An arrangement for fastening a screening module to a screen support panel of a screening equipment, wherein the arrangement comprises an elongate first element comprising an axially downward extending through opening; an elongate second element comprising a head portion and a lower portion extending axially downwards from the centre of the head portion, the lower portion having threads arranged on the outer surface in a helical angle (β); wherein the first element is attachable to the screen support panel and adapted to be received in an opening of the screening module or in an opening created by screening modules when they are positioned adjacent to each other on the screen support panel and wherein the second element mechanically engages with the first element, such that the screening module is attached to the screen support panel upon interconnection between the first element and the second element, wherein an outer peripheral surface of the head portion of the second element comprises a plurality of radially distributed engagement elements (9, 18a, 18b), wherein the engagement elements on the head portion of the second element are in the form of grooves, characterized in that: - the grooves having an angular orientation opposite to that of the helical angle (β) of the threads of the lower portion of the second element or - the grooves extending substantially axially along the entire length of the head portion of the second element or - the grooves being of triangular shape comprising an inclined contact face and a vertical contact face wherein the inclined contact face make an angle (α) with a vertical axis of the second element, and the vertical contact face is parallel to the vertical axis of the second element or - the grooves being in the form of radially distributed equidistant parallel ridges which make an angle (γ) with the vertical axis of the second element or wherein the engagement elements on the head portion of the second element are in the form of a plurality of radially distributed protrusions (18a, 18b) in the form of circular buttons or three-dimensional triangles. an elongate second element comprising a head portion and a lower portion extending axially downwards from the centre of the head portion, the lower portion having threads arranged on the outer surface in a helical angle (β); wherein the first element is attachable to the screen support panel and adapted to be received in an opening of the screening module or in an opening created by screening modules when they are positioned adjacent to each other on the screen support panel and wherein the second element mechanically engages with the first element, such that the screening module is attached to the screen support panel upon interconnection between the first element and the second element, wherein an outer peripheral surface of the head portion of the second element comprises a plurality of radially distributed engagement elements (9, 18a, 18b), wherein the engagement elements on the head portion of the second element are in the form of grooves, characterized in that: - the grooves having an angular orientation opposite to that of the helical angle (β) of the threads of the lower portion of the second element or - the grooves extending substantially axially along the entire length of the head portion of the second element or - the grooves being of triangular shape comprising an inclined contact face and a vertical contact face wherein the inclined contact face make an angle (α) with a vertical axis of the second element, and the vertical contact face is parallel to the vertical axis of the second element or - the grooves being in the form of radially distributed equidistant parallel ridges which make an angle (γ) with the vertical axis of the second element or wherein - the grooves having an angular orientation opposite to that of the helical angle (β) of the threads of the lower portion of the second element or - the grooves extending substantially axially along the entire length of the head portion of the second element or - the grooves being of triangular shape comprising an inclined contact face and a vertical contact face wherein the inclined contact face make an angle (α) with a vertical axis of the second element, and the vertical contact face is parallel to the vertical axis of the second element or - the grooves being in the form of radially distributed equidistant parallel ridges which make an angle (γ) with the vertical axis of the second element or wherein the engagement elements on the head portion of the second element are in the form of a plurality of radially distributed protrusions (18a, 18b) in the form of circular buttons or three-dimensional triangles.