This anti-loss spacer is similar to our standard spacers TU, but with a specially configured I.D. designed to grip the screw shank. The anti-loss spacer slides on the screw easily, but is retained on the screw, for quick, easy assembly. We offer a big range of PA66 (nylon) screws, please visit our range: Screws & Nuts. The retaining washer can be supplied in dyed colours, please contact us.