MS27505 MIL-DTL-38999 Square Flange Receptacle Connector

MIL-DTL-38999 MS27467 Circular Connectors

MS27505 Square Flange Receptacle Overview

The MS27505 is a square flange receptacle designed to the MIL-DTL-38999 standard, a widely specified circular connector format for military and industrial use. Its construction focuses on secure panel mounting and stable electrical performance in demanding environments. This connector is suited for applications where a fixed, reliable interface between equipment and cabling is required.

As a square flange receptacle, it is intended for fixed installation on equipment panels. It provides a stable electrical interface between equipment and cable assemblies, ensuring reliable signal or power transmission in harsh operating conditions. Its compact structure and high reliability make it applicable in aerospace systems, military equipment, industrial control systems, and transportation electronics.

Construction and Materials

Aluminum Alloy Shell

The connector features a high-strength aluminum alloy shell, providing a balance of mechanical strength and low weight. This material is common in military circular connectors due to its combination of strength, corrosion resistance, and lightweight characteristics. The housing is typically treated with protective coatings to enhance resistance to oxidation and environmental exposure, supporting long-term performance in high humidity, vibration, or temperature fluctuations.

Square Flange Panel Mount Design

The defining feature of the MS27505 is its square flange receptacle design. It is installed through a panel using a four-hole flange mounting structure, which ensures stable positioning and strong mechanical support. This mounting style provides several advantages:

• Secure attachment to equipment panels
• Improved resistance to vibration
• Easy installation and maintenance
• Reliable alignment with mating connectors

The square flange design helps maintain proper contact alignment, contributing to consistent electrical performance and reducing the risk of connection issues during operation.

Electrical Performance and Reliability

The MS27505 is engineered to deliver stable and efficient electrical connectivity. It supports precision contacts that ensure low contact resistance and reliable signal transmission. Its design helps maintain consistent electrical performance under demanding conditions such as vibration, temperature variation, and mechanical movement.

Key performance benefits include:

• Reliable signal and power transmission
• High insulation reliability
• Strong vibration resistance
• Long operational lifespan

These features make the connector ideal for applications where electrical stability is essential for system performance.

Selection and Application Guidance

When selecting this connector, consider the specific requirements of your application. The MS27505 is a receptacle, so it requires a corresponding plug for a complete connection. The connector supports 2 to 128 pins and is available in male or female configurations. The housing is made of aluminum alloy, and the contacts are brass plated with gold. The insulator material is PEI/PPS, and the locking system is bayonet type. The operating temperature range is -55°C to +125°C.

This connector is suitable for applications requiring a rugged, panel-mounted interface. It is not intended for applications requiring a waterproof seal while unmated, nor is it a field-wireable design. For specific electrical ratings, refer to the Technical Specifications section.

Inquiry Checklist

To ensure you receive the correct connector for your application, please provide the following information when making an inquiry:

• Required pin count and gender (male/female)
• Mating plug part number or series
• Panel thickness and mounting hole dimensions
• Wire gauge and cable outside diameter
• Electrical load requirements (current and voltage)
• Environmental conditions (temperature, vibration, humidity)
• Required order quantity

Related Products

For a complete interconnection solution, consider the mating plug connectors from the MIL-DTL-38999 series. You can also explore other circular connector options for different application needs.

12G Series Circular Connectors

MIL-DTL-38999 MS27467 Circular Connectors