Dome Nuts or Acorn Nuts come in two styles, one piece and two piece. A one piece Done Nut is made from a solid piece of stainless steel. The 2-piece Dome Nut is made from 2 pieces of Stainless fused together. The 2 piece Dome Nuts is the best looking option with a lower overall profile and made to a high-polish finish. The 1 piece Dome Nut is made to the Din 1587 standard and is more economical.
Cap nuts are hex nuts with a dome top that resembles an acorn nut or crown.cap nuts are also known as: acorn nuts, crown nuts, dome nuts, hex cap nuts. Used alone or as a cap for a hex or jam nut, cap nuts serve a decorative purpose by concealing the threaded end of a fastener or acting as a cover for protruding, They also come in both 316 (also known as A4) and 304 (also known as A2 or 18-8) grades with different tensile strength options.