A nut that stays tight. Nuts exposed to high levels of vibration can become loose. The solution is a nylock nut. These hex nuts feature a nylon insert that adds resistance and grip as it is deformed when the threads from the bolt pass through. Once tightened, the nylon insert prevents the nut from working itself loose. Great for securing hardware and equipment installed in or near the engine room. Make sure bolted gear remains secure even when exposed to vibration using nylock nuts. Key Features Keeps through-bolted equipment and hardware tight in areas of high vibration18-8 stainless steel for an excellent blend of strength and corrosion protection Eliminates need for messy thread locking compounds Available in commonly used sizes and thread pitches Sold in convenient pre-packaged quantities