| MJMaya Jig Grinding & Gage CO INC | Farmington Hills | MI | — | ◇ UNVERIFIED |
| MSMcarthur Sheet Metal Works Company | South Sioux City | NE | — | ◇ UNVERIFIED |
| MMMc Metalfab INC | Lino Lakes | MN | — | ◇ UNVERIFIED |
| MIMedco, INC. | Des Plaines | IL | — | ◇ UNVERIFIED |
| MMMelrose Metalworks INC | Melrose | MN | — | ◇ UNVERIFIED |
| MMMendell Machine - Manufacturing INC | Lakeville | MN | — | ◇ UNVERIFIED |
| MCMetal Coating - Mfg CO INC | Isanti | MN | — | ◇ UNVERIFIED |
| MFMetalcraft Fabrication INC | Portland | OR | — | ◇ UNVERIFIED |
| MIMetal Integrity LLC | Carbondale | PA | — | ◇ UNVERIFIED |
| MMMicron Metalworks | Ham Lake | MN | — | ◇ UNVERIFIED |
| MEMidland Equipment CO | Lakeville | MN | — | ◇ UNVERIFIED |
| MMMid-point Machine, INC. | Glenbeulah | WI | — | ◇ UNVERIFIED |
| MTMinnesota Tool - Die Works INC | Anoka | MN | — | ◇ UNVERIFIED |
| MVMission Viejo Ornamental Iron, INC. | Rancho Santa Margarita | CA | — | ◇ UNVERIFIED |
| MEMissouri Equipment Company | Saint Louis | MO | — | ◇ UNVERIFIED |
| MFMj&h Fabrication INC. | Ponca City | OK | — | ◇ UNVERIFIED |
| MTModified Tool INC | Emily | MN | — | ◇ UNVERIFIED |
| MBMonterey Bay Rebar, INC. | Watsonville | CA | — | ◇ UNVERIFIED |
| MTMrg Tool and Die Corporation | Faribault | MN | — | ◇ UNVERIFIED |
| MMM&r Manufacturing, LLC | Houston | TX | — | ◇ UNVERIFIED |
| MMMueller Machine INC | Maple Grove | MN | — | ◇ UNVERIFIED |
| MTMuller Tool, INC. | Buffalo | NY | — | ◇ UNVERIFIED |
| MSMwd Steel Fabrication | Lincoln | NE | — | ◇ UNVERIFIED |
| NPNational Precision Machining & Engineering INC | Sebeka | MN | — | ◇ UNVERIFIED |
| NGNelson Grinding | Fullerton | CA | — | ◇ UNVERIFIED |
 Nelson Numeric INC | Minneapolis | MN | — | ◇ UNVERIFIED |
| NPNevada Precision Sheet Metal, INC. | Las Vegas | NV | — | ◇ UNVERIFIED |
| NCNew Com Metal Products CORP | Randolph | MA | — | ◇ UNVERIFIED |
| NHNew Hampshire Precision Fabricators INC. | Londonderry | NH | — | ◇ UNVERIFIED |
| NMN M Machining | San Jose | CA | — | ◇ UNVERIFIED |
| NCNorth Country Wind Bells INC. | Round Pond | ME | — | ◇ UNVERIFIED |
| NTNorth Topeka Fabrication, LLC | Topeka | KS | — | ◇ UNVERIFIED |
| NPNorthwest Precision INC | Sumner | WA | — | ◇ UNVERIFIED |
| OPOakdale Precision INC | Oakdale | MN | — | ◇ UNVERIFIED |
| OWOehlers Welding and Fabrication, INC. | Buffalo | NY | — | ◇ UNVERIFIED |
| OMOffload Manufacturing Company | Milford | CT | — | ◇ UNVERIFIED |
| OTOlander Tooling of Staples LLC | Staples | MN | — | ◇ UNVERIFIED |
| OMOros Mfg. | Los Angeles | CA | — | ◇ UNVERIFIED |
| OSO-r Systems LTD. | Brookpark | OH | — | ◇ UNVERIFIED |
| OSOscar S Field INC | Ashland | VA | — | ◇ UNVERIFIED |
| OMOverkill Motorsports, INC. | Dallas | TX | — | ◇ UNVERIFIED |
| PMParadis Metalworks LLC | Attleboro Falls | MA | — | ◇ UNVERIFIED |
| PTParagon Tools INC | Logan | UT | — | ◇ UNVERIFIED |
| PPParamount Products CO INC | Brick Town | NJ | — | ◇ UNVERIFIED |
| PKParkway Kew CORP | North Brunswick Twp | NJ | — | ◇ UNVERIFIED |
| PMPerbix Machine CO INC | Golden Valley | MN | — | ◇ UNVERIFIED |
| PAPfi Advanced Equipment Manufacturing, LLC | Mohnton | PA | — | ◇ UNVERIFIED |
 Pinnacle Precision Company, INC. | Glassport | PA | — | ◇ UNVERIFIED |
| POPi Optima INC | Zeeland | MI | — | ◇ UNVERIFIED |
| PCPivot Corporation | Canton | GA | — | ◇ UNVERIFIED |
