DIN 7504-P is the European standard for self-drilling screws with a pan head, widely used in metal-to-metal fastening. Unlike ordinary screws, these have a drill bit tip — no pre-drilling needed.
What the standard covers
The standard specifies self-drilling pan head screws in steel or stainless steel. The "P" means pan head: low, rounded, with a wide bearing surface.
Key specs
Material: carbon steel (case-hardened) or stainless steel (A2/A4). Drives: Phillips, Pozi, or hex. Drilling capacity: 0.5–3mm metal thickness. Thread: fine thread for sheet metal. Coatings: zinc plated or corrosion-resistant options.
How they work
The drill point (sometimes called a tek point) handles three jobs at once: drills the hole, forms the thread, draws the fastener in. One step instead of two. That's the whole point.
Where they show up
Steel frames, sheet metal fabrication, HVAC ducting, roofing and cladding, automotive production, electrical enclosures. Any job where you're fastening sheet metal and don't want to switch between a drill and a driver.
Stainless versions
A2 (304) handles normal indoor and sheltered outdoor use fine. Go with A4 (316) if you're near the coast or dealing with chemicals — the extra nickel and molybdenum make a real difference.
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