plastic snap fastener t-8 t-5 t-3 button kaihao accessories

Product material: Plastic

A four-pin button is a type of button, commonly known as a spring button or sewn button. The four-pin button relies on an S-shaped spring for connection. It is divided into four parts—A, B, C, and D—from top to bottom: Part A and B are called the mother buttons, with patterns engraved on the wide side and a hole in the middle, along with two parallel springs on the edges; Part C and D are called the father buttons, with a round dot protruding from the middle. This dot fits into the hole of the mother button and is then clamped by the springs, creating a closing force to secure clothing. Four-pin buttons have a wide range of uses and can be applied to various types of clothing, luggage, handbags, shoes, hats, packaging, etc.