71-418620-39F

Overview

The Amphenol Aerospace Operations part number 71-418620-39F is a circular MIL-spec connector plug. It features 39 positions with socket contacts, designed for crimp termination. The unit utilizes a size 20 shell in a straight configuration and complies with the MIL-DTL-38999 series III standard. The housing is constructed from aluminum alloy with an electroless nickel plating finish. This component is engineered for cable mounting applications using a threaded coupling mechanism.

Feature Summary

• Complies with MIL-DTL-38999 Series III specifications for high-density interconnects
• Features a robust aluminum alloy housing with protective electroless nickel plating
• Utilizes a threaded coupling style to ensure secure connection integrity
• Designed for reliable performance in demanding commercial aerospace environments

Applications

• Commercial aircraft avionics systems
• Aircraft airframe power distribution networks
• In-flight entertainment system connectivity
• Wire bundling and cable management assemblies

Procurement Notes

Verify the specific revision level of the MIL-DTL-38999 standard against current procurement requirements. Confirm that the electroless nickel plating meets environmental exposure criteria for the intended installation location. Ensure mating connectors share identical shell sizes and contact arrangements to guarantee proper interface compatibility.

Selection Notes

Select this component when a high-density 39-position circular connector is required for cable-mounted installations. The threaded coupling provides superior retention compared to bayonet styles. Verify that the crimp tooling matches the specified contact type for reliable electrical performance. Consider the weight reduction benefits inherent to the aluminum construction for aerospace applications.

Part Context

This part belongs to the extensive portfolio of circular connectors manufactured by Amphenol Aerospace Operations. These components are widely utilized in the commercial aerospace sector to address challenges related to space constraints and weight reduction. The design philosophy emphasizes simplified installation and minimal maintenance while maintaining high-performance signal transmission capabilities.

Replacement Considerations

Cross-reference with equivalent MIL-DTL-38999 Series III plugs from other qualified manufacturers. Verify that substitute parts maintain identical shell size, contact arrangement, and coupling thread specifications to ensure direct interchangeability without modifying existing harnesses or panels.