The invention relates to a holder module for affixing lines of various thicknesses in an aircraft, as well as to a holder system comprising two of the above-mentioned holder modules. Furthermore, the invention relates to a method that makes it possible to lead lines reliably and in an ordered manner through an aperture in a structural component of an aircraft. Finally, the invention relates to an aircraft that is equipped with a plurality of the above-mentioned holder modules, as well as to the use of a plurality of the holder modules according to the invention in an aircraft. The holder module comprises a basic body as well as at least one cross arm. The basic body comprises at least one bearing face to accommodate or support a line. Corresponding to the basic body, the cross arm, too, comprises at least one counter-bearing face that interacts with the bearing face of the basic body. To make it possible for the holder module to reliably accommodate at least one line, the at least one cross arm is movably positioned in relation to the basic body such that the line, due to movement of the at least one cross arm is affixed between the at least one bearing face of the basic body and the at least one counter-bearing face of the at least one cross arm.