71-529638-21S

Overview

The Amphenol Aerospace Operations part number 71-529638-21S is a circular MIL-spec connector receptacle. It belongs to the JT00 series, conforming to MIL-DTL-38999 Series I standards. The component features a 21-shell size and utilizes a 22-21 insertion arrangement with 21 socket contacts. It employs a crimp termination method for wire connections. The housing is constructed from aluminum alloy with an olive drab cadmium electroless nickel finish. This straight cable-mount receptacle is designed for secure environmental sealing in demanding operational conditions.

Feature Summary

• Constructed with a rugged aluminum alloy shell for structural integrity
• Features a self-locking threaded coupling mechanism for secure engagement
• Designed for reliable performance in harsh environmental conditions
• Utilizes gold-plated copper alloy contacts for low resistance

Applications

• Military avionics systems
• Defense communication equipment
• Radar and navigation subsystems
• Ground support electronic test sets

Procurement Notes

Verify the specific datasheet revision and manufacturing origin before procurement. Confirm that the crimp tooling requirements match the contact specifications. Ensure compatibility with mating plugs regarding keying and pinout arrangements. Check for any restricted material lists or export control classifications applicable to this military-grade component.

Selection Notes

Select this component when a compact, high-density circular connector is required for panel or cable mounting. The 21-shell size offers a balance between contact count and physical footprint. Ensure the operating environment temperature range aligns with the standard MIL-DTL-38999 specifications. Verify that the crimp termination style suits the available wiring harness infrastructure.

Part Context

This part is part of the extensive Amphenol Aerospace interconnect portfolio, specifically within the JT00 family of MIL-DTL-38999 connectors. These connectors are widely recognized for their reliability in aerospace and defense applications. The 71-529638-21S designation identifies a specific configuration within this standardized series, ensuring interchangeability with other manufacturers' compliant parts.

Replacement Considerations

Compatible replacements include equivalent MIL-DTL-38999 Series I receptacles from other qualified manufacturers. Verify that substitute parts maintain the same shell size, insertion arrangement, and contact type. Ensure that environmental sealing ratings and electrical characteristics meet or exceed the original specifications.