Kit including one screw with one screw head bushing

Abstract

SCREW DRIVE ELEMENT. The present invention relates to a screw head bushing (2) for a screw (1), wherein the screw head bushing (2) has an outer section (3) and an inner section (4) that follows the outer section (3), wherein the outer section (3) has a larger diameter (D) than the inner section (4) and the outer section (3) is configured substantially as a truncated cone that tapers towards the inner section (4) and the inner section (4) is configured as a fitting geometry for receiving without rotation a screw head drive element (6).

Description

1 / 18 “KIT COMPRISING ONE SCREW WITH ONE SCREW HEAD BUSHING”

[001] The invention relates to a screw head bushing for a screw according to the preamble of claim 1, a screw head drive according to the preamble of claim 6, a forming tool for forming a screw head bushing according to the preamble of claim 11, a screw according to the preamble of claim 16 and a kit comprising a screw and a screw head drive.

[002] Screw head bushings are geometric structures that are molded into screw heads and serve to receive a screw head actuator without rotation. Through the screw head actuator, torque can be transmitted to the screw, to screw a screw into a material or to unscrew it. In the state of the art, several geometries are known for screw head actuators and screw head bushings, such as Phillips, slotted, or Torx geometries. These geometries are designated as screw actuators. Geometries, such as the Torx geometry, are optimized to transmit torques from the screw head actuator to the screw head bushing.

[003] A disadvantage of many screw drive elements is that, in the case of insufficiently centered alignment of the screw head drive element, for example, if it is stuck, in relation to the screw head bushing, a form-based closure between the screw head drive element and the screw head bushing is only established insufficiently, so that the screw head drive element may slip in the screw head bushing. Thus the screw head bushing Petition 870260034168, dated April 13, 2026, page 8 / 60 2 / 18 of the screw and / or the screw head actuator can be activated, so the torque required to screw or unscrew a screw equipped with the screw head actuator can no longer be transmitted. This has the consequence that the screw in question can no longer be screwed in or removed from a material by simple means, so a workpiece into which the screw was screwed could be damaged or impaired in its function.

[004] A geometry for improved alignment of a screw head actuator in a screw head bushing is known in the prior art as the TTAP screw actuator, and published under number US 6,951,158 B1. The screw head bushing of the TTAP screw head actuator comprises an outer section and an inner section, the inner section comprising a centering cone. Thus the screw head actuator is centrally aligned in the screw head bushing.

[005] The present invention aims to provide an alternative geometry for a screw head actuator element, which ensures high torque transmission and additionally provides centering of the screw head actuator element in the screw head bushing.

[006] According to the invention, this objective is achieved by means of a screw head bushing with the characteristics of claim 1, a screw head actuator element with the characteristics of claim 6, a forming tool for forming a screw head bushing with the characteristics of claim 11, a screw with the characteristics of claim 16 and a Kit comprising a screw and a screw head actuator element with the characteristics of claim 17. Petition 870260034168, dated April 13, 2026, page 9 / 60 3 / 18

[007] The embodiment of the screw head bushing for a screw comprises an outer section and an inner section that follows the outer section. The outer section has, in at least one first axis oriented normal to the depth of the screw head bushing, a larger diameter than the inner section and is configured substantially as a truncated cone tapering towards the inner section. The inner section is configured as an engagement geometry for receiving a screw head actuator without rotation. A guide for the screw head actuator is provided through the tapering outer section, thus preventing the screw head actuator from being inserted into the screw head bushing at an angle.Furthermore, the inner section designed as the engagement geometry is positioned behind the outer section, or at a greater depth than the outer section, thus ensuring that the screw-head actuator is centered through the outer section before engaging the engagement geometry. This prevents wear on the engagement geometry due to incorrectly inserted screw-head actuators.

[008] Preferably, the outer section comprises a truncated conical surface inclined in the range of 2.5° to 10° relative to a cylindrical surface. This achieves the advantage that a screw-head actuating element placed at an angle is aligned centrally without requiring a large amount of force.

