Phillips Screws

Phillips screws are cross-head fasteners designed to allow controlled slipping (cam-out) under high torque. 

 Common driver sizes: 

 

 PH0: Very small electronics 

 PH1: Small screws and sensors 

 PH2: Most common hardware 

 PH3: Large fasteners 

 

 Correct Driver Fit 

 A proper driver: 

 

 Fully fills the screw head 

 Has minimal wobble 

 Engages all four contact points 

 

 Signs of Incorrect Fit 

 

 Stripping or rounding of the head 

 Slipping during tightening 

 Excessive force required 

 

 Using the correct driver size is one of the simplest ways to prevent hardware failure.