Self-tapping countersunk head screws with hex socket and central pin feature a continuous self-tapping thread along the entire shank, designed to allow direct fastening into sheet metal, thin profiles and light metal materials through a pre-drilled hole, without the need for prior tapping.
The thread geometry, typical of high-quality industrial fasteners, ensures excellent penetration capability and accurate thread forming in the base material, providing high mechanical holding strength and excellent resistance to loosening.
For optimal performance, it is essential to comply with the recommended pre-drilling diameter; incorrectly sized holes may compromise tightening torque and fastening stability.
The countersunk head is designed to allow perfectly flush fastening with the surface of the material, ensuring a clean and professional appearance. This configuration is ideal for applications where a smooth and uniform surface without protrusions is required.
The hex socket with central pin (security hex socket) provides two main advantages:
This solution is particularly suitable for applications requiring safety, reliability and controlled access, significantly reducing the risk of unauthorized disassembly.
Self-tapping countersunk head screws with hex socket and pin are available in the most commonly used materials for premium-grade fasteners, including:
Screw length is measured from the tip to the underside of the head, in accordance with international standards.
They are widely used in:
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