Suppliers: MIL-DTL-38999 Connectors

Omnetics Connector Corporation

MIL-Spec Connectors for Military & Army Applications - MIL-STD Electrical Connectors

Showcase your capabilities

If you design, build or supply MIL-DTL-38999 Connectors, create a profile to showcase your capabilities and connect with visitors who have an active requirement for your solutions.

Create Supplier Profile

MIL-DTL-38999 Connectors

Abi Wylie

Updated:

MIL-DTL-38999 connectors are a type of circular connector and a vital component in the defense sector, designed to be robust and provide reliable, secure optical and electrical connections. 

These circular connectors are standardized under the military specification MIL-DTL-38999, defining a variety of configurations to meet the wide range of requirements that come with defense operations.

The 38999 connector is produced in different series, including the widely used Series III. They have a high-density design, accommodating different contact sizes and layouts, such as a large number of contacts in limited space.

Key Features of MIL-DTL-38999 Connectors

The connector outer shells are generally manufactured out of robust materials such as stainless steel or aluminum, aiding resistance to unforgiving conditions, such as mechanical stress or contact with dust and moisture. 

A further central characteristic of D38999 connectors is hermetic sealing, which can prevent the equipment becoming contaminated and maintains the performance of any connected electronic devices. The electrical performance of the connectors themselves is also key, supporting a range of signal types like data, power, and RF. 

To meet the Mil 38999 specifications, connectors require thorough environmental testing, including but not limited to vibration and temperature extremes. The ability to function effectively is important in maintaining the standard of versatility required in defense applications, which can range from avionics and radar systems to communication equipment and electronic warfare.

As a result, interoperability is crucial, with 38999 connector manufacturers designing the connectors work with those made by other manufacturers, ensuring consistency in the equipment and aiding replacement or maintenance.

Applications of D38999 Connectors

Applications of the 38999 connector extend to ground-based communication infrastructure, naval vessels, and a wide variety of other defense platforms. In all of these, reliable connectivity is vital for operational success.

For example, these connectors provide secure and reliable connections for critical systems in aircraft, which can have high vibration and temperature fluctuations. Adhering to the specifications contributes to the safety and efficiency of defense operations.

Related Articles

Omnetics Connector Corporation on the Expanding Role of IoT in Military Defence Systems


Omnetics Connector Corporation discusses how the growing adoption of the Internet of Things is influencing military operations, infrastructure, and system design across connected defence platforms and operational environments

Jan 22, 2026
How Omnetics’ Rugged Miniature Connectors Support Modern Battlefield Electronics

Omnetics Connector Corporation outlines the role of ruggedized miniature connectors in maintaining signal integrity, electronic survivability, and reliable data transfer within compact defense electronics

Dec 19, 2025
Omnetics Precision Connectors Support Reliable Next-Gen Military Communications

Omnetics’ advanced connector technologies provide compact, durable, and high-performance solutions that maintain reliable connectivity and operational flexibility across next-generation military communication systems

Oct 23, 2025
What is MIL-DTL-38999?

Micropol breaks down the definition, benefits, and roles of the MIL-DTL-38999 connector, a robust and reliable cornerstone in modern military and aerospace connectivity

Jan 21, 2025
Omnetics Discusses Circular Connectors for Defense & Aerospace Electronics

Omnetics outlines the advantages of its K360 connectors, an innovative product line designed to tackle key challenges in military and aerospace applications

Sep 12, 2024
Omnetics Delivers Rugged Interconnect Systems for Advanced Mobile Defense Electronics

Omnetics discusses Micro and Nano connectors designed to meet the demanding requirements of modern military equipment, from satellites to soldier-worn devices

Aug 08, 2024
New Production Line for Hermetic MIL-DTL-38999 Connectors

Douglas Electrical Components has launched a new assembly line for Series I and III (Box Mount and Jam Nut) hermetic MIL-DTL-38999 connectors, aiming to provide quick lead times and enhanced customization

Jul 31, 2024
New EMI Shielded Panel & PCB Connectors Expand Harsh Environment Capabilities

Incorporating the benefits of TE Connectivity’s 369 series, these new connectors create opportunities with additional applications such as ethernet, power distribution and mixed signal/power devices

Oct 20, 2022
New 5-Pole Circular Connectors for Demanding Defense Applications

Smiths Interconnect’s HBB five-pole connector allows users to run five power lines in a very tight space, increasing the connectors’ flexibility and offering the ability to run redundant lines as required

Apr 14, 2022