The Chipboard Screw can be also called Screw MDF or Screw for Particleboard. This type of screw is designed with a countersunk head, a slim shank with coarse thread and a self-tapping point. 1. Drive: Chipboard screw usually are with Pozi drive or Philips drive; 2. Zinc: Chipboard screw usually is yellow zinc plated or white-blue zinc plated; Email: sales@hbporay.com