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Hardware manufacturers headquartered in Connecticut

Tamtam tracks 86 hardware manufacturers headquartered in Connecticut. This list ranks all of them by number of employees on LinkedIn, led by Xerox, Pratt & Whitney and Stanley Black & Decker, Inc.. Their median headcount is 361. Half of them were founded in 1963 or later. The most common headquarters are Stamford (10), Danbury (6) and Norwalk (4).

馃嚭馃嚫 Connecticut86 companiesUpdated Nov 2, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
Xeroxxerox.com

It provides innovative technology solutions for the workplace, focusing on print technology, software, services, and financial solutions for clients.

Business Consulting and Services 馃嚭馃嚫 Norwalk 47,247 n/a
2
Pratt & Whitneyrtx.com

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

Aviation and Aerospace Component Manufacturing 馃嚭馃嚫 East Hartford 30,378 n/a
3
Stanley Black & Decker, Inc.stanleyblackanddecker.com

Provider of tools, fasteners, and infrastructure systems supporting home repair, automotive security, construction, and energy industries with innovation and safety.

Manufacturing 馃嚭馃嚫 New Britain 29,460 n/a
4
Pitney Bowespitneybowes.com

Provides digital shipping solutions, mailing innovation, and financial services to businesses and government entities worldwide, simplifying mail and parcel sending.

Software Development 馃嚭馃嚫 Shelton 12,611 1920
5
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 馃嚭馃嚫 Stamford 9,330 n/a
6
Terex Corporationterex.com

A global manufacturing company focused on building essential machines, improving lives, volunteering, and maintaining a safe, inclusive work environment

Machinery Manufacturing 馃嚭馃嚫 Norwalk 8,109 1933
7
Hubbell Incorporatedhubbell.com

Manufacturer of utility and electrical solutions focused on grid modernization, clean energy, electrification, and energy efficiency worldwide.

Appliances, Electrical, and Electronics Manufacturing 馃嚭馃嚫 Shelton 7,655 1888
8
PerkinElmerperkinelmer.com

A global provider of technology and service solutions for measuring, quantifying, detecting, and reporting in various industries to ensure quality and safety

Biotechnology Research 馃嚭馃嚫 Shelton 6,485 1937
9
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 馃嚭馃嚫 Stratford 5,753 1923
10
Amphenolamphenol.com

A Fortune 500 manufacturer with 90,000 employees worldwide, providing key components for electronic devices and networks in daily use

Appliances, Electrical, and Electronics Manufacturing 馃嚭馃嚫 Wallingford 5,559 n/a
11
Crane Companycraneco.com

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

Manufacturing 馃嚭馃嚫 Stamford 4,696 1855
12
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 馃嚭馃嚫 Stamford 3,357 1948
13
Amphenol Communications Solutionsamphenol-cs.com

Design and manufacture innovative connectors and cable assemblies for communications, mobile, RF, optics, data centers, networking, industrial, and automotive applications.

Appliances, Electrical, and Electronics Manufacturing 馃嚭馃嚫 United States 3,169 1932
14
Barnesbarnesaero.com

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

Industrial Machinery Manufacturing 馃嚭馃嚫 Bristol 2,125 1857
15
Conair LLCconair.com

Design and manufacture of personal care, kitchen appliances, cookware, hair accessories, cosmetic and travel products sold globally.

Manufacturing 馃嚭馃嚫 Stamford 2,093 1959
16
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 馃嚭馃嚫 Windsor Locks 1,918 n/a
17
CooperSurgicalcoopersurgical.com

This company is focused on advancing women's, babies', and families' healthcare worldwide through products and services for reproductive solutions and gynecological care

Medical Equipment Manufacturing 馃嚭馃嚫 Trumbull 1,845 1990
18
Timex Grouptimexgroup.com

Design, manufacture, and market innovative watches globally under multiple renowned brands, employing over 3,000 people worldwide.

Manufacturing 馃嚭馃嚫 Middlebury 1,624 1854
19
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 馃嚭馃嚫 Oxford 1,106 1919
20
TRUMPF North Americatrumpf.com

Leading provider of sheet metal fabrication machinery and industrial lasers, focusing on innovative, networked manufacturing solutions in North America.

Machinery Manufacturing 馃嚭馃嚫 Farmington 987 1969
21
Dorel Sportsprivacy.ponbike.com

A global company within Dorel Industries, committed to helping consumers find their perfect ride through innovative cycling products in over 100 countries

Consumer Goods 馃嚭馃嚫 Wilton 825 n/a
22
Philip Morris International U.S.uspmi.com

Manufacturer and distributor of chewing tobacco, snus, cigars, nicotine pouches, matches, and lighters in the US market Operations based in Virginia and Kentucky

Manufacturing 馃嚭馃嚫 Stamford 740 1985
23
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 馃嚭馃嚫 Simsbury 734 1836
24
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 馃嚭馃嚫 Meriden 713 2008
25
OMEGA Engineeringdwyeromega.com

Supplier of over 165,000 products for measuring temperature, humidity, flow, level, and pressure Specializing in thermocouples, gauges, data loggers, heaters, and more

Appliances, Electrical, and Electronics Manufacturing 馃嚭馃嚫 Norwalk 699 1962
26
Ruger Firearmsruger.com

Manufactures rugged, reliable firearms for commercial sporting market with nearly 700 variations across 40 product lines, emphasizing responsibility.

Sporting Goods Manufacturing 馃嚭馃嚫 Southport 629 1949
27
Cannondalecannondale.com

Innovative bicycle company since 1971, focused on inspiring the world to ride and improving cycling through relentless innovation and global reach

Sporting Goods Manufacturing 馃嚭馃嚫 Wilton 611 1971
28
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 馃嚭馃嚫 Westbrook 588 1948
29
ASSA ABLOY Opening Solutions Americasassaabloydss.com

Provider of door opening products and access solutions for homes, businesses, and institutions, offering doors, hardware, locks, access control, and services

Construction Hardware Manufacturing 馃嚭馃嚫 New Haven 573 1994
30
GameChange Energygamechangeenergy.com

A manufacturer of solar racking systems, GameChange Solar offers fast installation, bankable quality, and high value through superior engineering and design

Renewable Energy Semiconductor Manufacturing 馃嚭馃嚫 Norwalk 542 2012
31
Davis-Standarddavis-standard.com

Global leader in extrusion and converting technology, offering innovative solutions across multiple industries with a focus on efficiency and sustainability

Machinery Manufacturing 馃嚭馃嚫 Pawcatuck 538 1848
32
Zygozygo.com

Global leader in designing and manufacturing advanced optical metrology systems, ultra-precise optical components, and assemblies for various industries worldwide

Measuring and Control Instrument Manufacturing 馃嚭馃嚫 Middlefield 513 1970
33
Siemonsiemon.com

A global industry leader in high-quality IT infrastructure solutions, specializing in cabling systems, data center power, and Intelligent Infrastructure Management

Telecommunications 馃嚭馃嚫 Watertown 508 1903
34
FuelCell Energyfuelcellenergy.com

Specializing in efficient, affordable, and clean energy solutions, this company designs, manufactures, and operates megawatt-scale fuel cell systems for utilities and industrial power users worldwide

Renewable Energy Power Generation 馃嚭馃嚫 Danbury 467 1969
35
Sperry Rail Inc.sperryrail.com

Global leader in Rail Health庐 solutions for over 90 years, focusing on improving safety and performance for railroads worldwide

Railroad Equipment Manufacturing 馃嚭馃嚫 Shelton 452 1928
36
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 馃嚭馃嚫 Bloomfield 407 1945
37
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 馃嚭馃嚫 Cheshire 406 n/a
38
Ashcroft Inc.ashcroft.com

Design and manufacture pressure and temperature instruments ensuring safety, efficiency, and performance in demanding industrial environments worldwide.

