Hexagonal Internal And External Thread Screws

Product introduction

Hexagonal internal and external thread screws, also known as blind rivet nuts, are a unique single-sided riveted fastener. Its exterior is a hexagonal structure, which can effectively prevent slipping during installation; its interior is prefabricated with standard internal threads. Its core function is to provide a strong and removable threaded base for materials that are difficult to tap, such as thin plates and pipes. Applying special engineering adhesives (such as Loctite anaerobic adhesive) to the threads is a key process to improve its performance. After assembly, the glue solidifies on the metal contact surfaces of the threads in isolation from air, forming a tough polymer layer. It can effectively prevent screws from loosening due to vibration and impact, significantly improve the locking force and sealing of threads, and prevent media leakage. This makes the rubberized hexagonal internal and external thread screws particularly suitable for harsh working conditions that require high anti-loosening, high sealing and fatigue resistance, such as automobile manufacturing, aerospace and heavy machinery and equipment.

 

Product Features

1. Efficient anti-loosening and anti-seismic: The special anaerobic adhesive pre-coated on the threads will solidify when isolated from the air after tightening, forming a tough polymer layer that can effectively resist impact and vibration, prevent screws from loosening, and ensure long-term reliability of the connection.

 

2. Excellent sealing: The cured glue layer can fill the tiny gaps between threads to form an effective seal, prevent liquid and gas leakage, and resist the intrusion of corrosive media, improving the sealing performance of the overall structure.

 

3. Single-sided riveting and high-strength threaded base: installation requires only one-sided operation, especially suitable for closed or thin plates and pipes that are difficult to construct on both sides. Its outer hexagonal structure effectively resists torsion, providing the material with a strong internal threaded hole that far exceeds its own strength.

 

4. Repeatable disassembly: Unlike welding or permanent riveting, pre-coated adhesives are usually designed with low to medium strength. When maintenance is required, they can be disassembled using standard tools, while the internal thread base is still intact and can be re-glued and used again, taking into account convenience and maintainability.

 

5. Anti-corrosion and anti-leakage: The glue layer isolates the direct contact between metal threads, can effectively prevent electrochemical corrosion, and has a certain insulating effect to avoid problems between different metals and leakage.

 

Product application

1. Automobile manufacturing: widely used in the fastening of body sheet metal, vehicle frames, engine brackets, gearboxes, chassis components and interior parts. Its anti-loosening and anti-seismic properties are crucial and can effectively deal with the continuous vibration of the vehicle while driving.

 

2. Rail transit: used for the installation of train carriage connections, interior panels, equipment brackets and track signaling equipment to ensure safe connections under high-speed operation.

 

3. Aerospace: Provide lightweight and reliable thread solutions in areas with extremely high weight and reliability requirements, such as aircraft skins, interior systems and equipment installation points.

 

4. Chassis cabinets: widely used in the assembly of sheet metal structures such as communication base station cabinets, server cabinets, and power control boxes. Its hexagonal shape prevents slipping, and its rubberized threads ensure a stable connection under long-term vibration.

 

5. Home appliances: Provide quiet and reliable fastening in home appliances with vibration and noise control requirements such as high-end washing machines and air-conditioning compressors.

 

6. Mechanical equipment: often used in machine tool protective covers, automated robot arms, conveyor line brackets, etc. to resist impact and vibration during equipment operation.

 

7. Architectural steel structure: used for the installation of thin-walled C-shaped steel, square steel, aluminum alloy doors, windows and curtain walls, providing a strong threaded base in scenarios where welding or backside operations are impossible.

 

8. The sealing and anti-corrosion properties of its adhesive layer also make it suitable for outdoor facilities (such as solar brackets, street lights), medical equipment, and container panels with slight anti-leakage requirements.

 

Product advantages

1. Reliability doubled: anti-loosening, anti-seismic, anti-fatigue

2. Achieve “strengthening with thinness” and achieve excellent carrying capacity

3. Excellent sealing and anti-corrosion performance

4. Convenient installation and high comprehensive benefits

5. Good maintainability and reusable

 

FAQ

Q1: What kind of glue is pre-coated on this screw? How does it work?

A1: Usually the anaerobic thread locking agent is pre-coated. The glue remains liquid in an oxygen-filled environment. Once extruded between the threaded metal surfaces and isolated from the air, it will quickly solidify to form a tough thermosetting plastic layer, thereby preventing loosening, sealing and locking.

 

Q2: Do I need to use specific tools during the installation process?

A2: Yes. Installing the external hexagonal part requires the use of a special rivet nut gun (rivet gun) and corresponding sleeve. Use a standard hex wrench to tighten internally threaded bolts. The right tools are key to ensuring a quality and efficient installation.

 

Q3: Can this product be disassembled and reused?

A3: Yes, but please pay attention. Removing the hexagon socket head bolts requires slightly more torque than normal. After disassembly, the original glue layer has been destroyed. If you need to achieve the anti-loosening sealing effect again, you must install new glue-coated screws or clean the threads of the old screws and then reapply a special liquid locking agent.

 

Q4: What is the main difference between glued screws and ordinary blind rivet nuts?

A4: The main difference is the anti-loosening and shock-proof performance and sealing. Ordinary blind rivet nuts only rely on mechanical friction to prevent loosening, and may loosen under strong vibration. Glue-coated products complement each other through chemical bonding and mechanical bonding, providing vibration fatigue resistance that far exceeds that of purely mechanical connections, and can effectively prevent leakage and corrosion.

L-Shaped Bolt

Special-Shaped Screws

Custom-Made Special-Shaped Screws

Stainless Steel Special-Shaped Screws