71-490003-08S

Overview

The Amphenol Aerospace Operations part number 71-490003-08S is a circular MIL-spec connector component. It belongs to the D38999 series, specifically conforming to MIL-DTL-38999 standards. The unit is designed as a receptacle with a jam nut mounting style for panel installation. It features an 8-position configuration utilizing socket contacts. The shell material is composite, providing structural integrity while managing weight. The contact interface supports crimp termination methods for reliable wire attachment. This component is engineered for high-reliability applications in demanding environments.

Feature Summary

• Jam nut receptacle design for secure panel mounting
• Composite shell construction for lightweight durability
• Crimp termination method for robust electrical connections
• MIL-DTL-38999 compliance for ruggedized performance

Applications

• Military avionics systems
• Defense communication equipment
• Ruggedized industrial control panels

Procurement Notes

Verify the exact datasheet version and environmental sealing ratings before procurement. Confirm that the jam nut mounting style aligns with your panel thickness requirements. Ensure compatibility with mating plugs regarding keying and pinout arrangements. Check for specific RoHS or REACH compliance documentation if required by your supply chain regulations. Validate that the composite shell material meets your operational temperature constraints.

Selection Notes

Select this component when a compact, high-density circular connector is required for panel-mounted applications. The jam nut style offers superior vibration resistance compared to bulkhead mounts. Consider the composite shell for weight-sensitive platforms where metal shells are prohibitive. Ensure the crimp tooling matches the specified contact size for proper termination. Verify that the 8-position layout fits within your available panel space constraints.

Part Context

This part falls under the Amphenol D38999 III series of circular connectors. These connectors are widely used in aerospace and defense sectors due to their standardized form factor and reliability. The series includes various shell sizes and contact arrangements to suit different power and signal transmission needs. The 71- prefix often denotes specific manufacturer coding within the broader MIL-spec ecosystem.

Replacement Considerations

Cross-reference with MS3106 or MS3112 series equivalents if military interchangeability is required. Verify dimensional compatibility with existing panel cutouts when substituting. Ensure mating connector interfaces match in terms of contact type and arrangement.