Grade 5 hex nuts have internal machine threads, for use with machine thread bolts and screws. The most versatile and widely used nut. ANSI B1.1 UNC and UNF Class 2B thread requirement. Zinc plating, retards the corrosion rate in a normal atmosphere.
Hex nuts have internal machine threads, for use with machine thread bolts and screws. Grade 2: made of low carbon steel, these fasteners are applicable for most low strength commercial and industrial uses.
Plow bolts are used for attaching the cutting edge of a plow to the plow blade. A tempered medium carbon steel. Grade 5 falls between grade 2 and grade 8 in strength, and is commonly found in automotive applications.