Metric shoulder bolts (domestically produced), 5mm shoulder (4mm x 0.7mm thread) x 45mm

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.