277157-1 is a COPALUM Lite sealed terminal designed for rugged aerospace electrical applications, providing up to 60% weight reduction compared to copper terminals through optimized aluminum alloy construction. The terminal features a single-step dry crimp process that simultaneously terminates the conductor and creates a watertight seal without requiring messy greases, utilizing a perforated insert in the crimp barrel to penetrate aluminum oxides for oxide-free termination. It is qualified for commercial aircraft use and operates at a temperature rating of 175°C with a sealed crimp pressure of 80 psi, maintaining salt spray resistance for 500 hours. The terminal's smooth barrel design enables snag-free wire insertion with a generous lead-in for easy conductor placement, and it is compatible with existing crimp heads and power units. Common applications include primary power feeders, grounding systems, and unmanned aerial vehicles where lightweight, reliable connectivity is essential.