A Heavy Hex Nut is a type of nut that is thicker and has a larger width across the flats compared to a standard hex nut. Its design offers increased strength and durability, making it ideal for heavy-duty applications where higher load-bearing capacity is required. The thicker body provides added resistance to wear, deformation, and loosening under high-stress conditions. ... Heavy hex nuts are typically made from materials like carbon steel, stainless steel, or alloy steel for enhanced strength and corrosion resistance. They are commonly used in industries such as construction, heavy machinery, and structural applications, where robust and secure fastening is essential.