Archive: Jan 2022

Breaking Down Military Connector Specifications

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Breaking Down Military Connector Specifications

Components for military applications must be built and tested according to specific military specifications, or Mil-Spec. Learn more about the value of Mil-Spec connectors and the Mil-Spec standards that regulate their features, performance, and testing.

What Are Mil-Spec Connectors?

Mil-Spec connectors are paired male and female components that transfer signals or electricity through contact points. Connectors have three main parts: the contacts, exterior shell, and terminals. These components must be able to withstand harsh environments. For example, the contacts are typically made of a highly conductive, noncorrosive material such as gold-plated phosphor bronze.

Mil-Spec connectors must comply with established requirements and are rated for safe and effective performance in certain military operations.

Military Connector Specifications

There are multiple Mil-Spec standards that guide the production and assessment of different types of connectors. The following standards apply to electrical connectors.

  • MIL-DTL-26482: This establishes the requirements for circular electrical connectors, which include quick disconnect, environmental resistance, and extreme temperature range.
  • MIL-DTL-55116: This describes requirements for connectors in radios and fill systems.
  • MIL-DTL-83527: This sets the requirements and testing criteria for highly specialized connectors meant for use in extremely rugged environments.

Amphenol Nexus Technologies offers the following Mil-Spec connectors that are compliant with the above standards.

  • M8805/3 switches: These push-button switches are specially rated for water submersion. They are often used in aircraft, ground vehicles, naval systems, rugged communications, and avionics.
  • M9177 telephone jacks and plugs: Our M9177 jacks feature a contact material of nickel-plated beryllium copper, and the plugs have a Monel contact. Both have a plastic shell. These products are ideal for ruggedized commercial and military applications.

Amphenol Nexus Technologies: Premium Mil-Spec Connectors

At Amphenol Nexus Technologies, we specialize in designing and manufacturing durable Mil-Spec connectors that comply with military standards.

We offer M8805/3 switches, M9177 telephone jacks and plugs, and M55116 audio jacks and plugs. Our M55116 Mil-Spec jacks and plugs provide long-lasting connections in audio components for radios, intercom systems, and more. They can take up to 60V and a 0.5A maximum current. With either solder cup contacts or crimp sleeves, these connectors are available with miniaturization, right angle, filtering, and shielding.

If you’re ready to select a Mil-Spec connector for your application, contact us today to learn more about our manufacturing capabilities.

The Importance of Mil-Spec Connectors

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The Importance of Mil-Spec Connectors

Military organizations establish strict standards for the components, equipment, and other manufactured goods they use in military operations. Those standards are referred to as Mil-Spec, or military specifications, and they establish the required dimensions, ratings, and features for each part.

What Are Mil-Spec Connectors?

Mil-Spec electrical and fiber-optic connectors, particularly the Army-Navy series, are the modern standard for military circular connectors. Their design, manufacturing, and operational capabilities must meet certain requirements for heavy-duty use in military applications. For example, mil-spec connectors consist of male and female pairs that must be constructed from noncorrosive, conductive metals such as gold-plated beryllium copper and contained in a dielectric insulator.

Manufacturers and military organizations work together to ensure a product design meets the right standards for certain environments and applications. Because these standards demand durability and reliable performance, other industries—such as aerospace, marine, and automotive—also prefer Mil-Spec connectors.

Choosing Mil-Spec Connectors

When selecting Mil-Spec connectors, ensure each part of the component complies with the applicable military standards. Consider different product options such as size, type, coupling method, and materials.


The contacts create the electrical path that travels from one connector to its mate. Contacts are made from pins and sockets, and they can have different coupling designs to ensure a reliable connection. These designs include threaded coupling, breech lock coupling, and bayonet coupling.


The connector shell is the protective housing that holds the contact points and internal parts. Usually made of corrosion-resistant aluminum, the shell can come in different styles, such as an angled or straight plug, box-mount or wall receptacle, or dummy receptacle. Circular Mil-Spec connectors are cylindrical and vary in size.


Terminals into the system usually have a crimped or soldered connection. The terminals attach the connector to a conductor to facilitate an electrical flow.

M55116 Mil-Spec and Mil-Spec-Type Connectors

At Amphenol Nexus Technologies, we specialize in creating Mil-Spec components and connectors, such as audio plugs and jacks. Our M55116 Mil-Spec audio connectors feature polarized plugs with multiple pins, a waterproof design, and options for added shielding, filtering, miniaturization, and right angle. They can handle frequency circuits up to 60V and a maximum current of 0.5A. Our Mil-Spec connectors are commonly used in audio systems for military radios and intercoms.
In addition to our M55116 Mil-Spec product line, we also carry M9177 telephone jacks and plugs and M8805/3 switches.

Amphenol Nexus Technologies: Premium Mil-Spec Connectors

Connectors that meet or exceed Mil-Spec standards provide long-term, reliable performance. Many products on the market meet these standards, but your specific application will determine which connectors are right for you. Amphenol Nexus Technologies is committed to providing the highest quality Mil-Spec connectors that fit your needs. Contact us today to learn more about our capabilities.