Need a nut that won't shake loose? These M12 nylock nuts are your solution. This pack gives you 12 nuts, all with the clever nylon insert (that's the 'nylock' part) that creates friction against the bolt thread, preventing them from backing off due to vibration or movement. They're zinc plated, which gives them a good layer of corrosion resistance for most indoor or general industrial applications (just a heads-up, they're not recommended for constant exposure to saltwater/marine environments). The M12 size refers to the metric thread, perfect for 12mm bolts. They're designed to be used with a wrench or socket, allowing you to torque them down securely. They're ideal for high-strength fixings where safety and reliability are key – think machinery, automotive work, furniture assembly, or any DIY project involving metal, plastic, or wood where you need a lock that stays put. The surface treatment helps protect against oxidation. A simple, essential hardware item for any well-stocked toolbox.