71-418618-66P

Overview

The Amphenol Aerospace Operations part number 71-418618-66P is a circular MIL-spec connector receptacle belonging to the MIL-DTL-38999 Series III family. It features an aluminum alloy shell with cadmium plating and bayonet coupling. The unit provides 6 positions using socket contacts, which are gold-plated copper alloy terminals designed for crimp termination. Rated for 600 VAC and 850 VDC, it supports current ratings of 7.5 A and 13 A depending on contact size. This straight wall-mount receptacle is engineered for high-reliability interconnect applications in demanding environments.

Feature Summary

• Bayonet locking mechanism ensures secure mating and rapid connection
• Cadmium-plated aluminum alloy housing provides corrosion resistance
• Gold-plated copper alloy contacts ensure reliable signal transmission
• Wall-mount installation style facilitates panel integration

Applications

• Military avionics systems
• Radar equipment interconnects
• Communication subsystems
• Test and measurement instrumentation

Procurement Notes

Verify the specific suffix codes against official Amphenol documentation to confirm exact shell finish, contact plating thickness, and environmental sealing requirements. Ensure compatibility with corresponding plug counterparts regarding keying and insertion arrangement. Confirm that the crimp tooling matches the specified contact size for proper termination integrity.

Selection Notes

Select this component when a MIL-DTL-38999 Series III receptacle with bayonet coupling is required. Verify that the 6-position layout aligns with system wiring needs. Consider the aluminum shell material for weight-sensitive applications. Ensure the operating temperature range and voltage ratings meet the specific circuit demands of the target assembly.

Part Context

This part belongs to the extensive MIL-DTL-38999 connector family, widely used in defense and aerospace sectors. The 71- prefix typically denotes Amphenol's manufacturing origin within this standard. These connectors are known for their ruggedness and ability to withstand harsh environmental conditions, including vibration and moisture exposure common in field-deployed equipment.

Replacement Considerations

Equivalent parts may include MS3116E18-6S or similar MIL-DTL-38999 Series III receptacles from other manufacturers. Cross-reference dimensions, pinout arrangements, and mounting hole patterns before substitution. Verify that alternative sources meet the same military specifications and environmental testing standards.