IEH Corporation

What IEH Corporation does

IEH Corporation (OTCQX: IEHC) is a fourth-generation, family-owned U.S. manufacturer of hyperboloid electrical connectors, founded in 1941 as L. Offerman Tool and Die and reincorporated under its current name after transitioning to hyperboloid contact production in the late 1960s. The company's core product is a family of PCB connectors, individual contacts, hybrid power/signal interfaces (HBH series), and high-speed Hyperkinetic connectors built around a proprietary twisted-wire cage sleeve that forms a hyperboloid-shaped contact geometry, delivering multiple redundant line-contact paths, sub-1-ounce insertion force for common sizes, 100,000+ mating cycles, and shock resistance exceeding 300 g's. Manufacturing is split between a Brooklyn Army Terminal headquarters facility and a secondary site in Allentown, Pennsylvania, with products qualified under MIL-DTL-55302 and ISO 9001:2015.

The business model is a B2B direct-sales and authorized-representative distribution model, with quote-based pricing driven by specification, volume, and application requirements. IEH sells primarily into four verticals — defense (PATRIOT, THAAD, AMRAAM, F-35, Apache, Mark-48 torpedo), commercial aerospace (Boeing 737/787, Airbus A320/A340/A380), space (James Webb, Orion, GPS III, ISS, OneSat), and medical (Zoll life vest) — with industrial as a secondary segment. FY26 revenue was $29.4M against a backlog exceeding $23M, and the company upgraded to the OTCQX Best Market in February 2026 following dismissal of an SEC administrative proceeding.

Name

IEH Corporation

Legal name

IEH Corporation

Website

https://iehcorp.com

Company type

Public

Founded year

1941

Operating status

Operating

Headcount range

101–250 employees

Short description

IEH Corporation is a fourth-generation, family-owned U.S. manufacturer of proprietary hyperboloid PCB connectors and contacts, serving defense, aerospace, space, and medical OEMs with Mil-Spec-qualified, ultra-reliable interconnect solutions.

Ownership category

akta.pro rank

Product category

Electrical Connectors and Interconnect Components

NAICS

Electronic Connector Manufacturing (334417), Current-Carrying Wiring Device Manufacturing (335931)

SIC

Electronic Connectors (3678), Electronic & Other Electrical Equipment (No Computer Equip) (3600)

akta.pro primary industry

Connectors & Interconnect Components (Industrial connectors, terminals, sockets, backplane) (IMAGAJAC)

akta.pro secondary industries

PCB Assembly (PCBA/EMS) (HDAHAOAI), Industrial PCB & Substrate Components (Bare PCBs, rigid-flex, ceramic substrates, thick-film) (IMAGAJAM)

Keywords

• Hyperboloid connectors
• PCB interconnect solutions
• Defense aerospace connectors
• Mil-Spec electrical connectors
• High reliability contacts

Headquarters

HQ city

Brooklyn

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. PCB Connectors and Contacts: IEH manufactures and sells high-performance hyperboloid PCB connectors and contacts for defense, aerospace, space, medical, and industrial applications. Revenue is generated through product sales with custom and standard configurations.
2. Custom Connector Solutions: Custom connector design and manufacturing services from concept to production, serving unique application requirements including circular chambers, torpedo guidance systems, and complex military systems.
3. Value-Added Services: Additional services including engineering collaboration, 3D modeling, configurator tools, application guidance, and technical support throughout product lifecycle.

Go-to-market motion3 records

Distribution channels3 records

Marketing channels7 records

Core offering

IEH Corporation designs, manufactures, and sells high-reliability hyperboloid PCB connectors, hybrid power/signal connectors, high-speed connectors, and individual hyperboloid contacts, along with custom connector engineering services, for defense, aerospace, space, medical, and industrial applications requiring performance in extreme environments. Products are manufactured in the USA to MIL-DTL-55302 and ISO 9001:2015 standards and sold through direct field sales and an authorized representative network.

Product overview

IEH Corporation offers a portfolio of hyperboloid connector products and related services. The core offering consists of hyperboloid PCB connectors manufactured under Mil-DTL-55302, including standard PCB connectors, the HBH Hybrid Power/Signal series combining power and signal contacts, the Hyperkinetic high-speed series for data-intensive applications, and individual hyperboloid contacts. These are complemented by custom design solutions for unique application requirements and value-added services including engineering support and 3D modeling. The product line serves defense, aerospace, space, medical, and industrial sectors where reliability in extreme environments is critical.

