Metric shoulder bolts (domestically produced), 16mm shoulder (12mm x 1.75mm thread) x 80mm

Also known as A-2 stainless, 18-8 is the most common grade of stainless steel for general use.

Also known as A-4 stainless, 316 is a highly corrosion resistant grade of stainless steel. Ideal in salt water and chlorine environments.