Press Stud Button - Metal Or Plastic, Interlocking Disc Design | Decorative Cap Patterns, Secure Fastening Mechanism

A snap fastener (also called press stud, popper, snap or tich) is a pair of interlocking discs, made out of a metal or plastic, commonly used in place of traditional buttons to fasten clothing and for similar purposes. 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. The surface of cap and socket can be carved with decorative patterns, and the middle of socket is a hole with two parallel springs. The male side part is composed of stud and post. The middle of stud is a convex dot which will be clamped tightly by the spring when pressed into the hole of socket, producing a combined force to fix clothing.