[009] Furthermore, the screw head bushing according to the invention, according to the preferred embodiment, comprises an insertion region with insertion surfaces, disposed between the outer section and the inner section, wherein the insertion surfaces have an inclination of substantially 10° in Petition 870260034168, dated April 13, 2026, page 10 / 60 4 / 18 in relation to a base surface of the trunk cone of the outer section. This facilitates an inward sliding, from an attack geometry of the screw head actuator element to the engagement geometry of the screw head bushing.

[0010] The engagement geometry of the screw head bushing according to the invention is preferably a Philips geometry, a Torx geometry, or a slotted geometry. Especially preferably, the engagement geometry is a slotted geometry that runs along the screw head actuator element on a second axis different from the first axis, oriented normal to the depth of the screw head bushing. This achieves the advantage that a plurality of different screw head actuator element geometries can be employed within the scope of the invention.

[0011] The embodiment of the screw head actuating element comprises an outer section and an inner section following the outer section, wherein the inner section, in at least one first spindle oriented perpendicular to a height of the screw head actuating element, has a larger diameter than the outer section. The inner section is configured substantially as a truncated cone that tapers towards the outer section, and the outer section comprises an engagement geometry, which is configured to engage with an engagement geometry of a screw head bushing. A guide is provided through the inner section of the screw head actuating element tapering in the form of a truncated cone, thereby preventing the attack geometry of the screw head actuating element from being introduced at an angle into an engagement geometry of a screw head bushing.

[0012] Preferably, the inner section of the screw head actuator element comprises a truncated conical surface inclined at Petition 870260034168, dated 04 / 13 / 2026, page 11 / 60 5 / 18 range of 2.5° to 10° relative to a cylindrical surface. The advantage is achieved that a screw-head actuator placed at an angle is aligned centrally without significant expense.

[0013] Furthermore, the screw head bushing according to the invention, in the preferred embodiment, comprises an insertion region with insertion surfaces, disposed between the outer and inner sections, wherein the insertion surfaces have a substantial inclination of 10° relative to a base surface of the trunk cone of the outer section. This facilitates inward sliding of the drive geometry of the screw head actuator into the engagement geometry of the screw head bushing.

[0014] The engagement geometry of the screw head bushing according to the invention is preferably a Philips geometry, a Torx geometry, or a slotted geometry. Particularly preferably, the engagement geometry is a slotted geometry that runs along the screw head actuating element on a second axis different from the first axis, oriented normal to the depth of the screw head bushing. This achieves the advantage that a plurality of different screw head actuating element geometries can be employed within the scope of the invention.

[0015] The forming tool according to the invention for forming a screw head bushing into a screw head comprises an outer section and an inner section following the outer section, wherein the inner section, in at least one first axis oriented normal to a height of the forming tool, has a larger diameter than the outer section. The inner section is configured substantially as a truncated cone tapering towards the outer section, and the outer section comprises Petition 870260034168, dated April 13, 2026, page 12 / 60 6 / 18 a geometry that is configured to conform, in the screw head, an engagement geometry for torsion-free reception of a screw head actuator element. This achieves the advantage that a screw head bushing according to the invention is molded in a blank screw piece.

[0016] The inner section of the forming tool according to the invention preferably comprises a truncated cone surface inclined in the range of 2.5° to 10° relative to a cylindrical surface. According to a preferred embodiment of the forming tool according to the invention, it further comprises an insertion region with insertion surfaces disposed between the outer section and the inner section, wherein the insertion surfaces have an inclination of substantially 10° relative to a base surface of the truncated cone of the inner section. This achieves simple insertion and centering of a screw head actuator element. In a screw head bushing.

[0017] Preferably, the drive geometry of the forming tool according to the invention is a Philips geometry, a Torx geometry, or a slotted geometry. Especially preferably, the drive geometry is a slotted geometry that extends through the forming tool on a second axis different from the first axis, oriented perpendicular to the height of the forming tool. This achieves the advantage that a plurality of different screw head drive element geometries can be employed within the scope of the invention.

