| RMR/t Manufacturing INC | Garland | TX | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| RPRush Precision Machining LLC | Lagrange | OH | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| SJSan Jose Die Casting & Machining CORP. | Lincoln | CA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| SMS&B Metal Products of Bradenton LLC | Bradenton | FL | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
| SGSchaffer Grinding CO INC | Santa Fe Springs | CA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| SIScherer Inc. | Sioux Falls | SD | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| SMSchott Manufacturing Solutions LLC | Longmont | CO | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
Schwoeppe Machine & Tool | Marthasville | MO | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| STSebewaing Tool and Engineering | Sebewaing | MI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| SMService Machine & Tool CO | Elmira | NY | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| SMShields Manufacturing, INC | Tualatin | OR | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| SPShip Point Machine CO INC | Hollywood | MD | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| SMS&h Melkes | South El Monte | CA | Fabricated Metal Product Manufacturing332710 | 1-19 | ◐ LIKELY ACTIVE |
| SPSienko Precision, LLC | Houston | TX | Fabricated Metal Product Manufacturing332312 | 1-19 | ◐ LIKELY ACTIVE |
| SPSimfer Precision Machine CO | Billerica | MA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| SFSimmons Fabricators, LTD | Pasadena | TX | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| SMSkovira Machine CO | Scottdale | PA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| SHSlim Haney Machining, INC. | Tulsa | OK | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| SMSlothower Machine Shop LLC | York | PA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| SCSmyth County Machine & Fabrication LLC | Atkins | VA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| SPSolo Precision, INC. | Rancho Cucamonga | CA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| SISonic Industries, INC. | Torrance | CA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| SMSouthern Manufacturing Technologies, Inc. | Tampa | FL | Fabricated Metal Product Manufacturing332710 | 100-499 | ◐ LIKELY ACTIVE |
| SSSouth Side Machine Works, Inc. | Saint Louis | MO | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| SESparc Engineers LLC | Warsaw | IN | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| SMSpc Maclean LLC | Madison | NH | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| SFSpencer Forge & Mfg. | Spencer | OH | Fabricated Metal Product Manufacturing332111 | 1-19 | ◐ LIKELY ACTIVE |
| SMSpenco Machine & Manufacturing INC. | Temecula | CA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| SMSpire Manufacturing Solutions LLC | Colorado Springs | CO | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| SMStamler Machine CO INC | Louisville | KY | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| SStaples | Staples | MN | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| SEStar Engineering LLC | New Lexington | OH | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| SPStarrex Precision Parts INC | Mesa | AZ | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| SPStaub Precision Machine | Hamburg | NY | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| SMStephens Machine Incorporated | Kokomo | IN | Fabricated Metal Product Manufacturing332312 | 1-19 | ◐ LIKELY ACTIVE |
| SMSteward Machine CO INC | Birmingham | AL | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| SIStewart Industries INC | Cincinnati | OH | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| SMSubtractive Manufacturing LLC | Hollister | CA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| SASuperior Aerospace | Fridley | MN | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| SMSuperior Machine INC | Albia | IA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| SWSwartfager Welding, INC. | Knox | PA | Fabricated Metal Product Manufacturing332313 | 100-499 | ◐ LIKELY ACTIVE |
| SPSwissline Precision LLC. | Cumberland | RI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| SISwissmetric, INC. | Grants Pass | OR | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| SMSwiss-tech Machining, LLC | Roseville | CA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| TCTamshell CORP | Corona | CA | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| TTcr | Houston | TX | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| TMTech Met, Inc. - Donora | Donora | PA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| TLTechni-cast LLC | South Gate | CA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| TTTennessee Tool & Engineering, INC. | Oak Ridge | TN | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| TMTexoma Millwright and Welding, INC. | Durant | OK | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |