Connecticut boasts a vibrant network of contract manufacturing companies that specialize in producing components and assemblies for various industries. From medical devices to aerospace and electronics, these firms leverage advanced technologies, ensuring quality and precision in their outputs. With a strong emphasis on innovation and compliance with stringent regulations, the sector is positioned for growth, particularly as industries increasingly prioritize rapid prototyping and supply chain solutions. As global manufacturing trends evolve, Connecticut's companies are embracing automation and Lean practices, aiming to enhance operational efficiencies, which can redefine their competitive advantage in the contract manufacturing landscape.

The showcased companies represent a cross-section of Connecticut's contract manufacturing sector, with sizes ranging from small teams to hundreds of employees. Established between the 1930s and 2000s, these firms are spread across localities like Danbury, Windsor, and Brookfield. Specialties vary from PCB assembly and metal stamping to cleanroom fabrication, indicating a robust skill set catering to numerous industries. Each organization adheres to rigorous quality standards, reflecting their commitment to excellence and safety in manufacturing. Together, they showcase the strength of Connecticut's specialized manufacturing capabilities.

Read on to explore the top contract manufacturing companies in Connecticut.

Top 19 Contract Manufacturing Companies in Connecticut

1. Imperial Electronic Assembly

• Website: impea.com
• Ownership type: Family Owned
• Headquarters: Brookfield, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1989
• Headcount: 201-500
• LinkedIn: imperial-electronic-assembly-inc-

Imperial Electronic Assembly, based in Brookfield, Connecticut, is a family-owned electronic contract manufacturer established in 1989. With a workforce of approximately 201-500 employees, the company has built a solid reputation for its high-quality manufacturing services. They specialize in PCB assembly, cable assembly, and electro-mechanical services, serving a variety of sectors including medical devices, military applications, telecommunications, and energy. Imperial prides itself on its customer-centric approach, emphasizing strong relationships and collaborative engineering support. The company operates from a modern 45,000 square foot facility, equipped with state-of-the-art technology to ensure efficient production processes. Their commitment to quality is underscored by certifications such as ISO 9001:2015 and AS9100D:2016, which reflect their adherence to rigorous industry standards. Imperial's focus on continuous improvement and innovation positions them well within the contract manufacturing industry.

2. Accutron

• Website: accutroninc.com
• Ownership type: Corporate
• Headquarters: Windsor, Connecticut, United States (USA)
• Employee distribution: India 62%, United States (USA) 38%
• Latest funding: August 2016
• Founded year: 1989
• Headcount: 51-200
• LinkedIn: accutron-inc-

Accutron Inc., based in Windsor, Connecticut, is a contract manufacturer that specializes in electronic printed circuit board assembly. Founded in 1989, the company has been providing a range of services including Surface Mount Technology (SMT) Assembly, Thru-Hole Assembly, and Box Build Assembly. Accutron primarily serves clients in the military, commercial, and medical electronics sectors, focusing on delivering high-quality manufacturing solutions tailored to the specific needs of its customers. The company operates from a 55,000 square foot facility and employs approximately 98 skilled technicians. Accutron is committed to quality assurance and adheres to industry standards, including ITAR compliance. Recently, Accutron became part of Foxtronics EMS, which broadens its capabilities and enhances its position in the electronics manufacturing industry. This partnership is expected to provide new opportunities for growth and innovation in their service offerings.

3. Scott Electrokrafts, Inc.

• Website: scottelectro.com
• Ownership type: Private
• Headquarters: Andover, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1967
• Headcount: 11-50
• LinkedIn: scott-electrokrafts-inc.

Scott Electrokrafts, Inc., based in Andover, Connecticut, has been a player in the contract manufacturing industry since its inception in 1967. The company specializes in electronic and electromechanical assemblies, offering services that include PC board assembly, cable and harness assembly, and system integration. Their clientele spans critical sectors such as military, aerospace, and medical equipment, reflecting their capability to meet stringent industry requirements. Scott Electrokrafts prides itself on its quality assurance processes, ensuring that all products meet high standards, including IPC-A-610 Class 2 or 3 for PC board assemblies. The company operates with a dedicated team that emphasizes customer service, providing flexibility to adapt to design changes and urgent requests. Their commitment to quality and customer satisfaction has positioned them as a reliable partner for OEMs looking for contract manufacturing solutions.

