The DIN 7504 K standard specifies the following requirements for bolted connections:
There are several ways to access the DIN 7504 K standard PDF: din 7504 k standard pdf
: The most significant feature is the drill-bit-shaped point. This allows the screw to drill, tap, and fasten in one step, eliminating the need for pre-drilling and reducing installation time. The DIN 7504 K standard specifies the following
The standard specifies the requirements for self-drilling tapping screws with a hexagonal head and an integrated flange (stamped washer) . Often referred to as "Tek screws," these fasteners are engineered to drill, tap, and fasten in a single operation, eliminating the need for pre-drilled pilot holes in metal substrates. Often referred to as "Tek screws," these fasteners
The standard requires the screw to withstand a specific twist angle without breaking, ensuring it can handle the torque applied during the drilling process. Applications
The standard specifies the marking and packaging requirements:
The standard applies to screws with metric ISO threads (M2 to M12 typically) made of steel or stainless steel. These screws are intended for use in: