Terminal Screw

A terminal screw is a precision-engineered fastener designed specifically for electrical connections in motor terminal blocks. It functions as the clamping mechanism that physically secures wire conductors to the terminal block's conductive elements, ensuring reliable electrical contact and mechanical stability. These screws are engineered to withstand vibration, thermal cycling, and electrical current while maintaining consistent torque and contact pressure.

The terminal screw operates on the mechanical clamping principle. When tightened, it applies controlled pressure to compress the electrical conductor against the terminal block's contact surface, creating a low-resistance electrical path. Proper torque ensures optimal contact pressure—too little causes high resistance and overheating, while too much can damage conductors or strip threads. The screw's design often includes features like captive washers or flanged heads to distribute pressure evenly and prevent loosening from vibration.