Carriage bolts, 18, 1-3/4"

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

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. Unplated finish.