| SMSheet Metal Components INC. | Cartersville | GA | 20–99 | ● ACTIVE |
| SES&h Engineering, INC | Chelmsford | MA | — | ● ACTIVE |
Shoemaker Mfg Solutions INC. | Souderton | PA | — | ● ACTIVE |
Shumaker Industries INC | Northumberland | PA | 20–99 | ● ACTIVE |
Shure Manufacturing Corporation | Washington | MO | — | ● ACTIVE |
Silicon Valley Precision, INC. | Livermore | CA | — | ● ACTIVE |
Sinclair and Sons Custom Welding and Machining Service INC. | Wichita | KS | — | ● ACTIVE |
Sjd Machining, INC. | Meadville | PA | 20–99 | ● ACTIVE |
Skilled Manufacturing, INC | Traverse City | MI | — | ● ACTIVE |
Sko-die, LLC | Morton Grove | IL | 20–99 | ● ACTIVE |
Small Parts Manufacturing Co., INC. | Portland | OR | — | ● ACTIVE |
Smith Brothers Tool Company | Shelby Township | MI | — | ● ACTIVE |
| SMSolon Manufacturing CO | Chardon | OH | — | ● ACTIVE |
Sonic Aerospace INC. | Chandler | AZ | — | ● ACTIVE |
Sonic Manufacturing Corporation | Elk Grove Village | IL | — | ● ACTIVE |
Sonoma Industries, INC. | Bell Gardens | CA | — | ● ACTIVE |
Soundwich, INC | Cleveland | OH | — | ● ACTIVE |
Southbridge Sheet Metal Works, INC | Sturbridge | MA | — | ● ACTIVE |
Southeastern Specialty Vehicles, INC. | Henderson | NC | — | ● ACTIVE |
Southern Machine Works INC | Duncan | OK | 20–99 | ● ACTIVE |
Space-lok, INC. | Gardena | CA | — | ● ACTIVE |
| SSSpartanburg Steel Products,inc. | Spartanburg | SC | 100–499 | ● ACTIVE |
Sparton Technology CORP | Hudson | NH | 20–99 | ● ACTIVE |
| SPSpecial Parts Manufacturing, INC. | Holdenville | OK | — | ● ACTIVE |
Specialty Machining INC | Newberry | FL | — | ● ACTIVE |
Specialty Piping Products LLC | Theodore | AL | 20–99 | ● ACTIVE |
Specialty Washer CO of South Carolina INC | Bamberg | SC | 100–499 | ● ACTIVE |
Spec Tool Company | Santa Fe Springs | CA | — | ● ACTIVE |
Spectrum Custom Molds & Manufacturing, INC | Palmetto | FL | — | ● ACTIVE |
Spike Systems, INC | Phoenix | AZ | — | ● ACTIVE |
Spirol Shim Corporation | Stow | OH | — | ● ACTIVE |
Spitz INC | Chadds Ford | PA | 20–99 | ● ACTIVE |
| SMSp Machine, INC | Hudson | MA | — | ● ACTIVE |
| SISpsm Industries INC | Burnsville | MN | — | ● ACTIVE |
Spyderco, INC. | Golden | CO | — | ● ACTIVE |
Srpm INC | Solon | OH | 20–99 | ● ACTIVE |
S & R Tool, INC | Lakeville | NY | — | ● ACTIVE |
S & S Carbide Tool, INC. | Poway | CA | — | ● ACTIVE |
Ssp Fittings CORP | Twinsburg | OH | 100–499 | ● ACTIVE |
| SSS & S Tool & Machine CO | Louisville | KY | 20–99 | ● ACTIVE |
Stackbin CORP | Lincoln | RI | — | ● ACTIVE |
Stacy Machine & Tooling INC | Broomfield | CO | — | ● ACTIVE |
Standard Die International, INC | Livonia | MI | — | ● ACTIVE |
| SEStanley Engineered Fastening LLC | Stanfield | NC | 20–99 | ● ACTIVE |
Stanley Engineering Company, LLC | Glen Burnie | MD | — | ● ACTIVE |
Stanley Machining & Tool CORP | Carpentersville | IL | 100–499 | ● ACTIVE |
Starlite Diversified INC | Meadville | PA | — | ● ACTIVE |
Steelville Manufacturing CO | Steelville | MO | — | ● ACTIVE |
Stegman Tool Co, INC | Troy | MI | — | ● ACTIVE |
