Aerospace manufacturing in Indiana is a critical segment of the broader aerospace sector, characterized by companies honing in on the design, production, and maintenance of aircraft components. From precision machining to composite structuring, these firms cater to both military and commercial aviation demands. The industry is evolving quickly, driven by innovations in technology, sustainability efforts, and a strong focus on regulatory compliance. Growing global air travel demand post-pandemic is prompting expansion and modernization within this sector, indicating a robust future trajectory for Indiana's aerospace prowess.


This list highlights 23 aerospace manufacturing firms in Indiana, varying in size from small teams of under 10 to medium-sized workforces of over 600. Founded between 1939 and 2014, these companies are primarily located in urban areas like Indianapolis and Fort Wayne, specializing in areas such as CNC machining, composite materials, and high-precision fabrication. Their diverse offerings cater to various sectors, including aerospace, defense, and energy, illustrating a blend of built-in legacy and progressive technologies.


Continue reading to explore top aerospace manufacturing companies in Indiana.


Top 23 Aerospace Manufacturing Companies in Indiana


1. CNC Industries, Inc.

  • Website: cncind.com
  • Ownership type: Family Owned
  • Headquarters: Fort Wayne, Indiana, United States (USA)
  • Employee distribution: United States (USA) 81%, Canada 19%
  • Founded year: 1971
  • Headcount: 11-50
  • LinkedIn: cnc-industries-inc.

CNC Industries, Inc., based in Fort Wayne, Indiana, is a family-owned contract manufacturer that has been in operation since 1971. The company specializes in high-speed CNC machining and fabrication services, providing precision components primarily for the aerospace and defense sectors. With a workforce of 26 employees, CNC Industries emphasizes quality and efficiency, utilizing advanced manufacturing technologies and robust data management systems to meet the needs of its clients. The company is AS9100 Rev D certified, which highlights its adherence to stringent quality standards in aerospace manufacturing. CNC Industries has built a solid reputation over the years, earning several awards for quality and performance, including recognition from BAE Systems as a top supplier. Their capabilities extend to assembly, inspection, and custom fixture design, making them a valuable partner for various OEMs in North America, Europe, and Asia.


2. Twigg Aerospace Components

  • Website: twiggcorp.com
  • Ownership type: Private
  • Headquarters: Martinsville, Indiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1971
  • Headcount: 1-10
  • LinkedIn: twiggaerospace

Twigg Aerospace Components, based in Martinsville, Indiana, is a private aerospace manufacturer with a focus on precision components for the defense, commercial aerospace, and energy sectors. Founded in 1971, the company has built a reputation for quality and reliability, serving a range of clients including the U.S. Department of Defense and various aerospace original equipment manufacturers (OEMs). Twigg specializes in the fabrication of exotic alloy components and offers maintenance, repair, and overhaul (MRO) services, which are crucial in an industry facing supply chain challenges. Their manufacturing capabilities include advanced CNC machining and a commitment to lean process management, ensuring efficiency and cost-effectiveness for their customers. With a dedicated team of engineers, Twigg is well-equipped to handle complex projects and adapt to the evolving needs of the aerospace sector.


3. Polycraft Products, Inc.

  • Website: polycraftproducts.com
  • Ownership type: Private
  • Headquarters: Greendale, Indiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1982
  • Headcount: 51-200
  • LinkedIn: polycraft-products-inc.

Polycraft Products, Inc., founded in 1982 and based in Greendale, Indiana, is a component manufacturer that specializes in providing critical parts for the aerospace industry. The company has built a reputation for its expertise in molding polymers and bonding composites, which are essential for producing aircraft engine parts and ground support tooling. Polycraft collaborates closely with original equipment manufacturers (OEMs) to develop custom components tailored to specific project requirements. Their product offerings include flight hardware such as seals, gaskets, and bellows, which are vital for the safe operation of aircraft. The company operates from a modern facility designed to enhance quality and efficiency, and it emphasizes a culture of skilled craftsmanship among its employees. Polycraft is also a licensed repair station under the Federal Aviation Administration (FAA), ensuring that its products meet rigorous safety and regulatory standards. With a focus on innovation and customer collaboration, Polycraft continues to support the aerospace sector and other industries, including medical and manufacturing.


