A “countersunk rivet” typically has a flat head and can have a tubular or solid shank rivet. Among the raw materials used to produce these rivets is steel, stainless steel, aluminium, brass, and copper. A “countersunk rivet” typically has a flat head and can have a tubular or solid shank rivet. Among the raw materials used to produce these rivets is steel, stainless steel, aluminium, brass, and copper.