Hinges are a common component used in doors, cabinets and other projects. Consisting of a mechanical bearing — typically with two leaves, a knuckle and a pin — and are designed to offer a limited angle of rotation when installed. While all hinges serve this basic purpose, some of them use a different design than others.   AFT Fasteners offers a wide range of die-cast zinc hinges, aluminum hinges, plastic hinges, and detent hinges to meet the needs of your project.