MS27473 MIL-DTL-38999 Series II Low-Profile Circular Connectors

MIL-DTL-38999 MS27467 Circular Connectors

MS27473 Series Connectors: MIL-DTL-38999 Series II Low-Profile High-Density Circular Connectors

Engineered to meet MIL-DTL-38999 Series II military specifications, the MS27473 series is a lightweight, space-saving circular connector built for compact, high-demand aerospace, defense, and industrial applications where limited installation space and extreme reliability are non-negotiable. We stock the full MS27473 lineup, with 2–128 pin counts available to match your system’s exact needs.

Available Models & Customizable Options

We offer the full range of MS27473 models, covering various shell sizes and pin counts:

• MS27473T12B02P: small shell size, suitable for micro signal transmission
• MS27473T12B04S: low-pin configuration, ideal for simple circuit connections
• MS27473T15B11P: medium pin count, meeting multi-channel signal requirements
• MS27473T18B22S: cost-effective option for industrial control modules
• MS27473T21B35P: multi-pin integration, suitable for secondary avionics systems
• MS27473T23B51S: high-density configuration, meeting complex equipment signal integration needs
• MS27473T25B61P: large pin count option for large industrial control panels
• MS27473T31B128S: ultra-high density, suitable for satellite communication and high-end avionics systems

Core Advantages

Low-Profile Design + Flexible Pin Counts

The ultra-thin shell, a signature of MIL-DTL-38999 Series II, fits tight spaces, paired with 2-128 contacts (0.8mm-2.7mm diameter) to support everything from small signal setups to high-density multi-channel systems.

Fast Bayonet Lock + Lightweight Durability

Its 1/4-turn 3-pin bayonet coupling enables blind mating (anti-mislocation) for quick, hassle-free field installs. The aluminum alloy (or corrosion-resistant stainless steel) housing balances light weight with military-grade toughness: 500+ mating cycles and 500h salt spray resistance.

Extreme Environment Readiness

With a -65℃ to +200℃ operating range, IP67/IP68 sealing, and PEI (Polyetherimide) or PPS (Polyphenylene Sulfide) insulation (ceramic options for high-demand models), the MS27473 delivers stable 600V AC/23A transmission in extreme heat, cold, or moisture—trusted for marine offshore and high-vibration industrial setups.

Ideal Applications

• Aerospace cabin avionics & UAV systems
• Compact military communication gear
• Miniaturized industrial control panels
• Marine offshore monitoring equipment

Selection Guidance

When choosing an MS27473 connector, consider the following decision points:

• Pin count and contact size: Match the number of circuits and current per contact to your signal and power requirements.
• Shell size and mounting style: Verify the available panel cutout and whether you need a jam-nut receptacle, wall-mount receptacle, or plug.
• Environmental sealing: Confirm whether your application requires the IP67 or IP68 rating and the -65℃ to +200℃ temperature range.
• Mating side: Specify whether you need a plug or receptacle and the corresponding keying arrangement to avoid mis-mating.

Suitable and Unsuitable Boundaries

These connectors are well suited for compact avionics, military communication systems, and high-vibration industrial equipment where space is limited and reliability is critical. They are not intended for applications requiring high-current power distribution beyond the rated 23A per contact, nor for environments where the connector will be repeatedly mated and unmated beyond the 500-cycle rating without maintenance. For higher-density or different locking requirements, consider other MIL-DTL-38999 series variants.

Get Your Custom Solution Today

Need a tailored connector setup for your specific project? Our engineering team is ready to help you select the right MS27473 model and provide technical support for seamless integration. Contact us now via email or our online form to request a free quote or detailed datasheet—we ship globally with fast lead times to keep your projects on schedule.

For related high-density circular connector options, see our 12G Series Circular Connectors or review the MIL-DTL-38999 MS27467 Circular Connectors catalog.