Differentiator

Problem solved

Functional benefit

Products and services

• Hyperboloid PCB Connectors Standard hyperboloid printed circuit board connectors manufactured under Mil-DTL-55302 specifications, providing low insertion force, immunity to shock and vibration, and 100,000+ mating cycles for defense, aerospace, space, and industrial applications.
• HBH Hybrid Power/Signal Connectors Next-generation hybrid connectors combining power and signal contacts in a single interface, engineered for applications requiring both high-current delivery and data transmission in space-constrained designs.
• Hyperkinetic Series High-Speed Connectors High-speed connectors designed for cPCI and VITA-compatible applications, offering reliable high-speed data transmission capabilities with the Hyperboloid contact design's proven durability.
• Hyperboloid Contacts Individual hyperboloid socket contacts featuring twisted wire cage technology that provides multiple lines of contact around mating pins, offering superior current-carrying capacity and extended cycle life.
• Custom Hyperboloid Connector Solutions Engineered custom hyperboloid connector designs tailored to specific application requirements, ranging from circular chambers to torpedo guidance systems, leveraging 80+ years of connector innovation.
• Value-Added Services Additional manufacturing and engineering services including 3D modeling, configurator tools, and application guidance from concept through production implementation, supporting custom and standard product deployments.

Quantifiable outcome

• 100,000+ mating cycles without degradation
• +3 more outcomes

Named customers15 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

One partnership is on record.

• Zoll Medical CorporationcoreStrategic or Co-development PartnerIEH partnered with Zoll Medical to develop custom hyperboloid contacts for Zoll's wearable cardiac defibrillator (life vest). The partnership involved direct collaboration between IEH's engineering team and Zoll's design and reliability teams to reengineer the connection interface using hyperboloid technology. IEH developed a custom-fit solution that integrated seamlessly into Zoll's existing connector layout without requiring housing redesign, achieving zero connection failures in testing.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Glenair: Glenair is a U.S.-based manufacturer specializing in Mil-spec and harsh-environment connectors for defense, aerospace, and space applications, directly overlapping with IEH's customer base and mission-critical use cases.
• Smiths Interconnect: Smiths Interconnect (formerly Hypertronics) is the most direct hyperboloid competitor to IEH, offering its own hyperboloid contact technology alongside a broader portfolio of Mil-spec and aerospace connectors serving defense, aerospace, space, and medical customers.
• Cinch Connectivity Solutions: Cinch (a Bel Fuse company) supplies Mil-spec, aerospace, and space-grade connectors and interconnects with overlapping defense and aerospace customer programs relative to IEH.
• ITT Cannon: ITT Cannon produces Mil-spec and high-reliability circular and PCB connectors for defense, aerospace, and industrial markets, competing with IEH for prime defense contractor socket positions on major U.S. and allied programs.
• Radiall: Radiall manufactures high-reliability interconnect solutions for aerospace, defense, and space applications, with a product portfolio that competes directly with IEH on commercial and military aerospace platforms.
• Souriau (Eaton): Souriau, part of Eaton's Aerospace group, supplies high-reliability circular and rectangular connectors for military, aerospace, and space programs across the same platforms where IEH is specified.
• Positronic: Positronic manufactures high-reliability rectangular PCB connectors for military, aerospace, space, and medical applications, with overlap in mission-critical customer segments served by IEH.

Broad incumbents

• Amphenol: Amphenol is the largest connector manufacturer globally and offers Mil-spec, aerospace, and space-grade interconnect solutions across all major defense and aerospace programs. While not specializing in hyperboloid, it competes for the same prime contractor socket wins through its broader portfolio.
• TE Connectivity: TE Connectivity is a global incumbent offering a comprehensive aerospace, defense, and space interconnect portfolio, including high-reliability PCB connectors. It competes with IEH on major defense and commercial aerospace platforms through scale and breadth rather than hyperboloid-specific technology.

Emerging players

• Harwell Electronics: Harwell produces hyperboloid contact sockets specifically targeting military and aerospace applications, representing a more focused competitor to IEH's core hyperboloid technology.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about IEH Corporation