Dome Nyloc Nuts. A Prevailing Torque type Nut, Manufactured from A2 304 Stainless Steel to DIN 986.\r\nPlease note that these are sold in multiples of 10.\r\nDome Nuts are commonly used where a nice tidy, good looking finish is required. The domed end also covers any excess thread that would normally protrude past the end of the nut. This in turn protects not only the thread but also anything that may come into contact with the thread. The addition of the nylon insert helps to keep the nut secured in position\r\nManufactured from A2 Stainless Steel these offer good corrosion resistance and are almost non magnetic.