A 'BOUT M5 X 16' is a metal screw with a diameter of 5 millimeters and a length of 16 millimeters. This bolt is commonly made of stainless steel or steel with a zinc coating for added corrosion resistance. It features metric threading and is ideal for various assembly and construction applications. Uses range from securing panels in machinery to fastening components in electronic devices. The M5 size refers to the outside diameter of the threading, making this bolt suitable for use in standardized metric threaded fittings.