Fastening solutions industry uses various metals and its components for producing different types of fasteners. However certain metals and combination of metals do have some properties which make them a unique choice in many constructions. Iron when combined with carbon forms into a metal alloy called carbon steel which is the widely used alloy in the fastening solutions industries. Steel is another component of metal composite materials which is used in many industries as they are easily maintained. Aluminum fasteners are used in light weight constructions and these are preferred over other heavy metal combinations of fasteners. Titanium is another metal alloy which is frequently used in automotive industries.