A sash latch for retractable engagement with a side jamb of a window, the sash latch comprising an upper member with an upper surface and a lower surface, a spring cavity with a stop wall, forward and rear slots for engagement with an upper surface of the sash, an extension with a notch, the extension for retractable receipt into an opening in a side jamb of the window. The latch also includes a lower member and a plunger arm with a distal end extending outwardly from the support member, the distal end including an engagement nub, a spring with a first end and a second end for receipt into the spring cavity of the upper member, the first end of the spring for contact with the stop wall of the upper member, the second end of the spring for engagement with the engagement nub of the plunger.