TPF21MGPC004 - 

TE Connectivity TP Series Miniature PCB Mount Pushbuttons
TP Series miniature PCB through mount pushbuttons with a thermoplastic housing and gold contacts. These TP Series miniature PCB through mount pushbuttons are available with rectangular or round extended actuators and vertical or right angle mounting. TP Series miniature PCB through mount pushbuttons have square actuators without bushing TPA Series miniature PCB through mount pushbuttons have round actuators without bushing TPB Series miniature PCB through mount pushbuttons have round actuators with 4.78mm unthreaded bushing TPC Series miniature PCB through mount pushbuttons have round actuators with 10/48 UNS 2B thread TPF Series miniature PCB through mount pushbuttons have round actuators with 1/4-40 UNS 2B thread