Hexagon flange bolt with washer assembly

The bolt strength is high and the compressive stress of the connected parts is relatively low, adding flat washers can reduce the compressive stress on the bearing surface of the connected parts. In order to ensure that the bolt holes between the two connections can correspond one to the other, we need to increase the diameter of the holes to compensate for the deviation in the position of the holes, the bolt holes exceed the standard requirements when you need to increase the flat washers.