Natural PA Anti-Loss Washer Retaining Washer - 4 mm | 0.156 in; 6.8 mm | 0.266 in; Thickness 3.2 mm | 0.125 in; Compatible Screw Sizes #4

Designed to grip outside of screw shank. Easily slides on to the screw and is retained by the screw once assembled. Ideal when pre-assembly of the screw and washer is required. Reduces assembly time and cost.