106527-4 is an AMP-DUAC receptacle header connector designed for wire-to-board interconnection applications. This 4-position connector features a 4.2 mm (0.165 inch) centerline spacing and is constructed from nylon material with a UL 94V-2 natural color rating. The connector accommodates wire sizes ranging from 22-18 AWG (0.3-0.8 mm²) with insulation diameter range of 1.5-2.4 mm (0.059-0.094 inches). It is manufactured with phosphor bronze female contacts and includes tin/gold plating options. The connector is RoHS compliant and suitable for computer peripherals, business machines, and commercial equipment requiring reliable multi-lead connections.