71-418620-41Y

Overview

The Amphenol Aerospace Operations part number 71-418620-41Y is a circular MIL-spec connector belonging to the MIL-DTL-38999 Series III family. It features a size 20 shell with a 39-position arrangement and utilizes female socket contacts. The connector employs a crimp termination method for wire attachment and is designed for cable mounting in a straight orientation. Constructed from aluminum alloy, it offers environmental resistance suitable for demanding operational conditions.

Feature Summary

• Bayonet coupling mechanism provides rapid connection and secure locking
• Aluminum alloy housing ensures structural durability and weight efficiency
• Crimp terminal interface supports reliable electrical continuity
• Environmental sealing protects against fluid and moisture ingress

Applications

• Military avionics systems
• Naval shipboard equipment
• Ruggedized ground vehicle electronics

Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm exact contact plating and environmental sealing specifications. Ensure compatibility with mating connectors within the same MIL-DTL-38999 Series III standard. Confirm that the crimp tooling matches the designated contact size requirements for proper termination integrity.

Selection Notes

Select this component when a high-density circular connector is required for cable-mounted applications. The size 20 shell accommodates 39 positions, making it suitable for complex signal routing. Verify that the bayonet coupling style aligns with the system's assembly speed requirements and that the aluminum construction meets the weight constraints of the platform.

Part Context

This component is part of the extensive MIL-DTL-38999 Series III connector portfolio manufactured by Amphenol Aerospace. These connectors are engineered for harsh environments, offering superior performance compared to earlier series. The 71- prefix typically denotes commercial or industrial variants that maintain military-grade reliability standards while adhering to specific industry compliance requirements.

Replacement Considerations

Compatible substitutes include MS3476L20-41S and JT06RE-20-41SA. Verify dimensional interchangeability and contact alignment before substitution. Ensure the replacement unit maintains the same bayonet coupling and crimp termination characteristics.