The Samtec SSQ series PCB through hole board-to-board square post has square tailed socket strip with a 2.54mm pitch, a black, liquid crystal polymer insulator and phosphor bronze Tiger Buy contact with 0.51μm gold plating on the contact. It has 8 contactStandard and low insertion force contact with .025' (0.635 mm) square tail for self-nesting applicationVoltage rating 465 VAC / 655 VDC