design of foundation bolt

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.


...

Hexagonal head bolts come in a wide range of sizes and materials to suit different applications. The size of a bolt is typically specified by its diameter and length, with the diameter measured in millimeters (mm) or inches (in). Common materials used for hexagonal head bolts include carbon steel, stainless steel, alloy steel, and aluminum. Each material offers its own set of advantages and disadvantages, depending on the specific requirements of the application.

...