Automation Machinery Manufacturing 馃嚭馃嚫 Stratford 405 n/a
39
TapestryHealthtapestryhealth.com

A Connecticut-based healthcare organization specializing in providing technology solutions to post-acute care facilities, utilizing AI, vital signs management, chronic care management, and telemedicine services

Hospitals and Health Care 馃嚭馃嚫 Stratford 400 2017
40
ROM Technologies, Inc.romtech.com

Developer of patented medical technology for knee and hip rehabilitation, facilitating 50% faster recovery and cost savings for patients, medical facilities, and payors

Medical Equipment Manufacturing 馃嚭馃嚫 Brookfield 374 n/a
41
Dymaxdymax.com

This company develops eco-friendly light-curable materials, dispense equipment, and UV/LED light-curing systems for OEMs in various major markets

Chemical Manufacturing 馃嚭馃嚫 Torrington 373 n/a
42
HarcoSemcoharcosemco.com

An innovative manufacturer of advanced aerospace products, offering customizable solutions and outstanding customer service, with over 65 years of experience

Aviation and Aerospace Component Manufacturing 馃嚭馃嚫 Branford 361 1951
43
ARKA Group, LParka.org

Provides world-leading technologies and services for warfighters, including advanced optical technologies, ground processing, analytics, and next-generation space solutions, with 60-year legacy.

Defense and Space Manufacturing 馃嚭馃嚫 Danbury 361 n/a
44
Infiltrator Water Technologies (Decentralized Wastewater Treatment Solutions)infiltratorwater.com

Leading manufacturer of innovative and environmentally-friendly wastewater treatment solutions, utilizing recycled plastics to protect the environment for over 35 years

Manufacturing 馃嚭馃嚫 Old Saybrook 357 1987
45
Softdelsoftdel.com

A global company specializing in connecting devices, enterprises, and people in smart buildings and factories, offering technology-driven solutions for digital challenges

Technology, Information and Internet 馃嚭馃嚫 Stamford 343 1999
46
STANLEY Access Technologiesstanleyaccess.com

A leading provider of tough, dependable automatic door openings with a focus on innovation, engineering, installation, and service in North America

Wholesale Building Materials 馃嚭馃嚫 Farmington 336 n/a
47
Colt's Manufacturing Company LLCcolt.com

American firearms manufacturer specializing in mass production, parts interchangeability, supplying civilian, military, and law enforcement customers worldwide.

Sporting Goods Manufacturing 馃嚭馃嚫 West Hartford 316 1836
48
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 馃嚭馃嚫 Plainville 238 1959
49
Roscous.rosco.com

A leading manufacturer of lighting filters, gobos, scenic paints, LED fixtures, fog machines, and dance floors for the entertainment industry worldwide

Entertainment Providers 馃嚭馃嚫 Stamford 236 1910
50
HyAxiom, Inc.hyaxiom.com

Global provider of fuel cell and hydrogen solutions for industrial and commercial use, focusing on sustainable energy with expertise in fuel cell development and hydrogen production

Renewable Energy Equipment Manufacturing 馃嚭馃嚫 South Windsor 229 2014
51
Cuisinartcuisinart.com

This company specializes in providing innovative culinary tools and appliances to help people savor the good life in the kitchen

Manufacturing 馃嚭馃嚫 Stamford 219 1971
52
Carling Technologiescarlingtech.com

A global leader in circuit protection, switching, and power distribution, providing innovative solutions for various industries to ensure safety and reliability

Manufacturing 馃嚭馃嚫 Plainville 210 1920
53
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 馃嚭馃嚫 North Haven 206 1919
54
Rollease Acmedarolleaseacmeda.com

Innovator of window covering hardware systems, specialized fabrics, and automated shade solutions, delivering enhanced technologies and exceptional service to trade customers

Manufacturing 馃嚭馃嚫 Stamford 202 1980
55
U.S. Electrical Services, Inc.usesi.com

A leading electrical wholesale distributor with 14 regional businesses offering a wide range of products from 1,000 manufacturers across 146 locations

Wholesale 馃嚭馃嚫 Middletown 199 2006
56
Precision Fuzing and Sensorskaman.com

A division of Kaman Aerospace Group specializing in fuzing, measuring, and memory systems for military, aerospace, and industrial applications worldwide

