Push button switch, generic, two pins K switch sp3t ON-ON-ON D Switch, single pole normally-open tactile switch D Single Pole Single Throw (SPST) switch with ground pin http://www.ckswitches.com/media/1479/kmr2.pdf tactile push button, 6x6mm e.g. PHAP33xx series, height=9.5mm tact sw push 6mm tactile push button, 6x6mm e.g. PHAP33xx series, height=7.3mm tactile push button, 6x6mm e.g. PTS645xx series, height=9.5mm tact sw push PVA1.