DIN 7976 Hexagon Head Self-Tapping Screw Form C

The European standard DIN 797 covers self-tapping screws with a pointed tip. These fasteners are designed for driving into soft metals while cutting their own thread; installation is fast and provides a reliable fastening.

They are suitable for assembling aluminium structures, fastening sheet metal, as well as plywood, hardboard and other wood-based materials. A feature of the installation is that there is no need to pre-drill a hole in the material: it is drilled directly during installation of the fastener.

Materials and application

The form C self-tapping screw is fitted with a hexagon head, which is convenient for tightening with a wrench of the corresponding diameter. The material used for production is steel C1018 or C1022, with a layer of white or yellow zinc used as the corrosion-resistant coating. Austenitic steel A2 may also be used – it has increased acid resistance, and the fastener can be used in moist and chemically aggressive environments.

This fastener product has the following technical characteristics:

• The length of the metal shank ranges from 6.5 to 70 mm.
• The head diameter ranges from 2.2 to 8 millimetres.
• The most common thread diameter options are ST2.2m ST2.9, ST3.5, ST3.9, ST4.2, ST4.8, ST5.5.
• The closest equivalent is manufactured in accordance with the international standard ISO 1479.

Fasteners of this type are widely used in construction and finishing work, as well as in industrial production. They are used for fastening various sheet materials to frames, and are suitable for installing cladding, interior partitions, building facade finishing and more. Stainless steel fasteners can be used for both outdoor and indoor work.

Terms of sale at FLOK

FLOK supplies fasteners that meet the requirements of the standard. Sales are conducted in small and large wholesale lots, with the option of ongoing supply for enterprises and construction organizations. Deliveries are offered to any region, and a discount system is available for wholesale buyers.