Metric shoulder bolts

Material

• Stainless steel 18-8 (A-2)

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

• Stainless steel 316 (A-4)

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

• Class 12.9 alloy steel black oxide finish

  A high strength heat treated alloy steel. A heat-treated alloy steel for applications where very high strength and hardness are required. A chemically produced coating that leaves the steel surface with a matte black finish and offers mild corrosion resistance.