4. Britt Aero

  • Website: brittaero.com
  • Ownership type: Private
  • Headquarters: Brazil, Indiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1986
  • Headcount: 51-200
  • LinkedIn: britt-aero

Britt Aero, located in Brazil, Indiana, is an aerospace manufacturer that has been operational since 1986. The company specializes in complex manufacturing and custom tooling, catering to major aerospace clients. With a workforce of around 65 skilled employees, Britt Aero prides itself on its ability to produce high-quality parts while maintaining tight tolerances and quick lead times. Their commitment to quality is reflected in their extensive certifications, including AS9100, ISO9001, and Nadcap. Britt Aero has established long-term relationships with notable clients such as GE Aviation, Pratt and Whitney, and Rolls-Royce, further solidifying its position in the aerospace sector. The company continues to invest in advanced machinery and technology to enhance its capabilities and meet the evolving needs of its customers.


5. Bowmar LLC

  • Website: bowmarllc.com
  • Ownership type: Private
  • Headquarters: Fort Wayne, Indiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1951
  • Headcount: 11-50
  • LinkedIn: bowmar-llc

Bowmar LLC, based in Fort Wayne, Indiana, is an aerospace manufacturer with a rich history dating back to 1951. The company specializes in creating complex precision critical function assemblies tailored for the aerospace and defense industries. Their product range includes electro-mechanical assemblies, precision gear heads, and human-machine interface products, all designed to meet the stringent requirements of military and commercial aircraft. Bowmar's clientele includes government entities and prime contractors, highlighting their role as a trusted supplier in the sector. The company is committed to quality, as evidenced by their certifications, including ISO9001 and AS9100, and their compliance with ITAR regulations. With nearly 70 years of experience, Bowmar has established itself as a key player in the aerospace manufacturing landscape, continually investing in technology and processes to enhance their offerings.


6. Kessington Aerospace

  • Website: kessington.com
  • Ownership type: Private Equity
  • Headquarters: Elkhart, Indiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: March 2011
  • Founded year: 1974
  • Headcount: 51-200
  • LinkedIn: kessington

Kessington Aerospace, established in 1974 and located in Elkhart, Indiana, is a manufacturer dedicated to producing precision machined components for the aerospace and defense industries. The company offers a comprehensive range of services, including CNC machining, turning, milling, and engineering, catering to the specific needs of their clients. Kessington Aerospace prides itself on its commitment to quality, achieving a 98% on-time delivery rate and maintaining perfect audit scores in their certifications. Their clientele includes notable names such as Honeywell, Boeing, and GE Aviation, highlighting their involvement in critical aerospace applications. With a workforce of around 49 employees, Kessington operates with a focus on efficiency and innovation, utilizing advanced technologies to ensure that they meet the demanding standards of the aerospace sector.


7. Aerodine Composites


Aerodine Composites, founded in 1989 and based in Indianapolis, Indiana, is a private manufacturer specializing in high-performance lightweight composite structures. The company serves various industries, including aerospace, medical, military, and motorsports. Aerodine is recognized for its engineering support, research and development, and custom solutions that address the demand for durable and efficient materials in challenging applications. With a team of 19 employees, Aerodine operates as an FAA-approved repair station, focusing on the maintenance, repair, overhaul, and modification of advanced composite components. Their expertise in materials such as carbon fiber, fiberglass, and Kevlar allows them to produce innovative solutions for the aerospace sector, including unmanned vehicle components and structural repairs. Aerodine's commitment to quality is underscored by their certifications, which ensure compliance with stringent industry standards.


8. Marion Tool & Die, Inc. dba Marion Manufacturing

  • Website: mariontool.com
  • Ownership type: Private
  • Headquarters: West Terre Haute, Indiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: Other (Grant), $115,000, June 2022
  • Founded year: 1996
  • Headcount: 51-200
  • LinkedIn: marion-tool-and-die-inc.

Marion Tool & Die, Inc. dba Marion Manufacturing, founded in 1996, is a privately held company based in West Terre Haute, Indiana. With a workforce of approximately 71 employees, the company specializes in high-quality machining and manufacturing components. Marion Manufacturing serves various industries, prominently including aerospace, defense, energy, heavy equipment, and agriculture. Their expertise lies in precision machining, rapid prototyping, and engineering services, which they tailor to meet the specific needs of their business clients. The company has achieved significant milestones, such as AS9100 certification, which underscores their commitment to quality in the aerospace sector. They have also secured military contracts, further solidifying their role in the aerospace and defense industries. Marion Manufacturing is dedicated to delivering innovative solutions and maintaining strong client relationships, ensuring they remain relevant in a competitive market.


