Abstract: A gradient insulation screw (1) for adjustable fastening of a roofing membrane (2) on a substrate, in particular a steel sheet (3), the gradient insulation screw (1) comprising a drilling tip (4) with a first direction of rotation; following the drilling tip (4), an assembly thread (7) with a second direction of rotation, which differs from the first direction of rotation; following the assembly thread (7), a first thread-free region (8); following the first thread-free region (8), an adjustment thread (9) with the first direction of rotation, the outer diameter of which is greater than the outer diameter of the assembly thread (7) and the drilling tip (4); and following the adjustment thread (9), a tool holder (10) as well as a system (11) for adjustable fastening of a roofing membrane (2) on a substrate with a gradient insulation screw (1) and a holding element (12) and a method for adjustable fastening of a roofing membrane (2) on a substrate using such a system (11).

Abstract: A fixing disc (1) for initially fixing a fastening element (2) in an opening of a component to be fastened, in particular a facade panel, during mounting of the fastening element (2) and for cutting into and/or removing a defined region of a protective film on the component to be fastened during mounting of the fastening element (2) is described. The fixing disc (1) has a fixing means for initially holding the fastening element (2) in a predetermined position relative to the opening during mounting of the fastening element (2), at least one connecting means (4) for at least temporarily producing a connection between the fixing disc (1) and the fastening element (2), and at least one cutting and/or friction means (5) on that side of the fixing disc (1) which faces the component to be fastened.

Abstract: The invention relates to a fixed or sliding screw with a screw head and a screw shaft which has a threaded section. The screw head has a torque transmitting section for rotating the fixed or sliding screw about a screw axis which is concentric to the screw head and the screw shaft. The screw head has a collar section at the screw head end facing the threaded section. A buffer element made of an elastic plastic is arranged on the collar section side facing away from the torque transmitting section, and a sliding disk is arranged on the buffer element side facing away from the collar section.

Abstract: A fixing disc (1) for initially fixing a fastening element (2) in an opening of a component to be fastened, in particular a facade panel, during mounting of the fastening element (2) and for cutting into and/or removing a defined region of a protective film on the component to be fastened during mounting of the fastening element (2) is described. The fixing disc (1) has a fixing means for initially holding the fastening element (2) in a predetermined position relative to the opening during mounting of the fastening element (2), at least one connecting means (4) for at least temporarily producing a connection between the fixing disc (1) and the fastening element (2), and at least one cutting and/or friction means (5) on that side of the fixing disc (1) which faces the component to be fastened.

Abstract: The invention relates to a fixed or sliding screw with a screw head and a screw shaft which has a threaded section. The screw head has a torque transmitting section for rotating the fixed or sliding screw about a screw axis which is concentric to the screw head and the screw shaft. The screw head has a collar section at the screw head end facing the threaded section. A buffer element made of an elastic plastic is arranged on the collar section side facing away from the torque transmitting section and a sliding disk is arranged on the buffer element side facing away from the collar section.