50G Metric Phillips Fillister Head Screws Essentra Components 50G Metric Phillips Fillister Head Screws are designed to be used with a tapped or threaded insert hole. The fillister head prevents the screw from being over-tightened. These screws are lightweight and resistant to chemical, vibration, electrical, and corrosion. The 50G plastic screws are unaffected by oils or detergents and are an excellent choice for harsh environments. The screws are used in automotive components, electrical enclosures, and consumer products.