontractor |
| Reynolds Machine Co. | Ruffs Dale | PA | Subcontractor |
| Rhinestahl Corporation | Mason | OH | Subcontractor |
| Richards Design, Inc. | East Falmouth | MA | Subcontractor |
| Richmond Area Common Equity, LLC | Richmond | VA | Subcontractor |
| Ridgeline Manufacturing & Engineering Inc. | Sandia Park | NM | Subcontractor |
| Rincon Engineering Technologies | Carpinteria | CA | Subcontractor |
| R.i.s. Manufacturing | Anaheim | CA | Subcontractor |
| Riverside Machine And Engineering, Inc. | Eau Claire | WI | Subcontractor |
| R & J Cylinder & Machine, Inc. | New Philadelphia | OH | $0 |
| Robert C. Weisheit Co. Inc. | Glendale Heights | IL | Subcontractor |
| Robert's Precision Engineering, Inc. | Anaheim | CA | Subcontractor |
| Roberts Precision Machine, Inc. | Monroe | WA | $0 |
| Rocksmith Precision Machining Inc. | Los Alamos | NM | Subcontractor |
| Roller Bearing Company Of America, Inc. | Ball Ground | GA | Subcontractor |
| Rolling Enterprises Inc. | Moraine | OH | Subcontractor |
| Ron Witherspoon Inc. | Campbell | CA | Subcontractor |
| Rosenberger North America Pennsauken, Inc. | Pennsauken | NJ | Subcontractor |
| Ross Machine Company Inc. | Belcamp | MD | Subcontractor |
| Ross Precision Manufacturing Inc. | Green Island | NY | Subcontractor |
| Roysters Machine Shop LLC | Henderson | KY | $0 |
| R.s. Precision Industries, Inc. | Farmingdale | NY | Subcontractor |
| RTC Aerospace Fife Division LLC | Fife | WA | Subcontractor |
| RTD Manufacturing, Inc. | Jackson | MI | $0 |
| R/T Manufacturing Inc. | Garland | TX | $0 |
| Ruhl Inc. | Spring Lake | NC | $0 |
| Russard, Inc. | Rockland | MA | Subcontractor |
| Rw Raddatz Inc. | Deerfield Beach | FL | $0 |
| Saar Corp. | Farmington | CT | Subcontractor |
| Salem Tool Co. | Northville | MI | $0 |
| Salsa Prototype Specialties, LLC | Ventura | CA | $0 |
| Samax Precision, Inc. | Sunnyvale | CA | Subcontractor |
| San Diego Precision Machining, Inc. | San Diego | CA | Subcontractor |
| Santa Fe Enterprises Inc. | Santa Fe Springs | CA | Subcontractor |
| Santa Fe Manufacturing Corp. | Hauppauge | NY | $0 |
| Scandia Propeller Service & Supply, Inc. | Fairhaven | MA | $0 |
| Schmid Tool & Engineering Corp. | Villa Park | IL | $0 |
| Schmidty Fabrication LLC | Carlsbad | NM | Subcontractor |
| Schultes Precision Manufacturing Inc. | Buffalo Grove | IL | $0 |
| Scientiam Machine Company | Harbor City | CA | Subcontractor |
| Sc Machining & Manufacturing LLC | Ripon | WI | Subcontractor |
| S & C Precision, Inc. | Baldwin Park | CA | $0 |
| S&DC Corp. | Mead | CO | Subcontractor |
| SDK Technologies Inc. | Macomb | MI | Subcontractor |
| Seastrom Manufacturing Co. Inc. | Twin Falls | ID | Subcontractor |
| Sepac Machining LLC | Syracuse | NY | Subcontractor |
| Serbin Machining, Inc. | Albuquerque | NM | Subcontractor |
| Setty Enterprises, Inc. | Riviera Beach | FL | Subcontractor |
| Share Machine Inc. | Aurora | IL | $0 |
| Shaw Industries Co. LLC | Franklin | PA | $0 |
| Shelby Supply Co. LLC | Tolland | CT | Subcontractor |
| Sheldon's Machine Shop, Inc. | Klamath Falls | OR | $0 |
| S&H Engineering, Inc. | Chelmsford | MA | Subcontractor |
| Shinco Enterprises LLC | Huntsville | AL | Subcontractor |
| S & H Machine, Inc. | Burbank | CA | Subcontractor |
| Shore Precision Manufacturing, Inc. | Toms River | NJ | Subcontractor |
| Si Aerospace Inc. | Van Nuys | CA | Subcontractor |
| Silver Tool Inc. | Miamisburg | OH | Subcontractor |
| SJD Machining, Inc. | Meadville | PA | $0 |
| Sme Holdings, LLC | Sterling Heights | MI | Subcontractor |
| Smyth County Machine And Fabrication, LLC | Glade Spring | VA | Subcontractor |
