Inner hexagonal screw fastener
By setting hexagonal grooves, sockets, anti-slip grooves, and slotted grooves on the hexagonal socket screw fasteners and coating them with a wear-resistant coating, the problem of wear and slippage during the disassembly and assembly of hexagonal socket screw fasteners is solved, achieving a more efficient disassembly and assembly process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO JIATENG NEW MATERIAL CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-05-15
AI Technical Summary
During the disassembly and assembly of existing hex socket screws, the hex socket grooves are prone to wear and slippage between the tool and the screw, which affects the efficiency of disassembly and assembly.
A hexagonal socket screw fastener has been designed. The bolt head is provided with a hexagonal groove, a socket and an anti-slip groove. It is coated with a wear-resistant coating and a slotted groove is provided on the surface of the bolt head. It can be disassembled and assembled using a plug and a flathead screwdriver. The bolt and bolt head are treated with rust prevention.
It effectively prevents slippage and wear between the hex wrench and the internal hex groove, reduces wear, and improves the ease of disassembly and assembly.
Smart Images
Figure CN224245216U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of internal hexagon screws, and more particularly to an internal hexagon screw fastener. Background Technology
[0002] A hex socket head cap screw is a common mechanical fastener consisting of a bolt head and a threaded shank. The bolt head is cylindrical with a hexagonal recess at the top, while the shank has external threads for mating with nuts or other threaded parts to achieve a fastening connection.
[0003] However, with existing hexagonal socket screws, the hexagonal groove and the tool are prone to wear during disassembly and assembly, leading to slippage and affecting disassembly and assembly.
[0004] Therefore, it is essential to invent a hexagonal socket screw fastener. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides a technical solution for an internal hexagonal screw fastener: an internal hexagonal screw fastener, including a stud, a bolt head, an internal hexagonal groove, insertion holes, a hexagonal wrench, and a plug, wherein: the top of the stud is provided with an integral bolt head, the upper surface of the bolt head is provided with an internal hexagonal groove, the bottom of the internal hexagonal groove of the bolt head is provided with a plurality of insertion holes evenly distributed, and one end of the hexagonal wrench is provided with a plurality of plugs corresponding to the insertion holes evenly distributed.
[0006] The outer surface of the bolt head is provided with anti-slip grooves.
[0007] The outer surface of the bolt head is uniformly provided with several slots, and the depth of the slots is greater than the depth of the anti-slip grooves.
[0008] The surfaces of the studs, bolt heads, hex wrenches, and plugs are all coated with a wear-resistant and corrosion-resistant coating.
[0009] Both ends of the bolt head are chamfered.
[0010] The studs and bolt heads are treated with rust prevention.
[0011] Compared with the prior art, the advantages of this utility model are:
[0012] The overall design of this utility model can prevent slippage between the hex wrench and the internal hex groove during disassembly and assembly, reducing wear and thus facilitating disassembly and assembly. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the internal six grooves, sockets, and plug structure of this utility model.
[0014] Figure 2 This is a schematic diagram of the structure of the hexagonal wrench and plug inserted into the internal hexagonal groove and socket of this utility model.
[0015] Figure 3 This is a partially enlarged structural diagram of point A of this utility model.
[0016] In the picture:
[0017] 1. Stud, 2. Bolt head, 3. Hex socket, 4. Anti-slip groove, 5. Flat slot, 6. Hex wrench, 7. Plug. Detailed Implementation
[0018] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0019] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.
[0020] The present invention will be further described below with reference to the accompanying drawings: Example
[0021] Reference Figure 1-3A type of internal hex screw fastener includes a stud 1, a bolt head 2, an internal hex groove 3, a socket 4, a hex wrench 7, and a plug 8, wherein: the top of the stud 1 is provided with an integral bolt head 2, the upper surface of the bolt head 2 is provided with an internal hex groove 3, the bottom of the internal hex groove 3 of the bolt head 2 is provided with a plurality of sockets 4 evenly distributed, and one end of the hex wrench 7 is provided with a plurality of plugs 8 corresponding to the sockets 4 evenly distributed;
[0022] Specifically, there are six evenly spaced sockets 4, which are diamond-shaped.
