3 self drilling screws

The dimensions 10 16x3 4 denote the size of this specialized screw. In this context, '10' typically refers to the gauge of the screw, which signifies its thickness. The '2016' could represent the length in millimeters, indicating a screw that is 20.16mm long. The '3 4' might denote the drill point size, suggesting a drill bit diameter of 3.04mm. These specifications make the 10 16x3 4 self-drilling screw versatile enough to handle different materials and applications.

...

The functionality of metal expansion nuts centers around the principle of mechanical expansion. Upon the application of torque, the screw or bolt is threaded into the nut, which, in turn, causes the nut to expand outward. This outward expansion presses the sides of the nut against the inner walls of the hole it occupies, creating a tight fit. The added friction and mechanical grip prevent the nut from loosening over time, even in dynamic conditions.


...