Why should the washer be fitted when the screws are installed?
Washers are divided into flat washers and spring washers. After the screws are tightened, because of the small contact area with the base, the installation of flat washers can increase the pressure area of the base and tighten the base, which will not cause the damage or sliding of the base. The spring washer increases the stress of the buckle and makes the fastening of the screw more fastening
Used to protect the surface of the connecting piece from the scratch of the nut and to distribute the pressure of the nut on the connecting piece
Reduce pressure, increase friction, seal, shock absorption and fixation