4. TOMZ Corporation

• Website: tomz.com
• Ownership type: Family Owned
• Headquarters: Berlin, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1988
• Headcount: 201-500
• LinkedIn: tomz-corporation

TOMZ Corporation, established in 1988, is a family-owned medical device manufacturer based in Berlin, Connecticut. The company specializes in contract manufacturing and design services specifically for original equipment manufacturers (OEMs) in the medical field. With a workforce of approximately 139 employees, TOMZ operates three facilities located in Connecticut, Indiana, and Minnesota. Their manufacturing capabilities include a comprehensive approach to design for manufacturability, ensuring that every stage of the production cycle is optimized for efficiency and quality. TOMZ is committed to maintaining high standards, as evidenced by their FDA registration and ISO 13485:2016 certification. The company prides itself on its ability to scale operations and respond to the needs of its clients, which is crucial in the fast-paced medical device industry. Their focus on innovation and quality control positions them as a reliable partner for medical device OEMs, contributing positively to patient care and outcomes.

5. Tornik, LLC

• Website: tornik.com
• Ownership type: Private
• Headquarters: East Hartford, Connecticut, United States (USA)
• Founded year: 1990
• Headcount: 51-200
• LinkedIn: tornik-llc

Tornik, LLC, based in East Hartford, Connecticut, is an electronic manufacturing company that specializes in custom cable assemblies, harness assemblies, and electromechanical assemblies. Founded in 1990, Tornik has built a reputation for providing high-quality manufacturing services to various industries, including medical devices, aerospace, and telecommunications. The company operates with a strong emphasis on quality, being ISO 9001:2015 and ISO 13485:2016 registered, and adheres to IPC 620 standards. Tornik's manufacturing processes include 100% computerized testing, ensuring that each assembly meets stringent quality requirements. With a dedicated engineering team, Tornik offers comprehensive program support services, assisting clients from the design phase through to production. The company has expanded its operations to include a facility in Tijuana, Mexico, allowing for cost-effective manufacturing solutions while maintaining high standards. Tornik's commitment to customer satisfaction and its long-term relationships with clients, including Fortune 500 companies, underscore its reliability and expertise in the contract manufacturing industry.

6. Chapco, Inc

• Website: chapcoinc.com
• Ownership type: Family Owned
• Headquarters: Chester, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1964
• Headcount: 51-200
• LinkedIn: chapcoinc

Chapco, Inc. is a family-owned manufacturing company based in Chester, Connecticut, specializing in high-performance sheet metal fabrication and contract manufacturing. Founded in 1964, Chapco has developed a strong presence in various industries, including aerospace, automotive, and medical. The company prides itself on delivering tailored solutions that meet specific production needs, emphasizing precision and engineering excellence. With a workforce of 51-200 employees, Chapco operates from two state-of-the-art facilities totaling 70,000 square feet. Their capabilities include precision CNC machining, contract assembly, and end-to-end services, which allow them to support clients from prototype to production. Chapco's commitment to quality and customer service is evident in their partnerships with businesses, helping to enhance manufacturing processes and improve overall efficiency.

7. Kimchuk, INC.

• Website: kimchuk.com
• Ownership type: Private
• Headquarters: Danbury, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1964
• Headcount: 51-200
• LinkedIn: kimchuk

Kimchuk, INC. is an electronic manufacturer based in Danbury, Connecticut, specializing in contract manufacturing and engineering design services. Established in 1964, the company has built a strong foundation in the electronic manufacturing community, offering a comprehensive range of services that include PCB assembly, mechanical assembly, and testing services. Their clientele primarily consists of military and telecom organizations, which require high-quality electronic components and assemblies. Kimchuk is committed to customer satisfaction and quality assurance, operating under the AS9100 certification, which underscores their adherence to rigorous quality management standards. The company has invested in advanced technologies, such as the PILOT V8 NEXT flying probe tester, to enhance their testing capabilities and ensure reliability in their product offerings. With a workforce of around 80 employees, Kimchuk continues to be a relevant player in the contract manufacturing sector, focusing on innovative solutions and efficient project execution.

8. OSDA Printed Circuit Board Assembly

• Website: osda.com
• Ownership type: Corporate
• Headquarters: Milford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: October 2022
• Founded year: 1987
• Headcount: 11-50
• LinkedIn: osda

OSDA Printed Circuit Board Assembly, based in Milford, Connecticut, is an electronics assembly company that has been operational since 1987. Specializing in rapid prototyping and manufacturing services, OSDA caters to a variety of industries, including Medical, Robotics, and Military & Defense. The company prides itself on its ability to deliver quick turnaround times and high-quality assembly solutions, making it a reliable partner for businesses that require precision in electronic components. With a workforce of 11-50 employees, OSDA has maintained a strong presence in the contract manufacturing sector, leveraging state-of-the-art technology and a commitment to quality. Their ISO 13485:2016 and 9001:2015 certifications reflect their dedication to maintaining high standards in their operations. OSDA's history of servicing both startups and Fortune 500 companies showcases their adaptability and expertise in handling projects of varying scales and complexities.