[0018] The screw according to the invention comprises a screw head bushing according to the invention that has preferably been shaped with a forming tool according to the invention. Petition 870260034168, dated 04 / 13 / 2026, page 13 / 60 7 / 18

[0019] The kit according to the invention comprises a screw according to the invention and a screw head actuator. According to the invention, the inner section of the screw head actuator of the kit according to the invention has a truncated conical surface with an angle of inclination relative to a cylindrical surface greater than a truncated conical surface of the outer section of the screw head bushing of the screw of the kit according to the invention. This achieves a closure due to friction between the screw head bushing of the screw and the screw head actuator, thereby providing a retention force. Through the retention force, the screw remains or is fixed on the screw head actuator and can be easily placed in the workpiece. When removing the screw head actuator from the screw head sleeve, this retention force is easily overcome.By configuring the Kit according to its invention, the advantage is achieved that a retention force acting on the screw is provided without additional magnetic elements known in the prior art.

[0020] Figure 1a shows a cross-section through a screw head of a screw according to the invention.

[0021] Figure 1b shows the screw head bushing according to Figure 1a in another cross-sectional view.

[0022] Figure 1c shows the screw head bushing according to Figure 1a and Figure 1b in a top view.

[0023] Figures 2a, 2b and 2c show another embodiment of the screw head bushing according to the invention with a Philips-shaped engagement geometry. Figures 3a, 3b and 3c show another embodiment of the screw head bushing according to the invention with a slotted engagement geometry. Petition 870260034168, dated 04 / 13 / 2026, page 14 / 60 8 / 18

[0024] Figure 4a shows a screw head actuator element. According to the invention in a side view.

[0025] Figure 4b shows the screw head actuator element according to Figure 4a in a perspective view.

[0026] Figure 4c shows the screw head actuator element. According to figures 4a and 4b in a top view.

[0027] Figures 5a, 5b and 5c show another embodiment of the screw head actuator element according to the invention with a Phillips-shaped drive geometry.

[0028] Figures 6a, 6b and 6c show another embodiment of the screw head actuator element according to the invention with a slotted-shaped drive geometry.

[0029] Figures 7a and 7b show a forming tool according to the invention with a Torx-shaped attack geometry.

[0030] Figures 8a and 8b show the forming tool according to the invention with a Phillips-shaped attack geometry.

[0031] Figures 9a and 9b show the forming tool according to the invention with a slotted-shaped attack geometry.

[0032] Figures 10a and 10b show a first embodiment of the screw according to the invention.

[0033] Figures 11a and 11b show a second embodiment of screw 1 according to the invention.

[0034] Figures 12a and 12b show a third embodiment of screw 1 according to the invention. Petition 870260034168, dated 04 / 13 / 2026, page 15 / 60 9 / 18

[0035] Figure 1a shows a screw head of a screw according to the invention in cross-section, to represent a screw head bushing 2 according to the invention provided in a screw 1 according to the invention. The screw head bushing 2 according to the injection has an outer section 3 and an inner section 4, which follows the outer section 3. The outer section 3 begins at a cover surface 5 of the screw head, and, for screwing the screw 1, a screw head actuating element 6 according to the invention, which is shown in Figures 4a to 4c, is introduced into the inner section 4 through the outer section 3. The outer section 3 has, in at least one first axis A1, visible in Figure 1c, oriented normal to a depth T of the screw head bushing 2, a diameter D smaller than the inner section 4.Thus, the introduction of the screw-head actuating element 6 into the screw-head bushing 2 is facilitated. The outer section 3 is substantially shaped like a truncated cone that tapers towards the inner section 4. This provides a guide for the screw-head actuating element 6. The inner section 4 is configured as an engagement geometry for torsion-free reception of the screw-head actuating element. Within the scope of the invention, any known geometry from the prior art for screw-head actuating elements may be used as the engagement geometry. A Phillips geometry, a Torx geometry, or a slotted geometry is especially preferred as the engagement geometry. Figures 1 to 1c show a Torx geometry.The configuration according to the invention of the outer section 3 and the inner section 4 represents an improved guide of the screw head actuator element 6 when inserted into the screw head bushing 2 and a centering of the screw head actuator element 6 in the screw head bushing 2. Petition 870260034168, dated 04 / 13 / 2026, page 16 / 60 10 / 18 before it fully engages with the engagement geometry. This prevents wear of the engagement geometry due to the incorrectly inserted screw head actuator 6. Figure 1b shows the screw head of screw 1 with the screw head bushing 2 according to Figure 1a in another cross-sectional representation, which is rotated around a longitudinal axis L of the screw head actuator 2 (sic) relative to Figure 1a. The engagement geometry represented in Figures 1a to 1c is a Torx geometry, and in Figure 1a a maximum diameter of the Torx geometry can be seen. Figure 1c shows the screw head according to Figures 1a and 1b above, and the engagement geometry can be observed in a top view.

