MS27473E14B35S MIL-DTL-38999 37-Pin Circular Connector

MS27467 Circular Connectors

MS27473E14B35S Circular Connector Overview

The MS27473E14B35S is a high-reliability circular connector engineered for demanding aerospace and industrial environments. As part of the MIL-DTL-38999 Series II family, this connector is designed to deliver secure, stable electrical connections where performance and safety are critical. Its construction focuses on withstanding extreme temperatures, vibration, and mechanical stress, making it a dependable choice for mission-critical systems.

Key Selection Criteria for the MS27473E14B35S

When evaluating this connector for your application, consider these primary decision points:

• Configuration and Gender: This model is a socket (female) connector with 37 cores. Ensure your mating plug (male) matches the shell size and pin arrangement.
• Environmental Resistance: The aluminum alloy housing and corrosion-resistant materials are built for harsh conditions, but verify the specific temperature range and sealing requirements of your installation.
• Mating Mechanism: The threaded coupling provides a secure, vibration-resistant connection. Confirm the required mating torque and tooling for your assembly process.
• Contact Termination: The brass contacts are plated with gold for reliable conductivity. Confirm the appropriate wire gauge and termination method (crimp or solder) for your cable.

Construction and Material Benefits

The MS27473E14B35S is built for longevity. The housing is machined from aluminum alloy, offering a high strength-to-weight ratio suitable for airborne and mobile equipment. The contacts, made of brass and plated with gold, ensure low contact resistance and resistance to corrosion. This material combination is specifically chosen to provide reliable performance over a long service life, even under continuous vibration and thermal cycling.

Suitable Applications and Boundaries

This connector is well-suited for avionics systems, industrial controls, and other high-reliability electronics where a secure connection is non-negotiable. Its design is optimized for applications that demand resistance to mechanical stress and extreme conditions.

However, it is not intended for applications requiring frequent, tool-less mating, nor is it a substitute for connectors with higher IP ratings in submerged or high-pressure washdown environments. For applications involving continuous flexing of the cable, a strain relief or backshell with appropriate cable clamping must be used to protect the termination points.

Installation and Mating Considerations

Proper installation is key to achieving the connector's rated performance. The threaded coupling mechanism requires the mating plug to be fully seated and tightened to the specified torque to maintain environmental sealing and vibration resistance. Before installation, verify the pinout diagram against your system's wiring schematic to ensure correct core assignment.

Inquiry Checklist for Ordering

To ensure you receive the correct connector for your system, please have the following information ready when making an inquiry:

• Mating plug part number and shell size to confirm compatibility.
• Detailed pinout or wiring schematic for the 37 cores.
• Cable outside diameter and conductor gauge for backshell and contact selection.
• Specific environmental requirements (temperature range, exposure to fluids).
• Required order quantity and any custom marking needs.

For more information on the broader series, you can review the MS27467 Circular Connectors catalog. To understand how this connector family is applied in extreme environments, see our case study on MIL-DTL-38999 Connectors in Downhole Tools.

If you have a specific application in mind or need assistance with configuration, please contact our sales team via the inquiry form or WhatsApp to discuss your requirements.