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Concentric Tool and Manufacturing Company

550 Spring St, Naugatuck, CT 06770

LIKELY ACTIVELAST SEEN IN FEDERAL DATA DEC 2025 · 4 SOURCES

Operating signal within 24 months, or from a single source.

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What they make

Ball and Roller Bearing Manufacturing332991

Where it is

41.51328, -73.05922 · CENSUS TIGER
COUNTY
METRO AREA
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Other plants nearby

FacilityCityIndustryStatusDistance
Kammetal INC.NaugatuckAll Other Miscellaneous Fabricated Metal Product Manufacturing
332999
ACTIVE1.9 KM
Wces INCWaterburyAll Other Miscellaneous Fabricated Metal Product Manufacturing
332999
ACTIVE3.2 KM
Dexmet Corporation - NaugatuckNaugatuckRolled Steel Shape Manufacturing
331221
UNVERIFIED3.5 KM
White Welding Company, INC.WaterburyAll Other Miscellaneous Fabricated Metal Product Manufacturing
332999
LIKELY ACTIVE5.0 KM
Prospect Machine Products, INCProspectForging and Stamping
332116
LIKELY ACTIVE4.6 KM

Every listed plant in Naugatuck Valley County

Also at this address

1 other record shares this street address. Separate filings can describe distinct businesses on one site, or the same plant recorded by different agencies, so every record is kept rather than merged away.

Multi Metal Manufacturing
Naugatuck, CT
REPORTED CLOSED332721

Where this record comes from

4 sources hold this plant, and 6 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.

  • OSHA injury and illness reportsOPERATING
    Record 1255554 · first seen DEC 2025 · last seen DEC 2025
  • Connecticut Secretary of the State business registryOPERATING
    Record CT:001t000000WmXbaAAF · first seen OCT 2025 · last seen OCT 2025
  • DOL Form 5500 retirement plan filingsOPERATING
    Record 061032798|CT|06770|550 spring st · first seen DEC 2024 · last seen DEC 2024
  • SBA Paycheck Protection Program loan recordsEXISTENCE
    Record CT|naugatuck|550 spring st · first seen MAR 2021 · last seen MAR 2021

IN NAUGATUCK VALLEY COUNTY22 other plants share this one’s industry (Other Fabricated Metal Product Manufacturing, NAICS 3329); 14 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.

Coordinates
Census geocoder: 41.513277837254,-73.05921778419 · JUL 2026
Employees (band)
OSHA: 20-99 · DEC 2025
Year established
CT SOTS: 1980 · NOV 1980
Retirement plan filing (Form 5500)
DOL: 22 active participants, plan year ending 2024-12-31, 1 plan(s) · DEC 2024
PPP loan
SBA PPP: PPP loan x3, approved 2021-03-18, 22 jobs reported · MAR 2021
State business registration
CT SOTS: CONCENTRIC TOOL & MANUFACTURING COMPANY, INC., registered with the Connecticut Secretary of the State; Corporation; formed 1980-11-10; active, annual report filed 2025-10-12 · OCT 2025

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