types of security screws

Foliv hexagon head screw contains 7 specifications (19 sizes total) with 7 matching wrenches for easy application, which generally includes 4-40, 6-32, 8-32, 10-24, 1/4″-20, 5/16″-18, 3/8″-16, packed in a plastic box, easy to install. Foliv hex socket screw with coarse threads has a cup point with a thin edge that digs into the contact surface for a secure hold.