Stephens Precision, INC | Bradford | VT | — | ● ACTIVE |
Sterling Machine Technologies, INC. | Palmyra | PA | 20–99 | ● ACTIVE |
Sterling Precision, LLC | Clinton | MA | — | ● ACTIVE |
Stines' Machine, INC. | Vista | CA | — | ● ACTIVE |
Storage & Handling Systems, INC. | North Plains | OR | — | ● ACTIVE |
Straight Street LLC | Kent | OH | — | ● ACTIVE |
Straitek, LLC | Danbury | CT | — | ● ACTIVE |
Straton Industries, INC. | Stratford | CT | — | ● ACTIVE |
| SMStrickland Machine Company, LLC | Richmond | VA | 1–19 | ● ACTIVE |
Strohwig Industries, INC. | Richfield | WI | 100–499 | ● ACTIVE |
Strom Manufacturing, LLC | North Plains | OR | — | ● ACTIVE |
Structural Metal Fabricators, INC. | Palmerton | PA | 20–99 | ● ACTIVE |
Suhm Spring Works, INC. | Houston | TX | 100–499 | ● ACTIVE |
Sulzer Machine & Manufacturing INC | Mosinee | WI | — | ● ACTIVE |
Summit Machine Solutions LLC | Akron | OH | — | ● ACTIVE |
Summit Machining Co., LTD. | Mogadore | OH | — | ● ACTIVE |
| STSummit Truck Bodies LLC | Wathena | KS | 100–499 | ● ACTIVE |
Sun Badge CO. | Ontario | CA | — | ● ACTIVE |
Suntiger Industries LLC | Oceanside | CA | — | ● ACTIVE |
Superabrasives INC | Wixom | MI | — | ● ACTIVE |
Superbolt INC | Clinton | PA | 100–499 | ● ACTIVE |
Superior Grinding & Sales, INC. | South Salt Lake | UT | — | ● ACTIVE |
Superior Machining and Fabrication INC | Muenster | TX | — | ● ACTIVE |
Superior Motion Controls, INC. | Farmingdale | NY | — | ● ACTIVE |
Superior Process Solutions, L.l.c. | Springfield | MO | — | ● ACTIVE |
Superior Steel, LLC | Eugene | OR | — | ● ACTIVE |
Surface Engineering Specialties | Sunnyvale | CA | 20–99 | ● ACTIVE |
Survival Innovations, LLC | Mills River | NC | 20–99 | ● ACTIVE |
Swab Wagon Company | Elizabethville | PA | 20–99 | ● ACTIVE |
| SPSwiss Precision Products, INC. | North Oxford | MA | 1–19 | ● ACTIVE |
Swiss Productions, INC | Liberty Lake | WA | — | ● ACTIVE |
| SISwissturn/usa, INC. | Oxford | MA | 20–99 | ● ACTIVE |
S & W Machine Shop, INC | New Iberia | LA | — | ● ACTIVE |
| SESystems Engineering and Manufacturing INC | Forest | VA | 1–19 | ● ACTIVE |
Tactical Ar500 Targets INC | Robesonia | PA | — | ● ACTIVE |
Taggart Enterprises INC | Parker | CO | — | ● ACTIVE |
Talbar INC | Meadville | PA | — | ● ACTIVE |
Tallmadge Spinning & Metal Company | Akron | OH | — | ● ACTIVE |
Tam Precision, LLC | Mahwah | NJ | — | ● ACTIVE |
Tapemation Machining INC. | San Jose | CA | — | ● ACTIVE |
| TETaylor Edm Specialties LLC | Wauconda | IL | — | ● ACTIVE |
Taylor Manufacturing CO INC | Springfield | OH | — | ● ACTIVE |
Tda Magnetics LLC | Rancho Dominguez | CA | — | ● ACTIVE |
Team Technologies, INC. | Albuquerque | NM | — | ● ACTIVE |
Tecfar Manufacturing, INC. | Sun Valley | CA | — | ● ACTIVE |
Tech Etch INC | Fall River | MA | — | ● ACTIVE |
Tech Met INC | Glassport | PA | 20–99 | ● ACTIVE |
Technetics Group Daytona, INC. | Daytona Beach | FL | — | ● ACTIVE |
Technical Services Incorporated | Ames | IA | — | ● ACTIVE |
Tec, INC. | Frederick | MD | — | ● ACTIVE |
Tecnico Corporation | Chesapeake | VA | — | ● ACTIVE |