The 4-1703808-1 is a tab flange housing component for HDSCS connectors, specifically designed for 4-position Group B configurations with 2.8 mm contact size. This connector housing is available in multiple keying colors including black, gray, green, and blue, providing visual identification and mating security. The tab flange design enables secure panel mounting with integrated locking mechanisms, supporting panel thicknesses from 1.0 to 3.5 mm when used with appropriate fixing slides. The housing is constructed from glass-filled PBT material with molded-in copper alloy contacts that are tin or gold plated, ensuring reliable electrical performance in industrial and commercial transportation applications. This component is commonly used in harsh environments requiring sealed, keyed connectors for power distribution, signal transmission, and data communication in automotive, industrial control, and transportation systems.