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39 leading aerospace and defence companies in Connecticut

Tamtam tracks 39 aerospace and defence companies headquartered in Connecticut. This list ranks all of them by number of employees on LinkedIn, led by Pratt & Whitney, General Dynamics Electric Boat and ITT Inc.. Their median headcount is 406. Half of them were founded in 1956 or later. The most common headquarters are Farmington (3), Stamford (3) and Manchester (2).

๐Ÿ‡บ๐Ÿ‡ธ Connecticut39 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
Pratt & Whitneyrtx.com

Design and manufacture advanced propulsion systems for aircraft, enabling global connectivity, economic growth, and national defense.

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ East Hartford 30,378 n/a
2
General Dynamics Electric Boatgdeb.com

Design and build nuclear-powered submarines for the U.S. Navy, including Virginia-class and Columbia-class ballistic missile submarines.

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Groton 9,481 1899
3
ITT Inc.itt.com

A global technology company providing cutting-edge solutions in motion technologies, industrial process, and connect and control technologies across various industries worldwide

Industrial Machinery Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Stamford 9,330 n/a
4
Sikorskylockheedmartin.com

A global leader in helicopter technology, providing innovative and safe flight solutions for commercial and military markets worldwide since 1939

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Stratford 5,753 1923
5
Crane Companycraneco.com

Long-standing ethical business focused on innovation, disciplined management, strategic acquisitions, and creating value for customers, suppliers, and shareholders.

Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Stamford 4,696 1855
6
Hexcel Corporationhexcel.com

Production of carbon fiber reinforcements, resin systems, and honeycomb materials focused on lightweight solutions for commercial aerospace industry.

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Stamford 3,357 1948
7
United Technologiesrtx.com

Merger of aerospace and defense companies combining advanced technology and innovation to provide integrated solutions for global security and aviation.

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Farmington 2,724 n/a
8
Barnesbarnesaero.com

A company known for persistent ingenuity, pushing boundaries to help customers make valuable impacts in global markets

Industrial Machinery Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Bristol 2,125 1857
9
Hamilton Sundstrandhamiltonsundstrand.com

A global supplier of aerospace and industrial products, designing and manufacturing systems for aircraft and international space programs

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Windsor Locks 1,918 n/a
10
Barnes Aerospacebarnesaero.com

Global manufacturer of precision components and assemblies for turbine engines, airframes, and industrial gas turbines Also provides MRO services and aerospace aftermarket spare parts

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Windsor 1,645 n/a
11
RBC Bearingsrbcbearings.com

International manufacturer of precision bearings, specializing in highly technical and regulated products for industrial, aerospace, and defense markets Offers unique design solutions and exceptional quality

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Oxford 1,106 1919
12
Pursuit Aerospacepursuitaero.com

Global manufacturer of complex aircraft engine components with highly integrated processes and lean-focused production systems, committed to continuous improvement in quality

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Manchester 1,072 n/a
13
United States Department of the Air Forceaf.mil

This company is one of the three Military Departments in the US Department of Defense, encompassing the USAF and USSF

Military ๐Ÿ‡บ๐Ÿ‡ธ Washington 840 1947
14
Ensign-Bickford Aerospace & Defense Company (EBAD)ebad.com

Global leader in precision energetics systems and explosive solutions, offering customized hardware and systems solutions for aerospace and defense missions worldwide

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Simsbury 734 1836
15
UPCmaagkit.com

This company produces innovative products to simplify tasks and improve efficiency, such as advanced kitting systems and adjustable length position sensors

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Meriden 713 2008
16
The Lee Companytheleeco.com

A pioneer in miniature precision fluid control components for various industries, specializing in miniaturization and engineering expertise for cutting-edge fluid flow technology

Industrial Machinery Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Westbrook 588 1948
17
Precision Resource, Inc.precisionresource.com

A dynamic company specializing in fineblanking and finishing quality components for various industries, offering competitive salaries, benefits, and career opportunities

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Shelton 482 1947
18
Paradigm Precision

Precision manufacturer of gas turbine components for aerospace, marine, and power generation Core capabilities include laser services, precision machining, and innovative manufacturing methods

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Manchester 430 2011
19
Kaman Corporationkaman.com

A leading innovator in the aerospace industry, providing solutions to commercial and military customers worldwide, and serving as an industrial distributor and system consultant

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Bloomfield 407 1945
20
Hanwha Aerospace USAhanwhaaerospaceusa.com

Innovative aerospace and defense manufacturing company with a focus on continuous improvement, advanced engineering, and precision manufacturing for commercial and military applications

