A non-insulated terminal is an electrical connector used to connect or secure a wire, which is usually made of metal material and does not have an insulating function. Non-insulated terminals are widely used in electrical and electronic equipment, automotive industry, home appliances and other fields.

Non-insulated terminals are usually made of conductive materials (such as copper, aluminum, etc.) and have good conductivity properties to achieve reliable electrical connections. They come in a variety of shapes and sizes, including round, flat, U-shaped, F-shaped, etc., to suit different connection needs. Non-insulated terminals can be bolted, crimped, or welded to the wire.