Evenly Distributes Pressure: The flat washers evenly distribute the pressure of not only the nut but also the head of the fastener.
When used:The washers prevent damage to the material as well as reduce the chance of the nut loosening from an uneven surface
Designed to distribute fastener load evenly, these washers provide a smooth bearing surface. They effectively prevent pull-through and protect mating surfaces from damage during tightening.