| PWPlacer Water Works | Olivehurst | CA | — | ◇ UNVERIFIED |
| PTPlasco Tooling & Engineering LLC | Romeo | MI | — | ◇ UNVERIFIED |
| POPlenums of Florida INC | Pinellas Park | FL | — | ◇ UNVERIFIED |
| PBPrecision Bend & Machine CO. | Walcott | IA | — | ◇ UNVERIFIED |
| PIPrecision Industries INC | Broomfield | CO | — | ◇ UNVERIFIED |
| PMPrecision Machine Work, INC. | La Verne | CA | — | ◇ UNVERIFIED |
| PPPrecision Plus INC | Elkhorn | WI | — | ◇ UNVERIFIED |
| PSPrecision Screw Products., INC. of Janesville | Janesville | WI | — | ◇ UNVERIFIED |
| PSPrecision Solutions INC. | Richmond | UT | — | ◇ UNVERIFIED |
| PTPrecision Technology, INC. | Las Cruces | NM | — | ◇ UNVERIFIED |
 Precision Waterjet and Laser | Placentia | CA | — | ◇ UNVERIFIED |
| PTPreferred Tool LLC | Wyoming | MN | — | ◇ UNVERIFIED |
| PTPreferred Tool, LLC | Hugo | MN | — | ◇ UNVERIFIED |
| PCPrinciple Cnc Manufacturing, | Norwood | MN | — | ◇ UNVERIFIED |
 Progressive Machine & Design LLC | Victor | NY | — | ◇ UNVERIFIED |
| QAQuality Aerospace Coating, LLC | Lakeland | FL | — | ◇ UNVERIFIED |
| QAQuality Aircraft Tooling, INC | Marietta | GA | — | ◇ UNVERIFIED |
 Quality Machine & Fabrication, INC. | La Fayette | GA | — | ◇ UNVERIFIED |
| QTQuik Tek Machining, LLC | Wichita | KS | — | ◇ UNVERIFIED |
| RURacks Unlimited, INC | Sylmar | CA | — | ◇ UNVERIFIED |
| RDRanger Die INC | Coopersville | MI | — | ◇ UNVERIFIED |
 Rapid Manufacturing INC. | Powhatan | VA | — | ◇ UNVERIFIED |
| RMR-d Manufacturing, INC. | East Lyme | CT | — | ◇ UNVERIFIED |
| RSReal Steel Fabricators INC | Nashville | TN | — | ◇ UNVERIFIED |
| RLRecherche LLC Dba All My Walls | Pine River | MN | — | ◇ UNVERIFIED |
| RIReflections in Metal, LLC. | Cortez | CO | — | ◇ UNVERIFIED |
| RMRisa Management CORP. | New Lebanon | NY | — | ◇ UNVERIFIED |
| RTRl Tool INC | Minneapolis | MN | — | ◇ UNVERIFIED |
| RMRobbins Manufacturing INC | Fall River | WI | — | ◇ UNVERIFIED |
| RHRobert H Oliva INC Dba Romakk Enginerring | Northridge | CA | — | ◇ UNVERIFIED |
| RIRomak Iron Works | Benicia | CA | — | ◇ UNVERIFIED |
| RERomtex Enterprises, INC. | Sugar Land | TX | — | ◇ UNVERIFIED |
| RFRooks Fabrication, LLC | Tulsa | OK | — | ◇ UNVERIFIED |
| RERotation Engineering - Manufacturing Company | Minneapolis | MN | — | ◇ UNVERIFIED |
| RMRoyal Manufacturing Industries LLC | Santa Ana | CA | — | ◇ UNVERIFIED |
| RMRuff Manufacturing INC | Farmington | MN | — | ◇ UNVERIFIED |
| RMRusert Machine Shop, LLC. | Midland | TX | — | ◇ UNVERIFIED |
| STSaber Tool Company INC. | Cadillac | MI | — | ◇ UNVERIFIED |
| SCSajawi Corporation | Littleton | MA | — | ◇ UNVERIFIED |
| SSSami Super Abrasive Machining and Innovations, LLC | Ridgway | PA | — | ◇ UNVERIFIED |
| SRSanta Rosa Stainless Steel | Santa Rosa | CA | — | ◇ UNVERIFIED |
| SCSanz Clima Dba Kenway Engineering | Fairmont | MN | — | ◇ UNVERIFIED |
| SMSar Manufacturing INC | Albert Lea | MN | — | ◇ UNVERIFIED |
| SIScojet INC. | Brunswick | GA | — | ◇ UNVERIFIED |
| SMScott's Machining, LLC | Corinth | MS | — | ◇ UNVERIFIED |
| SCSeachrome Corporation | Carson | CA | — | ◇ UNVERIFIED |
| SLSeroge L.t. | Riverside | CA | — | ◇ UNVERIFIED |
| SEService Extrusion Die Company INC | Comstock Park | MI | — | ◇ UNVERIFIED |
| SMService Manufacturing Group, INC. | Buffalo | NY | — | ◇ UNVERIFIED |
| SFS & F Sonics, INC Dba Omegasonics | Simi Valley | CA | — | ◇ UNVERIFIED |