9. Carlton Industries Corporation (CIC)

• Website: cicems.com
• Ownership type: Private
• Headquarters: Hamden, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1994
• Headcount: 11-50
• LinkedIn: carlton-industries-corporation

Carlton Industries Corporation (CIC), founded in 1994 and located in Hamden, Connecticut, is a private electronics manufacturer that specializes in printed circuit board assembly (PCBA) and box build assembly. With a workforce of 11 to 50 employees, CIC serves a variety of sectors, including industrial, aerospace, and medical industries. The company prides itself on delivering high-quality manufacturing services tailored to the unique needs of its clients. CIC operates under stringent quality standards, holding certifications such as ISO 9001, AS 9100, and ISO 13485, which reflect its commitment to excellence in manufacturing. Their services also include cable and harness assembly, quality control and testing, and inventory management, ensuring comprehensive support for their customers' manufacturing needs. CIC's focus on U.S.-based production allows for reduced lead times and shipping costs, enhancing the value they provide to their clients.

10. Gregor Technologies, LLC

• Website: gregortech.com
• Ownership type: Private
• Headquarters: Torrington, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1989
• Headcount: 1-10
• LinkedIn: gregor-technologies-llc

Gregor Technologies, LLC, based in Torrington, Connecticut, is a contract manufacturing firm established in 1989. The company specializes in contract assembly, sheet metal fabrication, and CNC machining, serving clients in military, commercial, and scientific instrument sectors. With a manufacturing facility spanning 70,000 square feet, Gregor Technologies offers comprehensive project management services, ensuring that client specifications are met with precision. Their advanced CNC machining capabilities include both 3-Axis and 5-Axis milling, as well as CNC turning, allowing them to handle a variety of complex manufacturing tasks. The company emphasizes quality through rigorous inspection processes, utilizing state-of-the-art equipment like a fully programmable CMM and laser inspection systems. This focus on quality and customer service positions Gregor Technologies as a reliable partner for businesses seeking tailored manufacturing solutions.

11. Wanho Mfg LLC

• Website: wanho.com
• Ownership type: Private
• Headquarters: Cheshire, Connecticut, United States (USA)
• Employee distribution: United States (USA) 90%, Singapore 10%
• Founded year: 2004
• Headcount: 501-1000
• LinkedIn: wanho-mfg-llc

Wanho Mfg LLC, founded in 2004 and based in Cheshire, Connecticut, is a manufacturing company that specializes in telecom equipment and metal fabrication. With a workforce of approximately 20 employees, the company provides OEM manufacturing and value-added services tailored to the telecom and manufacturing sectors. Their offerings include tool and die design, metal and plastic fabrication, and heavy steel fabrication. Wanho also emphasizes operational efficiency through services like customized kitting and assembly, cable rerolling, and testing. Their commitment to quality assurance, health and safety, and sustainability reflects a responsible approach to manufacturing. With a significant portion of their operations based in the United States and a smaller presence in Singapore, Wanho is positioned to serve a global clientele effectively.

12. Forum Contract Manufacturing

• Website: forumcm.com
• Ownership type: Private
• Headquarters: Waterbury, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1992
• Headcount: 51-200
• LinkedIn: forum-plastics-llc

Forum Contract Manufacturing, based in Waterbury, Connecticut, is a contract manufacturer specializing in cleanroom assembly and injection molding services. Founded in 1992, the company has over 30 years of experience in the industry, catering to both startups and established firms across the medical, industrial, and military sectors. Forum is known for its rapid prototyping capabilities, which allow clients to accelerate product development while ensuring compliance with industry standards. The company operates an ISO Class 7 certified cleanroom, producing between 100,000 to 200,000 parts monthly. Their services include a range of advanced manufacturing techniques such as micro molding, insert and over molding, and various secondary operations like pad printing and laser marking. Forum also emphasizes engineering support and project management, particularly for startups, offering financing options for tooling to help bring innovative products to market efficiently.