[0036] The outer section 3 of the screw head bushing according to the invention preferably has a truncated conical surface inclined in the range of 2.5° to 10° relative to a cylindrical surface. The inclination of the truncated conical surface is designated, in figures 1a and 1b, with an angle α. This angular range has proven particularly advantageous with regard to the possibility of easy insertion of the screw head actuating element 6.

[0037] Preferably, the screw head bushing 2 further comprises an insertion region 7 with insertion surfaces 8, disposed between the outer section 3 and the inner section 4. These are visible in figures 1a, 1b and 1c. The insertion surfaces 8 have, according to a preferred embodiment of the screw head bushing 2 according to the invention, an inclination β, shown in figure 1a, of substantially 10° relative to the base surface of the truncated cone of the outer section 3. Thus, a sliding of an attack geometry of the screw head actuating element into the engagement geometry of the screw head bushing 2 is facilitated. Petition 870260034168, dated 04 / 13 / 2026, page 17 / 60 11 / 18

[0038] Figures 2a, 2b and 2c show an alternative embodiment of the screw head bushing 2 according to the invention with a Philips-shaped engagement geometry, and Figures 3a, 3b and 3c show another embodiment of the screw head bushing 2 according to the invention with a slotted engagement geometry.

[0039] As can be seen in figure 3c, the engagement geometry can be a slotted geometry that runs along the screw head bushing 2 on a second axis A2 different from the first axis A1, oriented normal to the depth T of the screw head bushing 2. This achieves the advantage that screwdrivers known from the prior art can be used to drive a screw 1 configured with the screw head bushing 2 according to the invention.

[0040] The screw head actuator element 6 according to the invention is shown in Figures 4a and 4c. The screw head actuator element 6 according to the invention has an outer section 9 and an inner section 10 that follows the outer section 9, wherein the inner section 10, in at least one first axis A1 oriented normal to a height H of the screw head actuator element 6, has a diameter D greater than the outer section 9. The inner section 10 is configured substantially as a truncated cone that tapers towards the outer section 9. The outer section 9 comprises an attack geometry that is configured to engage without torsion in the engagement geometry of the screw head bushing 2 according to the invention. As an attack geometry, within the scope of the invention, any geometry for a screw actuator element known in the prior art may be provided. It is visible in detail in Figures 4b and 4c.Figures 4a to 4c represent a Torx geometry. Specifically, as... Petition 870260034168, dated 04 / 13 / 2026, p. 18 / 60 12 / 18 drive geometry, a Philips geometry, a Torx geometry or a slotted geometry is preferred. The screw head drive element 6 and the screw head bushing 2 represent substantially complementary geometric shapes. Through the inner section 10 that tapers into a cone shape of the screw head drive element 6, a guide is provided in association with the conical configuration of the outer section 3 of the screw head bushing 2, thus preventing the drive geometry of the screw head drive element 6 from being introduced into an inclined engagement geometry of the screw head bushing 2. This prevents incorrect insertion of the screw head drive element 6 into the screw head bushing 2 and avoids screwing of the screw head drive element 6 into the screw head bushing 2.

[0041] The internal section 10 of the screw head actuating element 6 according to the invention comprises a truncated conical surface inclined in the range of 2.5° to 10° relative to a cylindrical surface. This inclination is designated in Figure 4a with the angle of inclination γ. This angular range proved particularly advantageous with regard to the possibility of easy insertion of the screw head actuating element 6.

[0042] Preferably, the screw head actuating element 6 comprises an insertion region 11 disposed between the outer section 9 and the inner section 10 with insertion surfaces 12. These insertion surfaces 12 are visible in figures 4b and 4c. The insertion surfaces 12 preferably have an inclination δ visible in figure 4b of substantially 10° relative to a base surface of the truncated cone of the inner section 10. Thus a sliding of the attack geometry of the screw head actuating element 6 into the engagement geometry of the bushing of Petition 870260034168, dated April 13, 2026, page 19 / 60 13 / 18 screw head 2 is facilitated.

