Stainless Steel Internal Plum Blossom-Shaped Countersunk Screw

Product introduction

Stainless steel torx countersunk head screws are high-end fasteners that combine appearance, anti-loosening and excellent performance. The head adopts a unique countersunk head design and an inner plum blossom (commonly TORX) notch combination, which not only provides strong fastening force, but also achieves a smooth installation surface and an efficient assembly experience. The core advantage of the product lies in its excellent materials and exquisite design. Made of 304 or 316 stainless steel, it has excellent corrosion resistance and rust resistance, and can adapt to harsh environments such as moisture and chemical corrosion, ensuring long-term reliability and aesthetics. Compared with traditional slotted or cross-shaped slots, the internal torx slot has higher torque transmission efficiency and anti-cam-out (screwdriver slippage) ability, allowing greater tightening torque to be applied, effectively protecting the screw slot and improving assembly quality. Combined with the countersunk head design, the head of the screw can be perfectly embedded into the surface of the workpiece after tightening, forming a flat and smooth connection. It not only has a simple appearance, but also avoids interference caused by protrusions. It is very suitable for occasions with high requirements for surface smoothness, such as high-end furniture, precision equipment, automotive parts, aerospace and other fields.

 

Product features

1. Excellent corrosion resistance

One of the core advantages. Made of austenitic stainless steel such as 304 or 316, the screws have excellent rust and corrosion resistance and can easily cope with moisture, salt spray and various chemical media, ensuring long-term stable use in harsh environments such as outdoor, food, and chemical industries.

 

2. Extremely high torque transmission and tooth slip resistance

Its internal Torx notch is the key feature. This star-shaped notch provides a large tool contact area, allowing the torque to be evenly distributed during tightening, effectively preventing the screwdriver head from slipping, protecting the screw notch from damage, and allowing greater tightening torque to be applied than traditional cross recess or slot recess.

 

3. Smooth and smooth installation effect

The countersunk head design allows the head of the screw to be fully embedded under the surface of the workpiece after tightening, forming a smooth, convex-free surface. This not only improves the appearance of the product, but also avoids possible interference or safety hazards caused by protrusions, making it very suitable for applications that have high requirements for surface streamlines.

 

4. Excellent anti-loosening and fastening capabilities

The high torque transfer capabilities of the Torx notch means a more reliable, tighter threaded connection is achieved. Combined with the correct pre-tightening force, it can effectively resist vibration and looseness, ensuring the long-term stability of the connection.

5. Convenient and efficient assembly experience

The inner torx notch makes the installation tool (screwdriver) more neutral and less likely to slip out, which greatly improves assembly efficiency, reduces operating difficulty and tool loss, and is especially suitable for automated mass production.

 

Product application

1. High-end furniture and home decoration

Widely used in the installation of modern panel furniture, cabinets, bathroom hardware and home decorations. Its countersunk head design can be completely embedded into the material, forming a smooth and flat surface without protruding interference, which is both safe and beautiful. Stainless steel ensures durability in humid kitchen and bathroom environments.

 

2. Precision machinery and instrumentation

Commonly used in panel fixing of machine tool casings, testing equipment, and precision instruments. The inner torx notch can withstand high torque, ensuring firm tightening and not easy to loosen in a vibrating environment. The flat head does not hinder the movement or measurement of other components, maintaining the overall cleanliness and accuracy of the device.

 

3. Transportation

It is widely used in the fixation of interior panels and parts of automobiles, high-speed rails, and even bicycles. Its smooth countersunk head avoids unnecessary protrusions, reducing assembly gaps and windage noise. The stainless steel material can resist corrosion from road salt and rainwater, ensuring the long-term reliability of the connection.

 

4. Electronic products and electrical appliance casings

It is commonly used in server chassis, high-end audio, electrical control panels and other occasions that require frequent maintenance or require electromagnetic shielding. The countersunk head design achieves smooth docking of the shell, and the inner plum blossom notch can withstand repeated disassembly and assembly without slipping, which greatly extends the product life.

 

5. Architectural decoration and outdoor facilities

Suitable for the installation of outdoor billboards, signs, handrails, etc. that require smooth surfaces. The characteristics of stainless steel enable it to withstand wind and rain erosion for a long time, keeping it beautiful and rust-free. At the same time, the countersunk head design improves the overall visual unity and safety.

 

FAQ

Q: What is a plum box? What advantages does it have compared to cross slot and slot?

A: The Torx groove is a star-shaped spline groove. Its core advantages are: higher torque transmission: larger contact area, able to withstand greater tightening torque, and less likely to slip. Anti-slip: The tool head is not easy to slip out of the slot, protecting the screw slot from damage and extending the service life. Improve assembly efficiency and quality: It is particularly suitable for automated production and can achieve consistent and reliable fastening effects.

 

Q: What is the purpose and function of countersunk head design?

A: The main purpose of the countersunk head design is that when the screw is fully tightened, its head can be fully embedded and flush with or lower than the surface of the workpiece. This results in: Flat and smooth surface: No protrusions, beautiful and safe. Avoid interference: Will not interfere with the movement or installation of other components. Fluid Dynamics: Wind or fluid resistance can be reduced on some equipment.

 

Q: How should I choose between 304 and 316 stainless steel in the product description?

A: The choice depends on the use environment. 304 stainless steel: universal type, with good corrosion resistance, suitable for most daily and industrial environments, such as indoor furniture, dry mechanical equipment, etc. Great value for money. 316 stainless steel: Contains molybdenum, which significantly improves its resistance to chloride corrosion. It is highly recommended for use in coastal areas, ships, chemical plants, electroplating equipment or harsh environments exposed to salt and chemical reagents.

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