71-418620-39T

Overview

The Amphenol Aerospace Operations model 71-418620-39T is a circular MIL-spec connector plug designed for demanding environments. It features 39 positions with socket contacts and utilizes a size 20 shell in a straight configuration. The component adheres to the MIL-DTL-38999 series standards and employs crimp termination for secure wiring connections. Constructed from aluminum alloy, it offers durability while maintaining a lightweight profile suitable for aerospace applications. The threaded coupling style ensures reliable engagement under vibration and shock conditions.

Feature Summary

• Threaded coupling mechanism provides secure connection integrity
• Aluminum alloy construction balances strength and weight reduction
• Crimp termination ensures robust electrical contact stability
• Straight cable mounting style facilitates streamlined installation

Applications

• Military jet aircraft avionics systems
• Naval ship communication equipment
• Helicopter flight control instrumentation
• Ruggedized ground vehicle electronic interfaces

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm material plating and environmental sealing ratings. Ensure compatibility with mating receptacles regarding shell size and contact arrangement. Confirm that the crimp tooling matches the specified contact type for proper assembly. Check for any recent design changes or obsolescence notices directly from Amphenol Aerospace before finalizing procurement orders.

Selection Notes

Select this component when a high-density circular connector is required for cable-mounted applications. The size 20 shell accommodates 39 contacts within a compact form factor. Verify that the operating environment temperature range aligns with the connector's specifications. Ensure the mating interface supports threaded coupling for enhanced vibration resistance compared to bayonet styles.

Part Context

This part belongs to the MIL-DTL-38999 Series III family of circular connectors. These connectors are widely used in aerospace and defense sectors due to their standardized dimensions and performance capabilities. The series offers various shell sizes and contact arrangements to meet diverse interconnect needs. Amphenol Aerospace manufactures these components to strict military specifications ensuring reliability in harsh operational conditions.

Replacement Considerations

Compatible substitutes include other manufacturers' MIL-DTL-38999 Series III plugs with matching shell size 20 and 39-position arrangements. Verify that alternative parts maintain identical thread pitch and coupling nut dimensions. Cross-reference contact gender and termination style to ensure mechanical and electrical interchangeability without redesigning the harness.