Specifies the dimensions, mechanical properties, mounting and fastening characteristics of screws used for mounting ski bindings on cross-country skis. The purpose is to facilitate the design of a more rational and safer binding mounting system. The proposed values for driving torque and stripping torque will enable adjustabletorque-limiting screwdrivers to be used with the same adjustment for all skis. Universal use of Pozidriv cross recess No. 3 screw will contribute also significantly to a simplification of the binding mounting procedure.