Hex Nuts manufacturers Product Description Stainless Steel Serrated Hex Flange nuts have non-rotating washers at the bottom. There are serrations under the washer. When vibration occurs, it allows the nuts to be firmly tightened and prevents them from being used with the washer or on surfaces that may be scratched. Product Details Drive styleExternal hex Nut typeLocknut,hex flange Lock typeSerrations Thread TypeMetric Thread DirectionRight Hand Thread spacingCoarse Thread FitClass 6H Grade/ClassGrade A2-70 Material304 Stainless steel FinishPassivated StandardDIN6923 Product equipment Feature They have serrations and can clamp the surface of the material instead of the thread for easy installation and gentle vibration resistance. The flange distributes the pressure where the nut contacts the surface of the material, without the need for a separate gasket. Height includes flange. Metric 304 stainless steel is also called A2 stainless steel. Nuts may be slightly magnetic. Test equipment Advantage A flange nut is a nut with a wide flange at one end and is used as an integrated non-rotating washer. This is used to distribute the pressure of the nut on the fixed parts, reduce the chance of damage to the parts, and make it less likely to loosen due to uneven fastening surfaces. The flange may be serrated to provide a locking effect. The serrations are inclined so that they prevent the nut from rotating in the direction of loosening the nut. Because of their serrations, they cannot be used with washers, nor can they be used on surfaces that cannot be scratched. The serration helps to avoid vibration of the nut and increase the clamping force of the nut. Certificate Our factory Warehouse-MapHex Nuts manufacturers website:http://www.jgscrewnut.com/nuts/hex-nuts/