[0043] Figures 5a, 5b and 5c show an alternative embodiment of the screw head actuator element 6 according to the invention with a Philips-shaped drive geometry, and Figures 6a, 6b and 6c show another embodiment of the screw head actuator element 6 according to the invention with a slotted-shaped drive geometry.

[0044] As can be seen in figure 6c, the attack geometry can be a slot geometry that passes through the screw head actuator element 6 on a second axis A2 different from the first axis A1, oriented normal to the height H of the screw head actuator element 6.

[0045] A forming tool 13 according to the invention for forming a screw head bushing 2 into a screw head is used in the production of screws, to form the screw head bushing 2 according to the invention into a screw head of a screw blank. This forming tool 13 has substantially the same geometry as the screw head actuator element 6 according to the invention. The forming tool 13 and the screw head bushing 2 therefore represent substantially complementary geometric shapes. Figures 4a, 4b and 4c, 5a, 5b and 5c, 6a, 6b, and 6c therefore also show, by way of example, an upper section of the forming tool 13 according to the invention.

[0046] The forming tool 13 for forming the screw head bushing 2 into a screw head comprises, as the screw head actuating element 6, an outer section 9 and an inner section 10 that follows the outer section 9, the inner section 10 having at least one first axis. Petition 870260034168, dated 04 / 13 / 2026, page 20 / 60 14 / 18 Aloriented normally at a height H of the forming tool 13, it has a diameter D larger than the outer section 9. The inner section 10 is configured substantially as a truncated cone that tapers towards the outer section 9, and the outer section 9 comprises an attack geometry that is configured to form, in the screw head, an engagement geometry for receiving the screw head actuator element 6 without torsion.

[0047] The inner section 10 of the forming tool 13 preferably comprises a truncated conical surface inclined in the range of 2.5° to 10° relative to a cylindrical surface. This inclination is designated in figure 4a with the inclination angle γ. This angular range proved particularly advantageous in relation to the possibility of easy insertion of the screw head actuating element 6.

[0048] According to the preferred embodiment of the forming tool 13 according to the invention, it comprises an introduction region 1 with introduction surfaces 12, disposed between the outer section 9 and the inner section 10. The introduction surfaces 12 preferably have an inclination γ visible in figure 4b of substantially 10° relative to a base surface of the truncated cone of the inner section 10. Thus, a sliding of the attack geometry of the screw head actuating element 6 into the engagement geometry of the screw head bushing 2 is facilitated.

[0049] Figures 5a, 5b and 5c show an alternative embodiment of the forming tool 13 according to the invention with a Philips-shaped attack geometry, and Figures 6a, 6b and 6c show another embodiment of the forming tool 13 according to the invention with a Petition 870260034168, dated April 13, 2026, page 21 / 60 15 / 18 attack geometry in the form of a slot geometry.

[0050] As can be seen in figure 6c, the attack geometry can be a slot geometry that passes through the forming tool 13 on a second axis A2 different from the first axis A1, oriented normal to the height H of the screw head actuator element 6.

[0051] Figures 7a to 9b show the forming tool 13 according to the invention in substantially complete representations, wherein the forming tool 13 comprises a section 14 for fixing the forming tool 13 in a screw production device. Figures 7a and 7b show the forming tool 13 according to the invention with a Torx-shaped lead geometry in two different sizes. Figures 8a and 8b show the forming tool 13 according to the invention with a Phillips-shaped lead geometry in two different sizes, and Figures 9a and 9b show the forming tool 13 according to the invention with a slotted lead geometry in two different sizes.

