Choosing the right length and diameter for different applications
When selecting the right screw length and diameter, it is important to take into account the nature of the material to which you are attaching, the depth of the screw to be fixing material, the load the screw will carry and other environmental factors.
Length: A screw must be screwed into the material sufficiently to provide a firm grip without protruding through the other side. In wood, the screw should go into the wood at least 2/3 of its length to provide sufficient strength.
In metal applications, the screw should also be tightened sufficiently for stability.
Diameter: The diameter of the screw should match the material and the forces it is subjected to. A screw that is too thin can easily break or become loose, while a screw that is too thick can damage the material. Follow the manufacturer's recommendations or standard guidelines to choose the right diameter.