Defense and Space Manufacturing 馃嚭馃嚫 Middletown 196 1945
57
Quantum-Siquantum-si.com

Revolutionizing protein sequencing for all scientists, Quantum-Si empowers deeper biologic discovery to enhance human health with innovative technology

Biotechnology Research 馃嚭馃嚫 Branford 186 2013
58
Applied Physical Sciences Corp (APS)aphysci.com

APS is a research and development company specializing in physics-based technology solutions for national security and commercial markets, focused on integrity and innovation

Defense and Space Manufacturing 馃嚭馃嚫 Groton 181 2002
59
The Robert E. Morris Companyrobertemorris.com

Provider of advanced machine tools and engineering services in New England, helping manufacturers improve productivity and create quality parts efficiently

Machinery Manufacturing 馃嚭馃嚫 Windsor 102 1941
60
Curtis Packagingcurtispackaging.com

A leading provider of luxury packaging solutions, specializing in high quality folding cartons for global brands with a focus on sustainability and innovation

Packaging and Containers Manufacturing 馃嚭馃嚫 Sandy Hook 92 1845
61
Coburn Technologies, Inc.coburntechnologies.com

The company designs, manufactures, and services optical lens processing systems, supplies for prescription lenses, and ophthalmic diagnostic machines with a focus on customer service

Machinery Manufacturing 馃嚭馃嚫 South Windsor 90 1954
62
Coherent | Nufernnufern.com

The company is dedicated to creating high-quality solutions that meet and exceed customer expectations through technology and expertise

Telecommunications 馃嚭馃嚫 East Granby 80 n/a
63
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 馃嚭馃嚫 Milford 65 2003
64
ATMIatmi.com

Global leader in process solutions for semiconductor and life science industries, developing innovative technologies and solutions to meet high-tech marketplace needs Engaging culture and rewarding performance

Semiconductor Manufacturing 馃嚭馃嚫 Danbury 65 1986
65
New England Airfoil Products Inc.newenglandairfoilproductsinc.com

A leading aerospace manufacturer with over 65 years of experience, specializing in airfoils and related products for civil and defense sectors worldwide

Aviation and Aerospace Component Manufacturing 馃嚭馃嚫 Farmington 61 1955
66
Alpha Q, Inc.alphaqinc.com

Industry leading precision machining of magnesium and light alloy components for gas turbine and aerospace industries with expertise in tight tolerance machining and assembly

Aviation and Aerospace Component Manufacturing 馃嚭馃嚫 Colchester 49 1964
67
Light Sources Inc.light-sources.com

Global OEM lamp design and manufacturing company with state-of-the-art technology, offering UV germicidal lamps, low pressure tanning lamps, and specialty lighting solutions worldwide

Appliances, Electrical, and Electronics Manufacturing 馃嚭馃嚫 Orange 47 1983
68
Novanta IMSnovantaims.com

Manufacturer of motors and motion control systems, specializing in integrated motor technology to provide reduced size, cost, and maintenance for various applications

Automation Machinery Manufacturing 馃嚭馃嚫 Marlborough 43 1986
69
Numet LLCkineticengines.com

A contract manufacturer specializing in precision machined components made from exotic alloys for aerospace and defense industries, with key certifications

Aviation and Aerospace Component Manufacturing 馃嚭馃嚫 Orange 34 1984
70
Eschenbach Optik of America, Inc.eschenbach.com

Provider of high-quality magnification devices for low vision care providers, individuals with vision problems, and industries requiring precision inspection and quality control

Medical Equipment Manufacturing 馃嚭馃嚫 Danbury 32 1983
71
NE-XT Technologiesne-xtusa.com

Manufacturer of precision-machined components and assemblies for aerospace, defense, and industrial OEMs, utilizing innovative processes and over 100 CNC machines

Manufacturing 馃嚭馃嚫 Windsor 31 1988
72
Baumuellerbaumuller.com

A leading manufacturer of innovative automation solutions for various industries, offering drive technology, high torque motors, application engineering, repair services, and field support globally

