A nylon insert lock nut, also referred to as a nyloc nut, polymer-insert lock nut, or nylon insert (elastic) stop nut, is a common type of lock nut comprised of a hex nut with a fixed nylon-filled collar at its back end. When a screw reaches the collar, the threads and nylon form a tight, frictional fit, thus restricting movement of the screw when it is subject to vibration. Nyloc nuts are designed to be used with machine screws and bolts and can be reused.

Castle nuts are just one type of hardware commonly used in mechanics. Also known as castellated nuts, a castle nut is characterized by the notches present on one end, which resemble the serrated tops of castle parapets. The accompanying bolt has typically one to two holes, which allows the nut to lock securely in place.

What are heavy hex nutsHeavy hex nuts are somewhat larger than a standard hex nut, compatible with high strength and large diameter bolts. Their additional strength comes from increased thread engagement, which is due to their thickness, and greater resistance to dilation (expansion or stretching) b

A coupling nut, also known as extension nut, is a threaded fastener for joining two male threads, most commonly a threaded rod, but also pipes. The outside of the fastener is usually a hex so a wrench can hold it. Variations include reducing coupling nuts, for joining two different size threads; sig

Chipboard screw is a kind of product which is suitable for the installation of electric tools. It is mainly used for the connection and fastening between wood plate, wood plate and thin plate. To a large extent, it can replace the use of common wood screws (wood screws are not heat-treated).At the same time, the wooden screw is now first put forward by the beacon process, not only saves the material, but also the thread is sharper.

What are rivet nuts? A rivet nut, also known as a blind rivet nut or threaded insert, is a one-piece internally threaded and counterbored tubular rivet that can be anchored entirely from one side. There are two types: one is designed to form a bulge on the back side of the panel as a screw is tightened in its threads. The other is similarly drawn in using a screw, but is drawn into the sleeve instead of creating a bulge.