13. Synectic Medical Product Development (A MACK Molding Company)

• Website: synectic.net
• Ownership type: Corporate
• Headquarters: Woodbridge, Connecticut, United States (USA)
• Latest funding: July 2013
• Founded year: 1981
• Headcount: 11-50
• LinkedIn: synectic-medical-product-development

Synectic Medical Product Development, a subsidiary of Mack Molding, is a product development firm based in Woodbridge, Connecticut. Established in 1981, the company has carved out a niche in engineering services tailored for medical devices, electronics, and consumer products. Their offerings include a full spectrum of services, from initial product strategy and design to prototyping and manufacturing. This integrated approach helps clients navigate the complexities of product development, ensuring that their innovations are market-ready. Synectic's expertise is particularly pronounced in the medical device sector, where they adhere to stringent quality and regulatory standards, evidenced by their ISO 13485 certification. The company prides itself on its ability to deliver tailored solutions, emphasizing quality assurance and transparent communication throughout the development process. With a team of experienced engineers and a commitment to client satisfaction, Synectic has built a reputation for reliability and innovation in product development.

14. The Cly-Del Manufacturing Company

• Website: cly-del.com
• Ownership type: Family Owned
• Headquarters: Waterbury, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1939
• Headcount: 51-200
• LinkedIn: clydel-manufacturing

The Cly-Del Manufacturing Company, based in Waterbury, Connecticut, is a family-owned contract manufacturer specializing in precision metal stamping and product development. Established in 1939, the company has built a strong reputation for delivering high-quality metal components to a variety of industries, including agriculture, defense, energy, and technology. With a workforce of approximately 140 skilled employees and a facility spanning 200,000 square feet, Cly-Del produces over 3.5 billion parts annually. Their services include transfer press stamping, progressive stamping, compound die stamping, and cupping, all supported by a robust engineering and quality assurance framework. Cly-Del's commitment to innovation and sustainability is reflected in their proactive approach to community engagement and environmental responsibility, ensuring they remain a relevant player in the contract manufacturing space.

15. Hobson & Motzer, Inc.

• Website: hobsonmotzer.com
• Ownership type: Corporate
• Headquarters: Durham, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: August 2024
• Founded year: 1912
• Headcount: 201-500
• LinkedIn: hobson-%26-motzer-inc.

Hobson & Motzer, Inc. is a precision manufacturer based in Durham, Connecticut, with a history dating back to 1912. The company specializes in producing high-quality metal components and assemblies, primarily serving the medical device market and advanced industries. With a workforce of approximately 115 employees, Hobson & Motzer operates two manufacturing facilities totaling 125,000 square feet. Their capabilities include precision metal stamping, CNC machining, tooling design, and assembly, all performed in-house to ensure quality control. The company is known for its innovative approach, often tackling complex projects that others may deem impossible. Their commitment to quality is underscored by their ISO 13485 certification, which is crucial for maintaining standards in the medical device industry. Hobson & Motzer has built a reputation for reliability and precision, making them a go-to partner for businesses requiring intricate and high-tolerance components.

16. Avna

• Website: okayind.com
• Ownership type: Private
• Headquarters: New Britain, Connecticut, United States (USA)
• Latest funding: Other (Grant), $100,000, September 2021
• Founded year: 1911
• Headcount: 201-500
• LinkedIn: okay-industries

Avna, formerly known as OKAY Industries, is a medical device manufacturer based in New Britain, Connecticut. Established in 1911, the company specializes in precision components and subassemblies tailored for OEMs in the medical sector. Avna offers a wide array of manufacturing services, including stamping, machining, and laser processing, which are essential for the production of high-quality medical devices. The company prides itself on its collaborative approach, working closely with clients to ensure that their products meet the highest standards of quality and compliance. Avna's facilities span over 190,000 square feet and include advanced technologies for prototyping and process development. Their expertise extends to various medical applications, including surgical instruments and implantable devices, making them a trusted partner for companies in the medical device industry.

17. Stewart EFI, LLC

• Website: stewartefi.com
• Ownership type: Private
• Headquarters: Thomaston, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1936
• Headcount: 201-500
• LinkedIn: stewart-efi-llc

Stewart EFI, LLC, based in Thomaston, Connecticut, is a manufacturing company that specializes in precision metal stamping and contract manufacturing. Founded in 1936, the company has built a reputation for delivering high-quality metal components across various industries, including automotive, medical, and military. They offer a comprehensive range of services, including deep drawn components, progressive die stampings, and engineering solutions. Stewart EFI is recognized for its commitment to quality, as evidenced by its ISO/TS 16949 certification, which underscores its dedication to meeting stringent industry standards. The company operates multiple manufacturing facilities, including locations in El Paso, Texas, and a joint venture in Hangzhou, China, allowing them to cater to a global clientele. Their focus on continuous improvement and lean manufacturing practices positions them as a reliable partner for businesses seeking precision and efficiency in their manufacturing processes.

