For electrical termination,the tightness of terminal screw important to avoid sparking and can burn out the electrical cable.It also can cause serious damage for equipment or machine.
That why manufacture design the special terminal screw head for more torque when fastening the screw.We can found terminal screw used in switch board,circuit breaker,fuse box,terminal block and relay.
The special design for screw head is combination profile from Phillips and slotted or Pozidriv and slotted.This combination very unique because it can reduce slipping and more torque transfer when we fasten the terminal screw.
