A fastening kit for fastening a covering layer to a receiving structure, the fastening kit comprising a fastener, which comprises: - a sleeve, comprising: o an elongated body, which extends between a tip and an end flange, wherein the diameter of the end flange is larger than the diameter of the body, and o a channel, which extends through the body and comprises: • a first section, which has a non-circular cross-section, and • a second section, and - a screw, comprising: o a threaded shank, which can be arranged into the first and second section (13a, 13b) of the channel, and o a head, which is provided at an end of the shank and which can be slidably fitted to the first section of the channel, whereby: - a thread fit between the shank of the screw and the second section of the sleeve, and - a tool, which comprises: o a shaft, which comprises a non-circular cross-section corresponding with the cross-section form of the first section of the channel of the sleeve, whereby the shaft can be arranged into the first section of the channel slidably in axial direction and form-lockingly in rotational direction, and o a bit, which is provided to an end of the shaft to connect with the head of the screw for driving the screw into the receiving structure, whereby the relative axial position of the sleeve and the screw is adjustable by rotating the sleeve in relation to the screw by means of the shaft of the tool, when the bit of the tool is detached from the head of the screw. - a sleeve, comprising: o an elongated body, which extends between a tip and an end flange, wherein the diameter of the end flange is larger than the diameter of the body, and o a channel, which extends through the body and comprises: • a first section, which has a non-circular cross-section, and • a second section, and o an elongated body, which extends between a tip and an end flange, wherein the diameter of the end flange is larger than the diameter of the body, and o a channel, which extends through the body and comprises: • a first section, which has a non-circular cross-section, and • a second section, and • a first section, which has a non-circular cross-section, and • a second section, and - a screw, comprising: o a threaded shank, which can be arranged into the first and second section (13a, 13b) of the channel, and o a head, which is provided at an end of the shank and which can be slidably fitted to the first section of the channel, o a threaded shank, which can be arranged into the first and second section (13a, 13b) of the channel, and o a head, which is provided at an end of the shank and which can be slidably fitted to the first section of the channel, - a thread fit between the shank of the screw and the second section of the sleeve, and - a tool, which comprises: o a shaft, which comprises a non-circular cross-section corresponding with the cross-section form of the first section of the channel of the sleeve, whereby the shaft can be arranged into the first section of the channel slidably in axial direction and form-lockingly in rotational direction, and o a bit, which is provided to an end of the shaft to connect with the head of the screw for driving the screw into the receiving structure, o a shaft, which comprises a non-circular cross-section corresponding with the cross-section form of the first section of the channel of the sleeve, whereby the shaft can be arranged into the first section of the channel slidably in axial direction and form-lockingly in rotational direction, and o a bit, which is provided to an end of the shaft to connect with the head of the screw for driving the screw into the receiving structure,