A nut with a finished top that covers the end of the bolt. Bolts must be in the proper length.
The most common stainless steel for general hardware use.
A highly corrosion resistant grade of stainless steel. Ideal in salt water and chlorine environments. More expensive than 18-8.
A low carbon steel for general use. Chrome plated and polished for a mirror like finish.
A low carbon steel for general use. Nickel plated for a decorative finish.
Solid brass. An alloy of primarily copper and zinc with good corrosion resistance. Used mostly in decorative and electrical applications. Exact color varies.