Harwin Datemate L-Tek Series Female Crimp Contacts. Datemate L-Tek series female crimp contacts for use in Datemate L-Tek series female crimp housings. These female crimp contacts are gold plated and are rear insertable into the connector. Stock number ; 511-654 511-654 is a large bore contact and accepts a wire size of 22 AWG. Stock number ; 511-658 511-658 is a small bore contact with a small bore indent groove that accepts a wire size range of 24 to 28 AWG. For crimp tool see stock number ; 314-7604 314-7604 For contact insertion and removal tool see stock number ; 511-759 511-759