Using Pinch Screw Washer for Formwork

The washer for the coupling screw is used in wall formwork fastening systems. The whole system consists of formwork panels, coupling screws and washers. The most important element in this system is the coupling screw. Safety during concreting and proper operation of the wall formwork depend on its quality and strength characteristics. The coupling screw takes on the main static and dynamic loads when laying the concrete mixture into the formwork.

The coupling screws are fastened with nuts on the outside of the formwork panels, preventing them from moving apart when pouring the concrete mixture. The nuts act as a support for the shields. It is at the point of contact between the nut and the shield that the maximum voltage is created.

It is in this place, between the formwork shield and the nut, that washers for coupling screws are used. It is she who transmits the stress that arises as a result of the pressure of concrete from the plates to the formwork screeds. It is designed to protect the coupling screw from rupture and increase the area of support on the edge of the formwork shield.

In addition, it can be noted that the use of a washer for a coupling screw prevents the formwork ribs from being worn by nuts, protecting them during screed.

Washers are made of sheet steel with a thickness of 3 to 5 mm with or without galvanized coating, with holes with a diameter of 17 and 24 mm for the coupling screw. You can choose the appropriate type of washer in our catalog.

This element of the fastening system has a low cost and is intended for repeated use. At the same time, it performs several important functions that will strengthen the fastening and prolong the life of the formwork panels.