Typically manufactured from either low carbon steel or stainless steel, cap nuts, also referred to as acorn nuts are used to cover exposed bolt ends and add a finished appearance. These stainless steel cap nuts are composed of a hex nut and top cap consisting of 18% chromium and 8% nickel for corrosion resistance. Good for exterior and most marine applications.

Typically manufactured from either low carbon steel or stainless steel, cap nuts, also referred to as acorn nuts are used to cover exposed bolt ends and add a finished appearance. These carbon steel cap nuts are composed of a hex nut and a top cap manufactured from 1006 to 1010 carbon steel. They are nickel plated for appearance.