9. AMG Engineering & Machining

  • Website: amgindy.com
  • Ownership type: Corporate
  • Headquarters: Indianapolis, Indiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: August 2023
  • Founded year: 1989
  • Headcount: 51-200
  • LinkedIn: amgindy

AMG Engineering & Machining, established in 1989, is an engineering services and manufacturing company based in Indianapolis, Indiana. The firm specializes in precision machining and manufacturing components for various industries, including aerospace, automotive, and healthcare. With a strong emphasis on quality, AMG produces precision machined components, sub-assemblies, and kits tailored to meet the stringent requirements of the aerospace and defense sectors. Their facility boasts 30,000 square feet of climate-controlled manufacturing space, equipped with state-of-the-art CNC capabilities. AMG is also a certified Service-Disabled Veteran-Owned Small Business, which adds to its credibility in the industry. The company has a proven track record of delivering projects on time and without cost overruns, making it a reliable partner for aerospace clients.


10. Praxair Surface Technologies


Praxair Surface Technologies, operating under the name Linde AMT, is an advanced materials company based in Indianapolis, Indiana. Founded in 1996, the company specializes in innovative solutions for coatings, electronics, and additive manufacturing. They cater to various industries, prominently including aerospace and automotive, by providing high-quality materials and patented application processes that enhance operational efficiency and product performance. Their offerings include custom metal powders and global coating services, specifically designed to meet the rigorous standards of aerospace applications. Notably, Linde AMT has developed aerospace-grade TRUFORM™ metal powders, engineered to meet extreme specifications, and has established a partnership with NASA for the licensing of revolutionary alloy metal powder. This involvement highlights their commitment to advancing technology in the aerospace sector.


11. Major Tool & Machine

  • Website: majortool.com
  • Ownership type: Corporate
  • Headquarters: Indianapolis, Indiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: Other (Grant), $175,000, June 2022
  • Founded year: 1946
  • Headcount: 201-500
  • LinkedIn: major-tool-%26-machine

Major Tool & Machine (MTM), based in Indianapolis, Indiana, has been a significant player in the contract manufacturing sector since its inception in 1946. The company specializes in complex engineering and machining services, catering primarily to the aerospace and defense industries. With a sprawling 650,000 square foot manufacturing facility, MTM is equipped to handle large-scale projects that require precision and reliability. Their services include CNC machining, welding, fabrication, and assembly, which are vital for producing components used in aerospace applications. MTM has built a reputation for supporting mission-critical programs and has received accolades such as the Raytheon Technologies Premier Supplier Award, underscoring their commitment to quality and excellence in manufacturing. The company operates with a skilled workforce and advanced technology, ensuring they meet the rigorous demands of the aerospace sector.


12. KIHM Metal Technologies

  • Website: kihmmetaltech.com
  • Ownership type: Corporate
  • Headquarters: Brazil, Indiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: October 2022
  • Founded year: 2006
  • Headcount: 11-50
  • LinkedIn: kihm-metal-technologies

KIHM Metal Technologies, founded in 2006 and based in Brazil, Indiana, is a manufacturing company that specializes in metal forming and fabrication services. With a workforce of 11-50 employees, the company caters to various industries, including aerospace, defense, and power generation. KIHM focuses on producing high-quality components from exotic alloys, which are essential for applications in the aerospace sector. Their service offerings include metal spinning, welding, hydroforming, and complex machining, all designed to meet the specific requirements of their clients. The company is committed to operational excellence and customer satisfaction, ensuring that they provide tailored solutions that enhance both quality and manufacturability. KIHM holds several certifications, including ISO 9001:2015 and AS9100 D, which underscore their dedication to maintaining high standards in their manufacturing processes.


