Our History

HiRel Connectors Inc. (HIRELCO®) was founded in 1967 as a small business specializing in hermetic connectors primarily for military-based applications. Throughout the years, HIRELCO® has evolved into an industry leader whose expertise is in designing and manufacturing custom and MIL-SPEC interconnect products for a variety of industries. Today, the HIRELCO® group employs about 310 people among five facilities in the beautiful college towns of Claremont and Pomona, California. We proudly produce 100% of our parts right here in the United States. HIRELCO’s® capabilities include designing, manufacturing and marketing electrical connectors, interconnect systems, specialty cables and connector accessories.

HIRELCO® has been a trusted supplier in many industries since our inception. From providing the explosive bolts for the Apollo missions, to our most recent H2D High Density connectors for NASA’s ORION space program, we have been an integral part of mission-critical developments and successes. HIRELCO® primarily focuses on providing solutions for existing problems within various markets when standard MIL-SPEC connectors and cable assemblies are just not robust enough to maintain performance.

In an effort to maintain component availability, controllability and simplicity, HIRELCO® has implemented a vertically integrated supply system and thus, manufactures and performs most operations in house. Customized components and materials along with our design engineers, play a significant role in HIRELCO’s® ability to produce the most reliable electrical connectors and cable assemblies in the world. Our company sets the precedence, as a diversified leader in high growth areas of the interconnect industry and provides creative solutions for our industrial, military and aerospace customers.

Our organization partners with other leading companies across a wide range of industrial applications and marketplaces. We develop products that sustain and enhance the performance of our customer’s critical programs and devices. HIRELCO’s® successful expansion is a direct reflection of our entrepreneurial and agile engineering / management teams, as well as our entire company’s commitment to build the best electrical systems in the world.

For over 50 years, HIRELCO® has enjoyed tremendous success as the manufacturer of the most reliable connectors used in military applications, space and land-based programs, commercial aircraft and defense industries around the globe. As we continue to pave the way into the future, our mission is to continually develop the most reliable and trustworthy interconnect solutions. HIRELCO’s® objective is to assist in achieving the goals and aspirations of our customers through reliability, innovation and technology for generations to come.

Industries Served Contact Us Our Capabilities

Our Mission and Values

HiRel Connectors, Inc. is a world leader in the engineering and manufacturing of highly reliable connector systems which, by design, exceed the diverse needs of military, commercial and custom applications.

We are a forward-looking company that anticipates, develops and solves customers' product needs based on industry feedback and our own internal innovations.

Continuous improvement is our fundamental quality culture. HiRel Connectors' quality, delivery and service depend upon the control of product processes and are based upon the alignment of specific quality responsibilities to ALL company personnel which together, maintain effective quality control.

HiRel Connectors' manufacturing expertise includes: MIL-C 38999, 83723, 5015, 26482, 26500, 83513, 81511. European Specifications EN 2997, ESC 10, ESC 11 and ESC 15.

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Continuous Improvement

"Our Job is to Create Your Vision. We can design
Any Custom Solution for Your application."

- HIREL Connectors Inc. -

Industries Served

HIRELCO® has a wide variety of industries served and applications for our product lines. We also can customize any project and parts to meet your needs and desired application. If you have any questions about our uses and applications contact us today or would like to get a project started, contact us today.


Common Product Applications for Missiles

  • Guidance
  • Rocket Motors
  • Instruments
  • Umbilicals
  • Actuators
  • Initiators
  • Launchers
  • Seekers
  • Ground Support, etc.

Aircraft: Land-based, Marine, & Space

Common Product Applications for Aircraft

  • Hydraulic Systems
  • Engines
  • Fire Detection Systems
  • Instruments
  • Landing Gear
  • Fueling Systems
  • Communications
  • Firewalls
  • Transducers
  • FLIR
  • Cryogenics, etc.

Additional Applications

Additional Common Product Applications

  • Tanks
  • Fighting Vehicles
  • Oil Exploration
  • Shipboard
  • Radar
  • Submarine



We are quality certified so that you can rest assured that we deliver quality products and services.

  • Quality Control
  • Held to the Highest Standards
  • Focused on Continuous Improvement
  • The Highest Reliability
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