ABC03N-20P is a receptacle shell connector from the ABC series of modular and in-line composite connectors, configured with five size 20 contacts for aerospace, defense, and marine applications. The connector features a lightweight composite shell with nickel plating, environmentally sealed construction, and a secure quarter-turn locking system for reliable interconnection. It supports wire sizes from 24 to 20 AWG with rear-release AS29029 contacts that are field serviceable, and includes triple wire seals and molded contact retention for enhanced durability. The connector is corrosion resistant, fluid resistant, and provides EMI shielding greater than 40 dB from 100 to 1000 MHz, with salt spray resistance exceeding 1000 hours. Common applications include airframe systems, navigation equipment, rack and panel installations, missile defense systems, and both commercial and military aerospace platforms.