The connectors in the top row of the image are known as ring terminals and spade terminals (sometimes called fork or split ring terminals). 电接触是通过环或铲的平坦表面实现的, 而通过机械方式将螺钉或螺栓穿过它们进行连接. 铲形端子形状因数有利于连接，因为在拆卸或连接铲形端子时，螺钉或螺栓可以部分旋入. Their sizes can be determined by the size of the conducting wire AWG and the screw/bolt diameter size designation.
