Pressure Washer

A pressure washer increases the clamping force of a screw or nut against the surface being fastened. The product can have various shapes and sizes and be made of steel, copper, brass, plastic or nylon, but one feature remains unchanged — a hole for the main fastener.

In terms of configuration, a pressure washer can be round, square or cylindrical. Some models have a split spring section for better clamping. Reliable, high-quality fastening is impossible without a washer. Advantages of a pressure washer:

• even load distribution when tightening a bolt;
• increased clamping force and contact area;
• protection of the surface of the materials being joined;
• prevention of self-loosening of screws or studs, including under vibration.

A separate type of pressure washer is used to fasten thermal insulation boards when cladding building façades. This plastic product resembles a mushroom in appearance and comes with a long self-tapping screw. Builders call this product a disc-shaped wall plug.