Nylock Nut, also known as a nylon lock nut or a nylon insert lock nut, is a type of fastener that is designed to provide a secure and reliable connection between two or more objects. It consists of a nut with a nylon insert that is located at the top of the nut and is designed to grip the threads of the bolt or screw that it is threaded onto. The nylon insert creates a tight and secure fit, preventing the nut from loosening due to vibration or other factors. Nylock nuts are commonly used in applications where a secure and reliable connection is required, such as in machinery, automotive, and aerospace applications. They are available in a range of sizes, materials, and finishes to suit different applications and are often used in combination with other fasteners, such as bolts and washers, to provide additional strength and stability.