A screen (3), which has a screen panel support (2) and screening modules (1) arranged in the screen panel support (2). The screening modules (1) are fastened to the screen panel support (1) by means of at least one device. The device comprises a first element (4) attachable to the screen panel support (2) and adapted to receive a opening (8) of the screening module (1) or a opening (8) created by adjacent screening modules (1), the first element (4) having an outer threading, and a second element (5) having an inner threading for engagement with the outer threading of the first element (4), such that the screening module (5) is attached to the screen panel support (2) upon interconnection between the first element (4) and the second element (5). The screen (3) wherein an outer periphery of the second element (5) comprises at least one groove (8) for engagement with a handling tool (10). A method for fastening a screening module (1) to a screen panel support (2).