DIN 7982 Countersunk Head Self-Tapping Screw for Thin Metal Sheets and Plastic with Blunt Point, Type F

The European standard DIN 7982 covers self-tapping screws for fastening thin metal sheets and plastic. Type F fasteners are fitted with a blunt point; installation in the material requires a pre-drilled hole. There is no need to cut a thread separately: as it is driven in, the screw forms its own thread for a secure fit. The fastener has a countersunk head that sits fully flush with the material surface when driven in with a screwdriver or power driver. For convenient driving, the head has a cross recess or Torx drive.

Materials and characteristics

The fasteners are made of hardened steel, which may have a zinc, chromium or nickel coating for corrosion protection. Self-tapping screws made of A2 and A4 stainless steel are also widely used – these alloys are corrosion-resistant and suitable for use in aggressive environments. The choice of material depends on the conditions of use for the fastener.

Products of this type may have the following characteristics in accordance with the standard:

• The threaded shank length can range from 6.5 to 80 mm.
• The thread diameter of the self-tapping screw can range from 2.2 to 8 millimeters.
• The head size can range from 4.3 to 16.1 mm. Thanks to its countersunk shape, it does not protrude above the surface – this simplifies further finishing.

Self-tapping screws with a blunt tip are suitable for fastening various thin sheet materials, from aluminium sheets to plastic. These fasteners are used in mechanical engineering and other industrial sectors, and are applied in exterior and interior finishing work. The fasteners provide a secure fixation of materials to various frames.

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FLOK supplies fasteners in wholesale batches.