The self-tapping screw with cylindrical head features a continuous self-tapping thread along the entire shank, designed for direct fastening into thin sheet metal, profiles, and light metal materials, after drilling a properly sized pilot hole.
The thread geometry allows the thread to be formed directly in the base material during installation, eliminating the need for pre-tapping and significantly reducing assembly time.
To ensure optimal fastening performance and to prevent damage to either the substrate or the screw, it is essential to respect the correct pilot hole diameter; undersized holes do not improve holding strength and may adversely affect tightening torque and joint stability.
DIN 7981 (self-tapping thread geometry)
ISO 14585 (6-lobe drive)
Security drive specifications
The cylindrical head provides a large bearing surface and a clean, professional appearance, making it particularly suitable for applications where the head remains visible or must fit into cylindrical recesses.
The 6-lobe drive with central pin is an anti-tamper solution, designed to prevent the use of standard tools and to reduce the risk of unauthorized disassembly.
This drive system ensures excellent torque transmission, minimizes the risk of bit cam-out, and allows precise and controlled installation, even in automated assembly processes.
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