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DIN EN 1661 (DIN 6923)The advantages of the flange on nuts are:
DIN EN 1661 (DIN 6923)The advantages of the self-locking flange on nuts (in addition to those advantages already mentioned for flanged nuts) are:
DIN EN 1661 (DIN 6923)The “security device” of the knurled nut is made up of teeth whose rake angle shape has been suitably designed to counteract any unscrewing effect caused, generally, by vibration.The knurled nut is the only one that requires an unscrewing force that is significantly greater than the initial screwing force.