Abstract: A small size snap fastener comprises male and female members formed of thin sheet metal, and each including a metal fitting and a washer. In each case, the metal fitting engages one surface of sheet material and the washer engages the opposite surface thereof, with the metal fitting and the washer firmly gripping the sheet material to an extent sufficient to prevent slipping caused by tearing or rupture of the sheet material at the location where the member is secured to the sheet material. The male metal fitting includes a head having releasable snap engagement in a recess in the associated female metal fitting. The male washer has a central fitting extending therefrom and penetrating through the sheet material to engage in the interior of the head of the male metal fitting and be flared outwardly therein for anchoring.