Spade Connectors can be used to connect a wire to an electronic circuit and to a stud or screw type used for an electrical connection.

They are also another way to join wires together . You get the option of buying insulated Spade Connectors or non-insulated Spade Connectors. If you use the non-insulated Spade Connectors it is wise to use insulation tape around them so that if they come loose they don’t touch other steel parts (or the chassis such as in a car) and cause a short which could result in damage or even a fire.

Female Spade connectors are used also for attaching wires to Relays and the like as we can see in Image 1 below.