Trapezoidal drilled flange nuts made of bronze CC493K (CuSn7ZnPb) according to ISO 2901/2903 and DIN 103 tolerance 7H. For use under load and for drives with medium and low speeds, manually or motor driven. The use of bronze trapezoidal nuts mounted on steel or stainless-steel screws is successful, especially if lubrication is ensured. Trapezoidal nuts