Hart Industrial Unions LLC

What they make

• copper tubing
• engineering design
• prototyping
• training

NAMED ON THE COMPANY’S OWN WEBSITE, READ JUL 29, 2026

Where it is

Other plants nearby

Facility	City	Industry	Status	Distance
FCFluid Connectors New Britain	New Britain	Industrial Valve Manufacturing 332911	◐ LIKELY ACTIVE	5.0 KM
LPLyman Products CORP	Middletown	All Other Fabricated Metal Product Manufacturing 332995	◐ LIKELY ACTIVE	4.2 KM
CRCorbin Russwin	Berlin	Hardware Manufacturing 332510	● ACTIVE	5.2 KM
Intelligent Cutting Solutions, LLC	Newington	All Other Miscellaneous Fabricated Metal Product Manufacturing 332999	● ACTIVE	6.0 KM
Allied Machining Co., INC.	Newington	Machine Shops 332710	● ACTIVE	6.0 KM

Every listed plant in Capitol County

Also at this address

No other federal record shares this street address.

Where this record comes from

4 sources hold this plant, and 12 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 websiteOPERATING
  first seen JUL 2026 · last seen OCT 2026
• SAM.gov entity registrationOPERATING
  Record LYMNZBK637N8 · first seen JAN 2026 · last seen JAN 2026
• Connecticut Secretary of the State business registryOPERATING
  Record CT:001t000000WnXIoAAN · first seen JAN 2026 · last seen JAN 2026
• SBA Paycheck Protection Program loan recordsEXISTENCE
  Record CT|berlin|870a four rod rd · first seen APR 2020 · last seen APR 2020

IN CAPITOL COUNTY60 other plants share this one’s industry (Other Fabricated Metal Product Manufacturing, NAICS 3329); 26 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: HART INDUSTRIAL UNIONS LLC · JAN 2026

Street address

SAM.gov: 870 FOUR ROD RD · JAN 2026

City

SAM.gov: BERLIN · JAN 2026

State

SAM.gov: CT · JAN 2026

Coordinates

Census geocoder: 41.605252072859,-72.762247750371 · JUL 2026

Employees (band)

SBA PPP: 1-19 · APR 2020

Website

SAM.gov: https://www.hartindustries.com · JAN 2026

Year established

Company website: 1985 · AUG 2026

CAGE code

SAM.gov: 7BA07 · JAN 2026

PPP loan

SBA PPP: PPP loan x1, approved 2020-04-28, 10 jobs reported · APR 2020

SAM registration expires

SAM.gov: 2027-01-15 · JAN 2026

State business registration

CT SOTS: HART INDUSTRIAL UNIONS LLC, registered with the Connecticut Secretary of the State; Limited liability company; formed 2010-05-25; active, annual report filed 2026-01-05 · JAN 2026