Automation Machinery Manufacturing 馃嚭馃嚫 Windsor 30 n/a
73
Colt's Plastics Company, Inc.coltsplastics.com

A Connecticut-based plastics company specializing in manufacturing and distributing various plastic products

Plastics Manufacturing 馃嚭馃嚫 Dayville 26 n/a
74
Leipold, Inc.leipold.com

Precision turning company with 45 skilled employees, part of a family-owned group with 450+ employees, specializing in high-quality, close-tolerance components for various industries globally

Mechanical Or Industrial Engineering 馃嚭馃嚫 Windsor 25 1998
75
PMC-STS, Inc.pmc1.com

Specializing in innovative, custom-designed pressure transmitters, level sensors, and transducers with patented flush sensor technology for over 50 years

Appliances, Electrical, and Electronics Manufacturing 馃嚭馃嚫 Danbury 24 1963
76
Avanti Systems USAavantisystemsusa.com

Avanti Systems USA offers European-style glass designs for modern spaces, including frameless walls, sliding doors, and innovative features like color-changing LCD glass

Wholesale Building Materials 馃嚭馃嚫 Greenwich 23 2003
77
ProMATIC Automation, an AGR companypromaticautomation.com

Provider of custom industrial automation services and equipment, with expertise in designing and building manufacturing lean cells and fully automated assembly equipment

Automation Machinery Manufacturing 馃嚭馃嚫 Bristol 16 2000
78
Wieland Dental Systems Inc.Wieland-Dental-Systems.com

A leading German company specializing in dental prosthetics, restorative materials, and CAD/CAM digital technology, with a focus on innovation and global distribution

Medical Equipment Manufacturing 馃嚭馃嚫 Danbury 12 1871
79
wonderful dentalwonderfuldental.com

Manufacturer of dental products including fluoride varnish, prophy paste, angles, and brushes Offers direct ordering to save costs and increase quality Request free samples at wonderfuldentalcom

Medical Equipment Manufacturing 馃嚭馃嚫 Bloomfield 10 2016
80
Delta-Ray Industries, Inc.delta-ray.com

A leading manufacturer specializing in precision machining of high-value exotic materials for aerospace, military, oil, and commercial industries with a focus on customer satisfaction

Aviation and Aerospace Component Manufacturing 馃嚭馃嚫 Bridgeport 10 n/a
81
Sustainable Building Systemssbsusainc.com

Innovative company specializing in cutting edge building solutions, offering state-of-the-art steel framing systems and thermal insulation for energy efficient construction projects

Construction 馃嚭馃嚫 East Windsor 8 n/a
82
Cooper Split Roller Bearingcooperbearings.com

Manufacturing and distributing split roller bearings for machinery applications from their location in Norfolk, VA, United States

Machinery Manufacturing 馃嚭馃嚫 Norfolk 8 n/a
83
Mastercraft Tool and Machine Companymastercrafttool-mach.com

Specializes in producing metal stampings and progressive tooling for various industries

Appliances, Electrical, and Electronics Manufacturing 馃嚭馃嚫 Southington 6 n/a
84
HAWK INTEGRATED PLASTICS LLChawkiplas.com

Specializing in precision injection molding, the company offers high-quality manufacturing solutions with expertise in efficient and accurate injection molding processes

Plastics Manufacturing 馃嚭馃嚫 Columbia 4 n/a
85
HondoGO, a Hondius Energy Companyhondogo.com

A pioneering company accelerating electric vehicle adoption by owning and operating fast-charging infrastructure for individuals, fleets, and businesses through disruptive technology and partnerships

Renewable Energy Power Generation 馃嚭馃嚫 Stamford 3 n/a
86
Anastasio Homeanastasiohome.com

Manufacturer of limited production home accessories and upcycled luxury goods, founded by an ex-luxury watch executive aiming to support craftspeople worldwide

Retail 馃嚭馃嚫 Torrington 2 2021

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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 Nov 2, 2026.

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