Hollow Bolts With Flat Head and Square Neck And Inner And Outer Teeth

Product introduction

The flat head square neck hollow internal and external thread bolt is an innovative multi-functional fastener. Its unique design integrates flat head, square neck and hollow structure: the square neck is embedded in the mounting hole to effectively prevent the bolt from rotating and ensure a stable installation; the flat head is flush with the installation surface and has a clean appearance; the hollow structure has both internal and external threads, which can be used as a through-hole channel for cables and pipelines, and can be expanded to connect other components. This product is widely used in mechanical equipment, electrical installation and building curtain walls where anti-rotation, flat installation and functional integration are required. It is an ideal solution to improve installation efficiency and reliability.

 

Product features

1. Efficient anti-rotation self-locking: The unique square neck design closely matches the square hole in the installation hole, which can effectively prevent the bolt from rotating when tightening the nut, eliminating the trouble of using double wrenches to fix, making the installation more convenient and the connection more reliable.

2. Smooth installation surface: The flat head design allows the bolt head to be completely sunk into the installation surface and flush with the surface of the component. It not only looks neat and beautiful, but also does not interfere with the movement or installation of other components.

3. Multifunctional hollow structure channel function: The hollow inner hole can be used as a passage for cables, pipes or sensors to realize internal wiring and improve the integrity and aesthetics of the equipment. Expanded connection: There are internal threads processed inside, and the connection function can be expanded by installing another screw, realizing "one bolt for multiple purposes" and enriching design possibilities.

4. Lightweight design: Compared with solid bolts of the same specifications, its hollow structure significantly reduces the weight of the product, helping to achieve the goal of lightweighting the equipment.

5. Wide applicability: It combines many advantages such as anti-rotation, flatness, through holes, and connections, making it especially suitable for fields with high installation requirements such as mechanical equipment, electrical cabinets, rail transit, building curtain walls, and automation systems.

 

Product application

1. Mechanical equipment manufacturing: often used in the installation of movable connection parts that require frequent adjustment or prevention of loosening, such as equipment protective covers, door covers, and transmission components. The square neck can effectively withstand vibration, ensuring a long-lasting and stable connection.

2. Building curtain walls and steel structures: widely used in the fixation of metal plates, curtain wall frames, aluminum alloy doors and windows, etc. Its flat head design can achieve a flat appearance, and the square neck prevents rotation in the installation groove, ensuring safety and beauty.

3. Electrical and automation control: Ideal for control cabinets, switch boxes, motor bases and other equipment. Its hollow structure can be used as a cable hole to neatly route internal and external cables, while also achieving grounding or fixed connection between the box and internal components.

4. Rail transit and vehicle engineering: suitable for the installation of vehicle interior panels, floor battens and various accessories. Its anti-rotation properties adapt to constant vibrations during vehicle operation, and the hollow portion can be used for wiring harness fixation or as a ventilation/drainage channel.

5. High-end furniture and exhibition equipment: Used in situations where concealed installation and high connection strength are required, such as load-bearing brackets, detachable connectors, etc., which can not only ensure structural safety, but also achieve beautiful flat effects.

 

FAQ

Q: What is the core advantage of this bolt?

A: Its core advantage is functional integration. It solves the anti-rotation problem through the "square neck", solves the flatness problem through the "flat head", realizes the functions of threading pipes and extended connections through the "hollow internal and external teeth", and one bolt replaces the traditional effect that requires the combination of multiple parts to achieve.

 

Q: What is the specific function of the square neck position? How to install?

A: The main function of the square neck is to prevent the bolt from rotating. During installation, a square hole that matches the size of the square neck needs to be pre-machined on the mounting base plate (or a special washer is used). During installation, insert the square neck into the square hole and tighten the nut. Even if the bolt head is not fixed at this time, it will not rotate with the nut, simplifying the installation process.

 

Q: What is the purpose of the internal thread in the hollow part?

A: Internal threads have two main uses: expansion connection: a smaller bolt or eye can be screwed in to connect and hang other components. Sealing: When not in use, a screw plug can be used to seal the internal threaded hole to seal and prevent dust.

 

Q: Is it suitable for environments with strong vibrations?

A: Yes, very suitable. Its square neck design provides excellent resistance to torsion and vibration loosening. If used with anti-loosening nuts or spring washers, the anti-loosening effect will be better and can effectively cope with continuous vibration conditions, such as mechanical equipment, vehicles, etc.

 

Q: Is its load-bearing capacity worse than solid bolts?

A: Yes, due to the hollow structure, its tensile and shear strength will be lower than solid bolts of the same specification. When selecting key load-bearing parts, be sure to make calculations based on the mechanical property data provided by the manufacturer to ensure that safety requirements are met.

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