A flange nut is a nut that has a wide flange end that acts as an integrated, non-spinning washer.The flange nut is used to distribute the pressure of the nut on the part, reducing the possibility of damage to the part and making it less susceptible to loosening. Features - ColorAssorted Color - Size: 9 x 6 x 1 cm. - Material: Stainless steel. - Flanged base eliminates the need for a washer when fastening components. - A flange nut is a nut that has a wide flange end that acts as an integrated, non-spinning washer. - The flange nut is used to distribute the pressure of the nut on the part, reducing the possibility of damage to the part and making it less susceptible to loosening. - Because they are serrated, they cannot be used on washers or surfaces that cannot be scratched. Serrations help to avoid nut vibrations and increase nut retention. - Variety of application: Can be widely used in automobile, construction machinery, shipbuilding and etc. Allocating more quantity for the commonly used lock nuts. Package list: 25 x nuts 1 x wrench