The ServoCity Zinc-Plated Steel Nylon-Insert Locknut (6-32 UNC, 5/16" Hex) - 25 Pack is crafted from durable alloy steel and features a zinc-plated finish for enhanced corrosion resistance. This locknut incorporates a nylon insert, providing a secure and reliable fastening solution by preventing loosening due to vibration or torque. Ideal for various mechanical and industrial applications, it ensures stability and longevity in assemblies.