The M12 Hex Kep Lock Nut from Metallics West Inc is crafted from 18-8 stainless steel, ensuring excellent corrosion resistance and durability. Available in a jar of 100, these lock nuts feature a unique design that prevents loosening under vibration, making them ideal for automotive and machinery applications. The hex shape allows for easy tightening with standard tools, ensuring a secure fit. Suitable for both indoor and outdoor use, these lock nuts are a versatile addition to any toolbox. Their high-quality construction makes them a preferred choice for professionals and DIYers alike.