[0052] A kit according to the invention comprises screw 1 according to the invention and a screw head actuator 6 according to the invention. The inner section 10 of the screw head actuator 6 of the kit according to the invention has a truncated conical surface with an angle of inclination γ greater relative to a cylindrical surface than a truncated conical surface of the outer section 3 of the screw head bushing 2 of screw 1 according to the invention. Thus, when the screw head actuator 6 is inserted into the screw head bushing 2 of screw 1, a closure is achieved due to the shape between the truncated conical surfaces of the screw head bushing 2 and the actuator. Petition 870260034168, dated April 13, 2026, page 22 / 60 16 / 18 screw head 6, and screw 1 is fixed on the screw head actuator 6. This offers the advantage that screw 1 can be placed in a workpiece and screwed in easily without being held. Furthermore, this eliminates the need for magnetic elements in the screw head actuator 6. Experiments have shown that screw head actuators currently on the market are generally oversized. For example, a known prior art TX25 actuator, in a 4 mm diameter wood screw, can transmit a multiple of the screw's breaking torque because the actuator has a relatively large depth. This knowledge is used in the invention because it means that not all of the actuator's depth is required to screw in a screw.Therefore, according to the invention, a portion of the depth is used for a self-adhesive closure to hold screw 1 in the screw-head actuator element 6. Through the distinct angles α and γ of the two truncated conical surfaces of the screw-head actuator element 6 and the screw-head sleeve 2, such as 5° in the screw-head sleeve 2 and 10° in the screw-head actuator element 6, a very effective closure due to the shape occurs, which holds screw 1 in the screw-head actuator element 6. This inventive effect can be used in any screw-head actuator geometry. Another advantage is the cleaner axial movement of the screw-head actuator element 6.This prevents the screw head actuator 6 from being placed at an angle or crookedly on the screw 1, thus avoiding unwanted friction of the screw head bushing 2 and / or excessive wear of the screw head actuator. Petition 870260034168, dated 04 / 13 / 2026, page 23 / 60 17 / 18 is minimized or even completely prevented.

[0053] Figures 10a and 10b show a first embodiment of screw 1 according to the invention. Figure 10a shows screw 1 in a top view and Figure 10b shows a cross-sectional view of the screw of Figure 10a along line AA. In this embodiment, screw 1 has a protrusion 10 that runs substantially annularly around screw 1, substantially in the axial-longitudinal direction. The protrusion 15 preferably has a height of 0.75 mm. The shoulder 15 offers the advantage that it provides an additional depth T of the screw head bushing 2, whereby the outer section 3 can extend, at least partially, into the shoulder 15. Thus, the depth of the inner section 4 can be increased, thereby achieving a larger contact surface, transmitting force between the engagement geometry of the screw head bushing 2 and the attack geometry of the screw head actuating element 6.

[0054] Figures 11a and 11b show a second embodiment of screw 1 according to the invention, in which screw 1 has an outwardly sloping cover surface 16, which encircles the outer section 3 of the screw head sleeve 2 in a substantially annular manner, in a radial direction of screw 2. The cover surface 16 preferably drops by a height of 0.75 mm. Figure 11a shows screw 1 in a top view and Figure 11b shows a cross-sectional view of the screw of Figure 11a along line AA. Through the shape of the cover surface 16, in the same way as in the first embodiment of screw 1 according to the invention, the technical effect is achieved that an additional depth T of the screw head bushing 2 is provided.

[0055] Figures 12a and 12b show a third embodiment of screw 1 according to the invention. Figure 12a shows Petition 870260034168, dated 04 / 13 / 2026, page 24 / 60 Figure 18 / 18 shows screw 1 in a top view, and Figure 12b shows a cross-sectional view of the screw of Figure 12a along line AA. According to this embodiment, screw 1 has an outer surface 17, which extends in the longitudinal-axial direction of screw 1, and substantially completely surrounds the outer section 3 of the screw head bushing 2. The outer surface 17 preferably has a height of 1.31 mm. The outer surface 17 also provides an additional depth T of the screw head bushing 2, as well as additional mechanical stability of the outer section 3.

[0056] A known TX25 actuating element from the prior art has a screw head bushing depth T in the range of 0.19 mm - 2.3 mm. These depths T are achieved with a screw head bushing diameter in the range of 5 mm, and with a head diameter of 9.5 mm - 10 mm. The screw head height is then 5.8 mm - 5.2 mm.

