ARP's all-metal, self-locking nuts are ideal for use practically everywhere. They are available in 6-point Jet-nuts. These nuts are offset, lightweight, temperature-resistant, positive-locking, and reusable. These plate nuts are ideal for use in difficult to reach areas, particularly when in a hurry. Once they're installed, their elastic deformation creates a friction hold that will not vibrate loose. ARP's Plate Nuts are a quick and efficient way to provide a captive self-locking nut wherever you might need one. Made of carbon alloy steel and finished in cadmium and chromate.