Title: Fastening snap

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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. The female metal washer also has a central tube projecting therefrom and engaging through a central opening in the portion of the female metal fitting arranged to receive the head of the male fitting, this tube being then flared outwardly for anchoring purposes. In one embodiment of the invention, the male metal washer is formed with a reentrant periphery and the male metal fitting is formed with pawls adjacent its periphery which penetrate through the sheet material and extend into the reentrant periphery of the male metal washer where the pawls are bent reversely on themselves for anchoring of the male metal washer to the male metal fitting at their peripheries. In this embodiment, the female metal fitting has pawls adjacent its periphery which penetrate through the sheet material and extend into the reentrant periphery of the female metal washer where the pawls are bent reversely on themselves for anchoring. In a second embodiment of the invention, the male and female metal members are formed with the reentrant periphery and the pawls are formed adjacent the periphery of the respective metal washer.


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