Acorn Cap Hex Nuts made from Stainless Steel 18-8. These are domed cap hex nuts. 18-8 Stainless Steel is also called A2 or 304. Acorn 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: 1/4"-20 nut for a 1/4"-20 screw).