4m Sigma Corporation
1900 W Emerson Pl, Seattle, WA 98119
Operating signal within 24 months, or from a single source.
What they make
Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals334515- aerospace manufacturing
- backshop test equipment
- operational support equipment
- airframe cable assemblies
- safety training
- shorting adapters
- commercial aviation
- defense
NAMED ON THE COMPANY’S OWN WEBSITE, READ JUL 29, 2026
Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Brooks Rand, INC. | Seattle | Analytical Laboratory Instrument Manufacturing 334516 | LIKELY ACTIVE | 0.6 KM |
| Fialab Instruments, INC. | Seattle | Analytical Laboratory Instrument Manufacturing 334516 | ACTIVE | 0.5 KM |
| Thermetrics, LLC | Seattle | Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables 334513 | ACTIVE | 0.6 KM |
| Rugged Controls LLC | Seattle | Other Measuring and Controlling Device Manufacturing 334519 | ACTIVE | 0.6 KM |
| Biosonics, INC | Seattle | Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 334511 | ACTIVE | 0.8 KM |
Also at this address
No other federal record shares this street address.
Where this record comes from
2 sources hold this plant, and 8 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.
- The company’s own websiteOPERATINGfirst seen JUL 2026 · last seen OCT 2026
- SAM.gov entity registrationOPERATINGRecord T955WM3QK355 · first seen SEP 2025 · last seen SEP 2025
IN KING COUNTY95 other plants share this one’s industry (Navigational, Measuring, Electromedical, and Control Instruments Manufacturing, NAICS 3345); 29 of them have a size band on record.
What each source says
Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.
- Name
- SAM.gov: 4M SIGMA CORPORATION · SEP 2025
- Street address
- SAM.gov: 1900 W EMERSON PL · SEP 2025
- City
- SAM.gov: SEATTLE · SEP 2025
- State
- SAM.gov: WA · SEP 2025
- Coordinates
- Census geocoder: 47.654418377321,-122.381342426035 · JUL 2026
- Website
- SAM.gov: http://www.4MSigma.com · SEP 2025
- CAGE code
- SAM.gov: 0BC31 · SEP 2025
- SAM registration expires
- SAM.gov: 2026-09-19 · SEP 2025