USS flat washers, 5/16"

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

Grade 5 falls between grade 2 and grade 8 in strength, and is commonly found in automotive applications. A low carbon steel for general use. Zinc plated for moderate corrosion resistance.

Grade 8 is stronger than grade 5, and is commonly found in high strength automotive applications. A low carbon steel for general use. Zinc plated for moderate corrosion resistance.

A low carbon steel for general use. Chrome plated and polished for a mirror like finish.

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