With positive snap feel, the NC Series SPST momentary key switch offers actuators in square, square concave, post, oval and square with raised edge styles. Number cover color options along with cap styles and colors make the NC momentary push button switch extremely versatile. This unit features PC pin terminal options and comes with an electrical life of 1,000,000 cycles. The terminals are constructed with a silver-plated copper alloy and the housing is made from 6/6 nylon.