Hexagonal Shape: Hex nuts feature a six-sided shape for easy wrench operation and effective fastening. Internal Threads: These nuts have internal threads for secure attachment to bolts or studs. Smooth Surface: Finished surfaces ensure easy rotation and installation without burrs. Standard Sizes: Available in various sizes and thread specifications to suit different requirements. Anti-loosening Design: Some nuts feature designs to prevent loosening, ensuring reliable connections. Corrosion Resistance: Special coatings or treatments enhance durability and resist rust.