Harbor Island Machine Works, INC
3431 11th Ave Sw, Seattle, WA 98134
Operating signal within 24 months, or from a single source.
What they make
Machine Shops332710Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Coho Marine | Seattle | Gasket, Packing, and Sealing Device Manufacturing 339991 | LIKELY ACTIVE | 1.6 KM |
| Blue Heron Group, INC. | Seattle | Machine Shops 332710 | ACTIVE | 2.2 KM |
| Rob Finlon INC | Seattle | Machine Shops 332710 | UNVERIFIED | 1.8 KM |
| J D Ott CO INC | Seattle | Precision Turned Product Manufacturing 332721 | ACTIVE | 2.2 KM |
| Machinists, INC. | Seattle | Machine Shops 332710 | ACTIVE | 4.4 KM |
Also at this address
No other federal record shares this street address.
Where this record comes from
2 sources hold this plant, and 11 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.
- SAM.gov entity registrationOPERATINGRecord FMZ8G2F2QE52 · first seen JAN 2026 · last seen JAN 2026
- DOL Form 5500 retirement plan filingsOPERATINGRecord 910690586|WA|98134|3431 11th ave sw · first seen DEC 2024 · last seen DEC 2024
IN KING COUNTY77 other plants share this one’s industry (Machine Shops; Turned Product; and Screw, Nut, and Bolt Manufacturing, NAICS 3327); 25 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: HARBOR ISLAND MACHINE WORKS, INC · JAN 2026
- Street address
- SAM.gov: 3431 11TH AVE SW · JAN 2026
- City
- SAM.gov: SEATTLE · JAN 2026
- State
- SAM.gov: WA · JAN 2026
- Coordinates
- Census geocoder: 47.571955516638,-122.349807142647 · JUL 2026
- Employees (band)
- DOL: 1-19 · DEC 2024
- Website
- SAM.gov: WWW.HARBORISLANDMACHINE.COM · JAN 2026
- CAGE code
- SAM.gov: 97997 · JAN 2026
- Retirement plan filing (Form 5500)
- DOL: 10 active participants, plan year ending 2024-12-31, 1 plan(s) · DEC 2024
- SAM registration expires
- SAM.gov: 2027-01-09 · JAN 2026
- State business registration
- WA SOS: HARBOR ISLAND MACHINE WORKS, INC., registered with the Washington Secretary of State; Corporation; active