13. Aerofab Division of Tube Processing Corporation


Aerofab Division of Tube Processing Corporation, based in Indianapolis, Indiana, is a manufacturing entity that focuses on producing and repairing complex metal components for the aerospace and energy markets. Established in 1939, Aerofab has built a reputation for high-precision manufacturing and repair services. The company operates as a Tier 1 supplier, providing essential components for aviation engines, industrial gas turbines, and other high-performance applications. Aerofab's extensive capabilities include sheet metal fabrication, machining, welding, and various advanced processes such as heat treating and non-destructive testing. The company is ISO- and NADCAP-certified, ensuring compliance with stringent quality standards required in the aerospace industry. With a workforce of around 75 employees, Aerofab continues to serve a global clientele, emphasizing operational efficiency and reliability in its offerings.


14. Breyden Products, LLC.

  • Website: breydenproducts.com
  • Ownership type: Corporate
  • Headquarters: Columbia City, Indiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: June 2022
  • Founded year: 1990
  • Headcount: 11-50
  • LinkedIn: breyden-products-inc-

Breyden Products, LLC, founded in 1990 and based in Columbia City, Indiana, is a manufacturer focused on producing high-quality lacing tapes, cords, and yarns for the aerospace and electric motor industries. The company prides itself on its ability to meet military specifications, serving prominent manufacturers such as Boeing and General Electric. Breyden Products operates with a strong emphasis on quality and innovation, ensuring that their products meet the rigorous demands of their customers. They are AS9100 D certified and ISO 9001:2015 certified, which underscores their commitment to maintaining high standards in manufacturing processes. With over 75 years of combined experience in the industry, Breyden Products has established itself as a reliable partner for companies in the aerospace sector, providing tailored solutions to meet specific requirements. Their extensive knowledge of fibers and finishes, along with a thorough understanding of processing techniques, allows them to deliver products that exceed customer expectations.


15. Aero Metals Inc.

  • Website: aerometals.com
  • Ownership type: Private
  • Headquarters: La Porte, Indiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1961
  • Headcount: 201-500
  • LinkedIn: aero-metals-inc.

Aero Metals Inc., based in La Porte, Indiana, has been a prominent player in the manufacturing sector since its inception in 1961. Specializing in precision investment casting, the company produces high-quality cast parts tailored for various industries, with a significant focus on aerospace and military applications. Aero Metals is known for its ability to handle complex geometries and tight tolerances, which are essential in the aerospace field. Their offerings extend beyond casting to include custom tooling, engineering assistance, and machining services, catering primarily to original equipment manufacturers (OEMs). The company is committed to quality, as evidenced by its ISO 9001:2015 certification, and it is ITAR registered, allowing it to produce components that meet the rigorous specifications required for defense and aerospace applications. With a workforce of around 76 employees, Aero Metals continues to leverage its decades of experience to support clients in achieving their manufacturing goals.


16. Mi-Tech Tungsten Metals, LLC

  • Website: mttm.com
  • Ownership type: Corporate
  • Headquarters: Indianapolis, Indiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: February 2022
  • Founded year: 1978
  • Headcount: 51-200
  • LinkedIn: mi-tech-metals

Mi-Tech Tungsten Metals, LLC, based in Indianapolis, Indiana, has been a prominent player in the manufacturing of tungsten alloys and composites since its founding in 1978. The company focuses on producing high-quality materials that serve various industries, including aerospace, medical, and defense. With a workforce of around 37 employees, Mi-Tech has built a strong reputation for delivering precision materials and technical resources to over 10,000 businesses. Their aerospace products are particularly noteworthy, as they are utilized in critical applications such as rotor blades and inertial systems. The company operates from an 85,000-square-foot facility, where they employ advanced manufacturing processes and stringent quality control measures to ensure the reliability of their products. Mi-Tech's commitment to excellence is reflected in their ISO 9001 and AS9100 certifications, which underscore their dedication to meeting industry standards. They continue to innovate and adapt to the evolving needs of their customers, making them a significant contributor to the aerospace manufacturing sector.


17. C.F. Roark Welding & Engineering Co.,Inc.


C.F. Roark Welding & Engineering Co., Inc., founded in 1949 and based in Brownsburg, Indiana, is a manufacturing company that specializes in complex metal fabrication and precision welding services. With a workforce of around 47 employees, Roark has built a solid reputation over its 70-plus years in business. The company caters to the aerospace, energy, and science industries, providing tailored solutions that meet the precise specifications of its clients. Their capabilities include electron beam welding, which allows for high precision and minimal distortion, making them a preferred partner for complex projects. Roark's client roster features prominent names such as GE Aviation, Rolls Royce, and Aerojet Rocketdyne, indicating their significant role in the aerospace sector. The company is also committed to quality, holding certifications such as AS9100 and ISO 9001, which are critical for maintaining high standards in aerospace manufacturing. Roark continues to innovate and expand its capabilities, ensuring it remains a relevant player in the industry.