[0023] The shape and number of plugs 8 correspond to those of sockets 4.
[0024] Specifically, anti-slip grooves 5 are provided on the outer surface of the bolt head 2.
[0025] Specifically, the outer surface of the bolt head 2 is evenly provided with several slots 6. The depth of the slots 6 is greater than the depth of the anti-slip grooves 5. The slots 6 are designed so that a flathead screwdriver can be inserted into them to disassemble or assemble the bolt.
[0026] Specifically, the surfaces of the stud 1, bolt head 2, hex wrench 7, and plug 8 are all coated with a wear-resistant and corrosion-resistant coating, such as a carbide coating or a ceramic coating. The coating can improve the surface hardness and wear resistance of the internal hex groove 3, and reduce friction and wear between it and the hex wrench 7.
[0027] For example, applying a hard alloy coating using physical vapor deposition (PVD) or chemical vapor deposition (CVD) techniques can improve the wear resistance of grooves by several times.
[0028] Specifically, both ends of the bolt head 2 are chamfered to make the surface of the bolt head 2 more rounded.
[0029] Specifically, stud 1 and bolt head 2 undergo rust prevention treatment, such as galvanizing or nickel plating, to prevent the bolt from rusting. Rust increases the surface roughness of the groove, reduces strength and wear resistance, and may also lead to poor fit between the bolt and the wrench. For example, hot-dip galvanizing can form a uniform zinc layer on the bolt surface, providing excellent rust prevention.
[0030] In this embodiment, when disassembling or assembling the internal hex screw fastener, if a hex wrench 7 with a plug 8 is available, the end of the hex wrench 7 with the plug 8 can be inserted into the internal hex groove 3 and the socket 4. This will prevent slippage and wear between the hex wrench 7 and the internal hex groove 3 during rotation.
[0031] If a hex wrench 7 with a plug 8 is not available, a regular hex wrench can be used for disassembly and assembly. In this case, simply insert one end of the regular hex wrench into the internal hex groove 3. However, when disassembling and assembling with a regular hex wrench, slippage and wear may easily occur between the hex wrench and the internal hex groove 3.
[0032] If a regular hex wrench becomes slippery or worn after disassembly and assembly, a flathead screwdriver can be inserted into the flathead slot 6 for disassembly and assembly.
[0033] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.
Claims
1. A type of internal hexagonal screw fastener, characterized in that: It includes a stud (1), a bolt head (2), an internal hex groove (3), a socket (4), a hex wrench (7), and a plug (8), wherein: the top of the stud (1) is provided with an integral bolt head (2), the upper surface of the bolt head (2) is provided with an internal hex groove (3), the bottom of the internal hex groove (3) of the bolt head (2) is provided with a number of sockets (4) evenly, and one end of the hex wrench (7) is provided with a number of plugs (8) corresponding to the sockets (4).
2. The internal hexagonal screw fastener as described in claim 1, characterized in that: The outer surface of the bolt head (2) is provided with anti-slip grooves (5).
3. The internal hexagonal screw fastener as described in claim 2, characterized in that: The outer surface of the bolt head (2) is uniformly provided with several slots (6), and the depth of the slots (6) is greater than the depth of the anti-slip grooves (5).
4. The internal hexagonal screw fastener as described in claim 3, characterized in that: The surfaces of the stud (1), bolt head (2), hex wrench (7) and plug (8) are all coated with a wear-resistant and corrosion-resistant coating.
5. The internal hexagonal screw fastener as described in claim 4, characterized in that: Both ends of the bolt head (2) are chamfered.
6. The internal hexagonal screw fastener as described in claim 5, characterized in that: The stud (1) and bolt head (2) are treated with rust prevention.