Domed Cap Nuts in Stainless Steel, also called acorn nuts. Made from A2 Stainless Steel 18-8 (A2). DIN 1587
Acorn cap nuts serve two main purposes: to cover and protect threads and to decorate (or finish) the project.
Nut Size is the size of the screw that the nut is for (Example: M8 nut for a M8 screw).