The function of the spring washer is realized by its elasticity and diagonal friction. Widely used to prevent loosening of fasteners in frequently removed joints.
The device under the nut is used to prevent the nut from loosening and is described in the national standard.
The hexagon slotted nut is specially used with the bolt with a hole at the end of the screw to insert the cotter pin into the hole of the screw from the slot of the nut to prevent the nut from loosening automatically. It is mainly used for occasions with vibration load or alternating load.
After the nut is tightened, the elastic reaction generated by the washer flattening compacts the threaded threads axially. At the same time, the tip of the bevel of the washer also has a relaxing effect on the supporting surface of the nut and the connected part.
Another function of the gasket is to protect the surface of the workpiece.
Because the nut is easier than the bolt to deform under the action of the spring gasket, so that the threaded connection is tighter! That's one of the reasons it's on the side of the nut.
When the screw is rotating, the friction is greater than the nut, because there is friction between the screw and the hole, the resistance is larger than the nut, and the nut is not, so the nut loose may be larger than the screw. That's one of the reasons it's on the side of the nut.
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