18. MSP Manufacturing

  • Website: msp-manufacturing.com
  • Ownership type: Private
  • Headquarters: Bloomington, Indiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1943
  • Headcount: 11-50
  • LinkedIn: msp-aviation-inc.

MSP Manufacturing, based in Bloomington, Indiana, has been a key player in precision machining since its inception in 1943. The company specializes in manufacturing high-quality components for various industries, with a significant focus on aviation and aerospace. Their products are integral to the operation of nearly all commercial and military aircraft, reflecting their deep-rooted expertise in this field. MSP Manufacturing is known for its stringent adherence to industry standards, holding certifications such as ISO 9001:2015 and AS9100D, which are essential for aerospace suppliers. The company has collaborated with prominent names in the aerospace sector, including Boeing, Cessna, and Honeywell, providing critical components like avionics mounts and metal cases. In addition to aerospace, MSP has expanded its capabilities to serve the medical, automotive, and sanitation industries, demonstrating its versatility while maintaining a strong commitment to quality and customer satisfaction.


19. Precision Rings Incorporated


Precision Rings Incorporated, based in Indianapolis, Indiana, has been a custom manufacturer of piston rings and seal rings since its founding in 1949. The company serves a variety of industries, including aerospace, power generation, military, and industrial sectors. Precision Rings emphasizes quality and engineering expertise, ensuring that their products meet the specific sealing and performance requirements of their clients. They are particularly noted for their custom solutions in the aerospace sector, where precision and reliability are paramount. The company holds certifications such as ISO 9001:2015 and AS9100D, which reflect their commitment to quality management and aerospace standards. With a dedicated workforce and a focus on technological advancements, Precision Rings continues to adapt to the evolving needs of the industries they serve.


20. C&A Tool

  • Website: catool.com
  • Ownership type: Corporate
  • Headquarters: Churubusco, Indiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: August 2017
  • Founded year: 1969
  • Headcount: 501-1000
  • LinkedIn: c-%26-a-tool-engineering-inc.

C&A Tool Engineering, Inc., founded in 1969 and based in Churubusco, Indiana, is a contract manufacturer that specializes in high-precision machining and additive manufacturing. The company serves various sectors, including aerospace, medical, and industrial, providing solutions for complex components and devices. With a workforce of approximately 600 employees and over 750,000 square feet of manufacturing space, C&A Tool boasts a large collection of CNC machines and 3D printers. Their aerospace capabilities are particularly noteworthy, as they manufacture mission-critical components with tight tolerances, such as turbine disks and control surface components. C&A Tool is certified under AS 9100D, ensuring compliance with aerospace quality standards. They have also engaged in significant projects, including collaborations with Moog Space and Defense and a long-term agreement with GE for valve housings for LEAP engines. As a member of the MinebeaMitsumi family of companies, C&A Tool continues to invest in advanced technology and equipment to meet the evolving needs of the aerospace industry.


21. Morris Machine Co., Inc.

  • Website: morrismachine.com
  • Ownership type: Private
  • Headquarters: Indianapolis, Indiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1957
  • Headcount: 51-200
  • LinkedIn: morris-machine-co.-inc.

Morris Machine Co., Inc., located in Indianapolis, Indiana, has been a significant player in the aerospace manufacturing industry since its inception in 1957. The company specializes in producing high-precision components, utilizing advanced CNC machining and manufacturing techniques. With a workforce that includes seasoned professionals and enthusiastic newcomers, Morris Machine fosters an environment of skill development and innovation. Their capabilities range from 5-axis milling to complex assembly, allowing them to meet the demanding requirements of aerospace clients. The company is dedicated to quality assurance, implementing strict inspection guidelines to ensure that every component meets or exceeds industry standards. Morris Machine's commitment to community engagement is evident through their support of educational programs in engineering and manufacturing, further solidifying their role in the aerospace sector.


