Custom Heavy Duty machin pou lave

The customized washers are usually made from low carbon steel or mild steel, and they are designed to have a larger surface area than round washers. Since they can generate more friction when tightened against wood, this kind of washers are specified for seismic applications. They are often applied in timber construction, and hot-dip galvanized surface finish is highly recommended. In specific, the square flat washers is to increase the size of the bearing surface area, and reduce the surface pressure applied on the fastened object.   While, the square hole washer is designed to prevent the washer from turning relative to a square shaped shaft or rod. They are used in an abundance of different applications, but one popular use is with woodwork and timber construction. They are particularly made to go beneath the carriage bolt head in softer woods. This way, when you tighten the nut, the bolt head doesn't spin and comes out of the hole.