The M85049-51-1-20W is an aviation-grade strain relief clamp (backshell accessory) used in aerospace electrical connector systems. It is designed to secure and support cable assemblies at the rear of circular connectors, reducing mechanical stress, preventing wire pull-out, and improving long-term reliability in high-vibration environments.

This component is part of the MIL-SPEC M85049 series and is commonly used with military and aerospace circular connectors (e.g., MIL-DTL-26482, MIL-DTL-5015, and related connector families). The “W” finish variant typically indicates a corrosion-resistant protective coating suitable for harsh environmental conditions.

Key features include:

MIL-SPEC M85049-series strain relief clamp / backshell accessory
Right-angle (90°) cable exit design for routing flexibility
Provides mechanical strain relief at connector termination points
Protects wiring harnesses from vibration, flexing, and fatigue
Aluminum alloy construction with protective corrosion-resistant finish (W variant)
Compatible with aerospace and defense connector systems (shell size 20)
Used in aircraft electrical harness routing and installation
Helps maintain connector integrity in high-vibration environments
Designed for certified aerospace maintenance and assembly procedures
Ensures secure cable management and long-term system reliability