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Special-Shaped Groove Anti-Theft Screw

Special-Shaped Groove Anti-Theft Screw has a self-tapping thread type, which makes it have good self-tapping performance on various materials. The special-shaped groove increases the anti-disassembly ability of the screw, greatly improving the safety performance.

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Hexagon Recessed Double Combination Screws

Hexagon recessed double combination screws have screw heads with a recess, which is usually a recess in the center of the hexagonal head to receive the screw installation tool. This design helps reduce the chance of damage to the screw heads and makes it easier for installation tools to align the screws.

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Hexagon Socket Screw With Pad

Hexagon socket screw with washer, also known as washer set screw or round head set screw, is a common fastener widely used in machinery, electronics, furniture and other fields. The screw head has a washer that can increase the contact area with the fixed surface when tightening, thereby providing higher stability. Hexagon socket screw with washer is usually made of high-strength materials such as stainless steel, alloy steel or carbon steel, with various surface treatments including electrogalvanizing, oxidation, Dacromet, etc. to enhance its corrosion resistance.

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Pan Head Anti-Theft Triangle Screw

The anti-theft triangular screw is made of carbon steel and the surface treatment is environmentally friendly blue-white zinc plating. It has good strength, durability and corrosion resistance, and can provide reliable performance in various application environments. Specification 2.2-14 means that the diameter of the thread is 2.2 mm and the length ranges from 3 to 180 mm, which can meet different fixing needs.

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Environmental Protection Black Zinc Hexagonal Screw

Environmentally friendly Black Zinc Hex Screws are coated with a layer of black zinc, which acts as a solid barrier against environmental factors, greatly enhancing their ability to resist rust and corrosion. This protective coating is particularly beneficial in preventing moisture penetration, ensuring that the screws maintain their integrity and strength even in adverse weather conditions.

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Metal Self-Tapping Lock Screws

Self-Tapping screws can tap their own hole as they are driven into a material. This eliminates the need for a pre-drilled hole. They often include a locking feature to prevent the screw from loosening under vibration or stress. Typically made from various metals such as steel, stainless steel, or brass to provide strength and resistance to corrosion.

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Cross Countersunk Head Self-Tapping Locking Screws

Cross Countersunk Head Self-Tapping Locking Screws have bright heat treatment on the surface, are designed in the shape of countersunk head, have self-tapping locking teeth, and are equipped with cross slots for easy installation with a screwdriver. Its tensile strength reaches or exceeds 500Mpa, ensuring reliability under high stress conditions. In terms of hardness, the Vickers hardness is between 155 and 220HV, and the Brinell hardness is between 147 and 209HBS, providing good wear resistance and durability.

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Cross Pan Head Self-Tapping Locking Screw

Cross Pan Head Self-Tapping Locking Screw is a type of fastener designed for specific applications where both the self-tapping and locking features are necessary. Have sharp, cutting threads that allow them to tap their own threads into softer materials like wood, plastic, or soft metals. The tip of the screw is typically sharp and pointed, facilitating the initial penetration and thread-

Tel：+86-574-88071168 E-mail：sales@risheng-cn.com

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Special-Shaped Groove Anti-Theft Screw

Special-Shaped Groove Anti-Theft Screw has a self-tapping thread type, which makes it have good self-tapping performance on various materials. The special-shaped groove increases the anti-disassembly ability of the screw, greatly improving the safety performance. Its tensile strength is as high as 450Mpa, the surface hardness is ≥450HV, and the core hardness is between 270-390HV, ensuring the durability and stability of the screw in high-stress environments. 

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screw/dovetail screw

Self-Drilling Screw have a drill bit point that allows them to cut their own hole as they are driven into material. They are commonly used in metal and wood and eliminate the need for a pre-drilled hole, making them very efficient for certain applications.

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Alloy Steel Flat Head Tapping Screws

Flat Head Tapping Screws are made of high-quality alloy steel with mechanical properties and durability. The slot type is cross slot, which is convenient for installation and removal with a cross screwdriver. The tensile strength of the screw is 1040-1220Mpa, which has extremely high tensile properties and can maintain a reliable connection under high loads. The Rockwell hardness is between 32-39HRB, ensuring the balance of hardness and toughness of the screw.