Self-tapping countersunk head screws feature a continuous thread along the entire shank, designed to allow direct fastening into thin sheet metal, profiles and light metal materials, after drilling a suitable pilot hole.
The thread geometry allows thread forming in the base material during installation, eliminating the need for prior tapping and reducing assembly time.
To ensure optimal fastening performance and prevent damage to the base material or the screw, it is essential to respect the correct pilot hole diameter. Undersized holes may compromise tightening torque and assembly stability.
The countersunk head is designed to provide a perfectly flush fit with the surface of the material, eliminating protrusions and ensuring a clean and professional appearance. This solution is particularly suitable for applications where a smooth and uniform surface is required.
The 6-lobe drive with central pin is a tamper-resistant solution, designed to prevent the use of standard tools and reduce the risk of unauthorized disassembly.
This drive ensures excellent torque transmission, minimizing the risk of bit cam-out and providing precise and controlled installation, even in automated applications.
DIN 7981 (self-tapping thread geometry)
ISO 14585 (6-lobe drive)
Security specifications for tamper-resistant drives
Self-tapping countersunk head screws with 6-lobe drive and pin are available in several material options, including:
The combination of mechanical strength, corrosion protection and tamper-resistant security makes this screw particularly suitable for technical and professional applications.
Screw length is measured from the tip to the underside of the head.
They are widely used in the following sectors:
Please send us an e-mail or fill in the form below to give feedback on your requests.