22. Hupp Aerospace / Defense

  • Website: huppaerospace.com
  • Ownership type: Private
  • Headquarters: New Haven, Indiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1997
  • Headcount: 11-50
  • LinkedIn: hupp-aerospace-defense

Hupp Aerospace / Defense, founded in 1997 and based in New Haven, Indiana, specializes in tailored kitting solutions for the aviation and defense industries. The company offers a range of products, including kits designed for various military helicopters such as the AH-64 Apache, CH-47 Chinook, OH-58 Kiowa, and UH-60 Black Hawk. Additionally, they provide corrosion prevention kits that are crucial for maintaining the integrity of military and commercial aircraft. Hupp Aerospace / Defense serves a clientele that includes major maintenance, repair, and overhaul (MRO) providers, as well as government entities, which rely on their efficient maintenance solutions. The company is certified under AS9100D and AS9120B, reflecting its commitment to quality management and continuous improvement in its processes and products.


23. Olson Custom Designs

  • Website: olsoncustomdesigns.com
  • Ownership type: Private
  • Headquarters: Indianapolis, Indiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2014
  • Headcount: 51-200
  • LinkedIn: olson-custom-designs

Olson Custom Designs, founded in 2014 and based in Indianapolis, Indiana, is a contract machine shop that specializes in precision CNC machining and fabrication services. The company serves various industries, including aerospace, medical, and defense, providing critical components that adhere to stringent quality standards. With a workforce of approximately 39 employees, Olson Custom Designs has established itself as a reliable partner for clients facing supply chain challenges. Their commitment to quality is underscored by certifications such as ISO 9001:2015, AS 9100D, and ISO 13485:2016. In the aerospace sector, they manufacture essential components like turbine blades and hydraulic system parts, demonstrating their capability to meet the rigorous demands of aerospace applications. The company emphasizes scalability and reliability, ensuring they can adapt to the evolving needs of their clients. Their focus on quality control and project management further enhances their standing in the aerospace manufacturing industry.



Aerospace Manufacturing Insights: Key Companies in Indiana


CompanyHeadquarterSizeFoundedOwnership
CNC Industries, Inc.Fort Wayne, Indiana, United States (USA)11-501971Family Owned
Twigg Aerospace ComponentsMartinsville, Indiana, United States (USA)1-101971Private
Polycraft Products, Inc.Greendale, Indiana, United States (USA)51-2001982Private
Britt AeroBrazil, Indiana, United States (USA)51-2001986Private
Bowmar LLCFort Wayne, Indiana, United States (USA)11-501951Private
Kessington AerospaceElkhart, Indiana, United States (USA)51-2001974Private Equity
Aerodine CompositesIndianapolis, Indiana, United States (USA)11-501989Private
Marion Tool & Die, Inc. dba Marion ManufacturingWest Terre Haute, Indiana, United States (USA)51-2001996Private
AMG Engineering & MachiningIndianapolis, Indiana, United States (USA)51-2001989Corporate
Praxair Surface TechnologiesIndianapolis, Indiana, United States (USA)1001-50001996Private
Major Tool & MachineIndianapolis, Indiana, United States (USA)201-5001946Corporate
KIHM Metal TechnologiesBrazil, Indiana, United States (USA)11-502006Corporate
Aerofab Division of Tube Processing CorporationIndianapolis, Indiana, United States (USA)51-2001939Corporate
Breyden Products, LLC.Columbia City, Indiana, United States (USA)11-501990Corporate
Aero Metals Inc.La Porte, Indiana, United States (USA)201-5001961Private
Mi-Tech Tungsten Metals, LLCIndianapolis, Indiana, United States (USA)51-2001978Corporate
C.F. Roark Welding & Engineering Co.,Inc.Brownsburg, Indiana, United States (USA)51-2001949Private
MSP ManufacturingBloomington, Indiana, United States (USA)11-501943Private
Precision Rings IncorporatedIndianapolis, Indiana, United States (USA)51-2001949Private
C&A ToolChurubusco, Indiana, United States (USA)501-10001969Corporate
Morris Machine Co., Inc.Indianapolis, Indiana, United States (USA)51-2001957Private
Hupp Aerospace / DefenseNew Haven, Indiana, United States (USA)11-501997Private
Olson Custom DesignsIndianapolis, Indiana, United States (USA)51-2002014Private


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