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Cheshire 406 n/a
21
Connecticut Spring & Stampingctspring.com

Engineering-driven manufacturer of springs, stampings, wire forms, and more for various industries worldwide with a strong focus on quality and customer satisfaction

Industrial Machinery Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Farmington 267 1939
22
Kamaticskamatics.com

Designing, testing, and manufacturing high-performing bearings, drive systems, and critical parts for various industries under demanding conditions Visit wwwkamancom/engineered for more information

Airlines and Aviation ๐Ÿ‡บ๐Ÿ‡ธ Bloomfield 264 1966
23
Mott Corporationmottcorp.com

Engineers and manufactures high-reliability filters and fluid flow products for medicine, computing, energy, and space exploration, offering custom designs.

Industrial Machinery Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Plainville 238 1959
24
O.F. Mossberg & Sons, Inc.mossberg.com

Established in 1919, this family-owned firearms manufacturer is known for its innovative designs and as the largest pump-action shotgun manufacturer worldwide

Sporting Goods Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ North Haven 206 1919
25
EDAC Technologieshanwhaaerospaceusa.com

Global leader in developing and producing complex aircraft components, offering welding services, precision mold design, and machine tool manufacturing Operates in 6 facilities

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Cheshire 181 n/a
26
Franklinfranklinproductsinc.com

A leading manufacturer providing innovative engineering solutions and products for the airline industry, focusing on aesthetics, ergonomics, and technology

Airlines and Aviation ๐Ÿ‡บ๐Ÿ‡ธ Torrington 172 1988
27
Altek Electronics, Inc. (a Cyient DLM Company)altekelectronics.com

A trusted electronic manufacturing services provider since 1972, offering PCB layout, assembly, chassis, control panels, and cable & harness assembly with certified quality standards

Appliances, Electrical, and Electronics Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Torrington 110 1972
28
HORST Engineeringhorstengineering.com

Contract manufacturer specializing in precision machined components for aerospace and high technology industries, offering services such as Swiss screw machining, turning, milling, and assembly

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ East Hartford 95 1946
29
Straton Industriesstraton.com

Certified contract manufacturer of molds, tools, dies & stampings with CNC machining, turning, grinding, EDM, welding, molding, stamping, serving various industries

Machinery Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Stratford 66 1961
30
Thinklogicalthinklogical.com

Manufacturing high-performance signal extension and switching products for secure video distribution systems and KVM matrix switches within defense and intelligence command centers.

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Milford 65 2003
31
Microbest, Inc.microbest.com

Precision machining company specializing in components for Firearms/Defense, Aerospace, Medical, Automotive, Business Machine, and Electronic Component markets with state-of-the-art equipment and skilled employees

Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Waterbury 64 1960
32
Projects, Inc.projectsinc.com

A precision machining company founded in 1959, providing parts for aerospace, industrial, and commercial applications, with expertise in instrumentation and Parts Manufacturer Approval

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Glastonbury 60 1959
33
Turbine Technologies, DBA Burke Aerospaceburkeaerospace.com

High-tech manufacturing company providing precision components and engineering services to Aerospace and Industrial Gas Turbine industries since 1963

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Farmington 37 1963
34
Component Engineers Incceiprecision.com

A second-generation family-owned company providing critical component design, development, and production for various industries with expertise in stamping, CNC machining, and assemblies

Industrial Machinery Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Wallingford 32 1980
35
Frank Roth Co., Inc.frankroth.com

This engineering and manufacturing firm offers process engineering, parts engineering, machining, welding, project management, inventory management, and quality control services

Industrial Machinery Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Stratford 18 n/a
36
Senior Aerospace Connecticutsenioraeroct.com

A leading manufacturer of complex flight safety critical aerospace components for aircraft engines, serving rotorcraft, turbine engine, and airframe segments

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Enfield 17 1956
37
Marion Manufacturing Company, Inc.marionmfg.net

A leader in metal stamping and precision components since 1946, delivering high-quality American-made products through innovation and customer-focused solutions

Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Cheshire 16 1946
38
Stellar Jetstellaraircraft.com

Innovative aerospace company developing first Hydrogen Powered Business Jet with VTOL capabilities, focusing on sustainability, safety, and cost-effective operations

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Westport 11 2021
39
Frasal Tool Co., Inc.frasaltool.com

Global supplier of precision components, aerospace tooling, complex assemblies, and fixtures, offering cost-effective engineering, project management, and manufacturing services for various industries

Machinery Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Newington 10 1972

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.

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