Snap Fastner

Snap Fastener Summary     

       Snap fastener, generally made of metal of plastic and known also as snap button, press button, snap, popper and press stud, is a pair of interlocking discs commonly used in place of buttons to fasten clothing (it fastens with a snapping sound). A circular lip under one disc fits into a groove on the top of the other, holding them fast until a certain amount of force is applied. However, some snaps consist of four pieces, i.e. cap, socket, stud and post.

Snap fastener  : the male half features a groove which is snapped in place by the female half

Snap button : made of metal, consists of four pieces

       The two halves of a "snap"; the male (top) half features a groove which is "snapped" in place by the female (bottom) half

       Snap fastener (also called snap, popper, and press stud) is a pair of interlocking discs commonly used in place of buttons to fasten clothing. A circular lip under one disc fits into a groove on the top of the other, holding them fast until a certain amount of force is applied. Snap fasteners are often used in children's clothing, as they are relatively easy for youngsters to use.

       Snaps can be attached to fabric by hammering (using a specific punch and die set), plying, or sewing. For plying snap fasteners, there are special snap pliers.

       Snap fasteners were first patented by German inventor Heribert Bauer in 1885 as the "Federknopf-Verschluss", a novelty fastener for men's trousers. Some attribute the invention to Bertel Sanders, of Dennmark. These first versions featured an S-shaped spring in the top disc instead of a groove.