71-418618-66T

Overview

The Amphenol Aerospace Operations part number 71-418618-66T is a circular MIL-spec connector plug. It belongs to the MIL-DTL-38999 Series III family, designed for high-density interconnect applications in harsh environments. The component features a size 18 shell with a threaded coupling mechanism and straight cable installation style. It utilizes crimp termination for reliable wire attachment and includes gold-plated copper alloy contacts to ensure low contact resistance and corrosion resistance. The unit provides 30 positions, supporting robust signal and power transmission across various industrial and aerospace sectors.

Feature Summary

• MIL-DTL-38999 Series III compliance for rigorous environmental durability
• Threaded coupling interface ensuring secure mechanical connection
• Gold-plated contacts for enhanced conductivity and oxidation resistance
• Crimp termination method for stable wire-to-contact bonding

Applications

• Avionics systems requiring high-density interconnects
• Aircraft control and instrumentation circuits
• Harsh environment military equipment connections
• Industrial automation signal distribution

Procurement Notes

Verify that the specific suffix matches the required contact configuration and shell finish. Confirm compatibility with mating receptacles of the same series and size. Ensure the crimp tooling aligns with the specified contact sizes. Check for any special handling requirements due to the sensitive nature of precision connectors. Validate that the supplier provides traceability documentation consistent with aerospace standards.

Selection Notes

Select this model when a MIL-DTL-38999 Series III plug is required for space-constrained installations. The size 18 shell offers a balance between pin count and physical footprint. Choose the threaded version over bayonet styles if higher vibration resistance is needed. Consider the crimp termination requirement against available assembly tools. Evaluate the straight cable entry against routing constraints within the enclosure or panel.

Part Context

This component is part of the extensive Amphenol 26482/38999 product line, widely used in defense and commercial aviation. It represents a standard solution for replacing legacy connectors with modern, high-reliability alternatives. The design supports both silver and gold plating options depending on the application's electrical and environmental needs. It serves as a critical link in complex wiring harnesses where signal integrity is paramount.

Replacement Considerations

Compatible substitutes include JT06RE-18-66SB(301) from the same manufacturer family. Verify that alternative sources maintain identical shell size, thread type, and contact arrangement. Cross-reference mating dimensions to ensure interchangeability without modification. Confirm that the replacement meets the same MIL-DTL-38999 specifications.