Coupling nuts

Material

• Stainless steel 18-8

  A corrosion resistant steel alloy. The most common stainless steel for general hardware use.

• Stainless steel 316

  A corrosion resistant steel alloy. A highly corrosion resistant grade of stainless steel. Ideal in salt water and chlorine environments. More expensive than 18-8.

• Zinc plated steel

  A low carbon steel for general use. Zinc plated for moderate corrosion resistance.

• Steel plain finish

  A low carbon steel for general use. Unplated finish.

• Hot dipped galvanized steel

  A low carbon steel for general use. Hot dipped galvanized is a coating for very good corrosion resistance.