18. RK Manufacturing

• Website: rkmcorp.com
• Ownership type: Private
• Headquarters: Danbury, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1978
• Headcount: 51-200
• LinkedIn: rk-manufacturing

RK Manufacturing, based in Danbury, Connecticut, has been a player in the medical device manufacturing sector since its inception in 1978. The company specializes in contract manufacturing and clean room assembly services, primarily serving businesses in the medical device industry. Their product offerings include custom machinery tailored for suture applications and precision machining services. RK Manufacturing prides itself on its quality-focused approach, ensuring that all products are manufactured in a state-of-the-art clean room environment. The company is equipped with a 15,000 square foot ISO Class 8 clean room, which is crucial for maintaining the stringent standards required in medical device production. With a team of experienced engineers, RK Manufacturing is involved in the design and development phases of medical devices, providing valuable insights and rapid prototyping capabilities. Their commitment to quality is further underscored by their certifications, including ISO 13485 and FDA registration, which are essential for compliance in the medical device sector.

19. NPI/Medical

• Website: npi-med.com
• Ownership type: Corporate
• Headquarters: Ansonia, Connecticut, United States (USA)
• Employee distribution: United States (USA) 74%, Nigeria 26%
• Latest funding: May 2017
• Founded year: 2013
• Headcount: 51-200
• LinkedIn: npi-medical

NPI/Medical, founded in 2013 and based in Ansonia, Connecticut, is a medical device manufacturer that specializes in injection molding and kitting services. The company serves original equipment manufacturers (OEMs) in the medical device sector, providing efficient manufacturing solutions that facilitate quicker product introductions and streamline supply chains. NPI/Medical operates from a 66,000-square-foot facility equipped with Class 7 and Class 8 clean rooms, ensuring that their production meets stringent quality standards. Their capabilities include traditional injection molding, automated insert molding, and a range of value-added services such as in-house tooling and quality assurance. NPI/Medical's approach to manufacturing emphasizes speed, precision, and reliability, making them a valuable partner for medical device companies looking to navigate the complexities of product development and market entry.

Contract Manufacturing Insights: Key Companies in Connecticut

Company	Headquarter	Size	Founded	Ownership
Imperial Electronic Assembly	Brookfield, Connecticut, United States (USA)	201-500	1989	Family Owned
Accutron	Windsor, Connecticut, United States (USA)	51-200	1989	Corporate
Scott Electrokrafts, Inc.	Andover, Connecticut, United States (USA)	11-50	1967	Private
TOMZ Corporation	Berlin, Connecticut, United States (USA)	201-500	1988	Family Owned
Tornik, LLC	East Hartford, Connecticut, United States (USA)	51-200	1990	Private
Chapco, Inc	Chester, Connecticut, United States (USA)	51-200	1964	Family Owned
Kimchuk, INC.	Danbury, Connecticut, United States (USA)	51-200	1964	Private
OSDA Printed Circuit Board Assembly	Milford, Connecticut, United States (USA)	11-50	1987	Corporate
Carlton Industries Corporation (CIC)	Hamden, Connecticut, United States (USA)	11-50	1994	Private
Gregor Technologies, LLC	Torrington, Connecticut, United States (USA)	1-10	1989	Private
Wanho Mfg LLC	Cheshire, Connecticut, United States (USA)	501-1000	2004	Private
Forum Contract Manufacturing	Waterbury, Connecticut, United States (USA)	51-200	1992	Private
Synectic Medical Product Development (A MACK Molding Company)	Woodbridge, Connecticut, United States (USA)	11-50	1981	Corporate
The Cly-Del Manufacturing Company	Waterbury, Connecticut, United States (USA)	51-200	1939	Family Owned
Hobson & Motzer, Inc.	Durham, Connecticut, United States (USA)	201-500	1912	Corporate
Avna	New Britain, Connecticut, United States (USA)	201-500	1911	Private
Stewart EFI, LLC	Thomaston, Connecticut, United States (USA)	201-500	1936	Private
RK Manufacturing	Danbury, Connecticut, United States (USA)	51-200	1978	Private
NPI/Medical	Ansonia, Connecticut, United States (USA)	51-200	2013	Corporate

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