chemical expansion bolt

One of the key features of security tek screws is their unique design, which includes a specialized head that requires a matching tool for installation and removal. This tool, often referred to as a security bit or drive, has a specific shape that fits into the head of the screw, allowing it to be tightened or loosened. Without the correct tool, it is nearly impossible to tamper with security tek screws, making them an ideal choice for high-security environments.

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One of the key features of 75mm tek screws is their self-drilling capabilities, which allow them to penetrate tough materials with ease. This makes them suitable for applications where a secure and strong fastening is required. The sharp threads of tek screws provide excellent grip and prevent loosening over time, ensuring a long-lasting and reliable connection The sharp threads of tek screws provide excellent grip and prevent loosening over time, ensuring a long-lasting and reliable connection The sharp threads of tek screws provide excellent grip and prevent loosening over time, ensuring a long-lasting and reliable connection The sharp threads of tek screws provide excellent grip and prevent loosening over time, ensuring a long-lasting and reliable connectiontek screws 75mm.

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Hex head self-tapping bolts are characterized by their hexagonal head, which allows for easy tightening and loosening using standard hex wrenches or sockets. The self-tapping feature means that these bolts are designed to create their own threads as they are driven into materials, such as metal, wood, or plastic. This eliminates the need for a separate tapping operation, making them ideal for applications where speed and efficiency are paramount.


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Self-drilling screws, also known as “Tek” screws, feature a unique design that incorporates a drill bit-like tip, allowing them to create their own hole as they are driven into materials. This feature eliminates the need for pre-drilling, saving time and effort during installation. Galvanized screws, on the other hand, are coated with a layer of zinc to enhance their corrosion resistance. This dual functionality makes self-drilling galvanized screws ideal for a wide range of applications, especially in outdoor and critical structural projects.


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