The mechanical performance of bolts depends greatly on the material used, and the heat treatment. Below are several options offered by JC Grand.
- Grade 2. Zinc plated low carbon steel. Best for general hardware use where high strength is not required.
- Grade 5. Made from medium carbon steel, tempered and zinc plated. Best for automotive use and other areas where higher strength is desired.
- Grade 8. Made from medium carbon alloy steel, tempered and yellow zinc plated. Best suited for applications where high strength and hardness is required.
- Stainless Steel generally has high corrosion resistance. Stainless has become the material of choice for exterior and most marine applications.
- Silicon Bronze is an alloy of copper with greater strength and corrosion resistance than brass. Most commonly used in wood boat building and restoration.
- Hot Dipped Galvanized fasteners are much more corrosion resistant than zinc plated fasteners. Due to the thickness of the galvanized coating, galvanized bolts will only work with galvanized nuts. For exterior and coastal area use.
- Grade 5 Chrome has a bright mirror-like finish providing sharp looks for a variety of applications.