[0057] Screw 1 according to the invention has, according to a defined screw size, a screw head height in the range of 5.75 mm, with the depth of the engagement geometry of the internal section 4 preferably being about 1.95 mm. The head diameter of screw 1 is then about 10 mm. In other screw sizes these values ​​scale correspondingly to the ratio of the same. Petition 870260034168, dated April 13, 2026, page 25 / 60

Claims

1 / 3 CLAIMS 1. Kit comprising a screw (1) with a screw head bushing (2), wherein the screw head bushing (2) has an outer section (3) and an inner section (4) that follows the outer section (3), wherein the outer section (3) of the screw head bushing (2) has, in at least one first axis (A1) oriented normal to a depth (T) of the screw head bushing (2), a diameter (D) larger than the inner section (4) of the screw head bushing (2), and characterized in that the outer section (3) of the screw head bushing (2) is configured substantially as a truncated cone that tapers towards the inner section (4) of the screw head bushing (2) and the inner section (4) of the screw head bushing (2) is configured as an engagement geometry for receiving without rotation a screw head drive element (6),wherein the kit further comprises the screw head actuator element (6) with an outer section (9) and an inner section (10) that follows the outer section (9), wherein the inner section (10) has, in at least one first axis (A1) oriented perpendicular to a height (H) of the screw head actuator element (6), a diameter (D) greater than the outer section (9), wherein the inner section (10) is configured substantially as a truncated cone that tapers towards the outer section (9), and the outer section (9) comprises an attack geometry that is configured to engage without rotation in an engagement geometry of the screw head bushing (2), wherein the inner section (10) of the screw head element (6) has a truncated cone surface with an angle of inclination (γ) relative to a cylindrical surface greater than a truncated cone surface of the outer section (3) of the screw head bushing (2) of the screw (1).

2. Kit according to claim 1, characterized by Petition 870260034168, dated 04 / 13 / 2026, page 26 / 60 2 / 3 fact that the outer section (3) of the screw head bushing (2) comprises a truncated conical surface inclined in the angular range of 2.5° to 10° relative to a cylindrical surface.

3. Kit according to claim 1 or 2, characterized in that the screw head bushing (2) comprises an insertion region (11) with insertion surfaces (12), disposed between the outer section (3) and the inner section (4), wherein the insertion surfaces (12) have an inclination of substantially 10° relative to a surface of the truncated cone of the outer section (3).

4. Kit, according to any one of claims 1 to 3, characterized in that the engagement geometry is a Philips geometry, a Torx geometry or a slotted geometry.

5. Kit, according to any one of claims 1 to 3, characterized in that the engagement geometry is a slotted geometry that runs through the screw head bushing (2) on a second axis (A2) different from the first axis (A1), oriented normal to the depth (T) of the screw head bushing (2).

6. Kit, according to any one of claims 1 to 5, characterized in that the inner section (10) of the screw head bushing (2) comprises a truncated conical surface inclined in the angular range of 2.5° to 10° relative to a cylindrical surface.

7. Kit, according to any one of claims 1 to 6, characterized in that the screw head actuating element (6) comprises an insertion region (11) with insertion surfaces (12), disposed between the outer section (9) and the inner section (10), wherein the insertion surfaces (11) have an inclination of substantially 10° relative to the base surface of the truncated cone of the inner section.

8. Kit, according to any one of claims 1 to 7, characterized in that the attack geometry is a Philips geometry, a Torx geometry or a slotted geometry.

9. Kit, according to any one of claims 1 to 8, characterized in that the attack geometry is a slotted geometry that runs along the screw head drive element (6) on a second axis (A2) different from the first axis (A1), oriented normal to the height (H) of the screw head drive element (6).

10. Kit, according to claim 1, characterized in that the screw (1) has a protrusion (15) that extends substantially in the longitudinal-axial direction of the screw (1), encircling the outer section (3) of the screw head bushing (2) which is substantially annular in shape.

11. Kit, according to claim 1, characterized in that the screw (1) has a cover surface (16) descending outwards in a radial direction from the screw (2), encircling the outer section (3) of the screw head bushing (2) which is substantially annular in shape.

12. Kit, according to claim 1, characterized in that the screw (1) has an outer surface (17) that extends in a longitudinal-axial direction from the screw (1), and surrounds the outer section (3) of the screw head bushing (2) in a substantially complete manner. Petition 870260034168, dated 13 / 04 / 2026, p. 28 / 60

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