Self-tapping screws corrosion-proof with a secret head

What is a stainless steel self-tapping screw with a countersunk head?

This is a popular fastener, which is manufactured in accordance with the requirements of DIN 7982, ISO 7050 and GOST 10619-80. Other names that are found in everyday life - self-tapping screws and self-tapping screws.

These self-tapping screws with a head of a secret form are made. There is a slot at the end of the head. The slot can be of several types: cruciform, star-shaped or straight. For twisting use special tools (screwdrivers or screwdrivers), with nozzles according to the type of slot.

Like DIN 7981 self-tapping screws, stainless steel countersunk screws can have sharp (C-shaped) or blunt (F-shaped) ends.

There are self-tapping screws with a secret head on:

• Head heights: 1.3, 1.7, 2.1, 2.3, 2.5, 3.0, 3.4, 3.8, 4.65 mm.

• Head diameters: 4.3, 5.5, 6.8, 7.5, 8.1, 9.5, 10.8, 12.4, 15.8 mm.

• Thread lengths: 9.5, 12, 13, 16, 19, 25, 32 mm.

• Thread diameters: 2.2, 2.9, 3.5, 3.9, 4.2, 4.8, 5.5, 6.3 mm.

If a stainless steel screw with a countersunk head and a blunt end F is used, it is necessary to mark and pre-drill holes in the material before installing it. The diameter of the holes must exactly match the diameter of the hardware.

Self-tapping screws with a countersunk head (DIN 7982, GOST 10619-80) are made of A2 stainless steel and A4 acid-resistant steel. Thanks to the alloying elements which are a part of steels, self-tapping screws with a secret head of DIN 7982 are steady against influence of corrosion, external atmospheric phenomena, sharp differences of temperatures, well show in the conditions of the increased humidity, etc. A4 steel products can be used in structures that come into contact with some aggressive environments: salty seawater, acids and alkaline solutions.

Stainless steel self-tapping screw with a countersunk head?

Due to their high technical characteristics and versatility, self-tapping stainless steel screws (DIN 7982) are widely used in various industries and industries to create strong, reliable and durable permanent joints. For example: in mechanical engineering, during production, assembly and installation of furniture, installation of various hinged structures, in various construction, repair and finishing processes, in many industries, in the production of agricultural equipment and installations, in everyday life and more.

Basically, this fastening is used to load-bearing structures made of such materials as: various types of metal, wood, plywood, hardboard, etc. When working with these products, for complete immersion of the metal in the surface of the material, it is necessary to perform chamfers for concealed heads.

When installing some structures, such as concrete, brick, plasterboard frames, etc., this fastening can act as a dowel.

It is convenient that when screwing self-tapping screws with countersunk heads in wood or plastic, you do not need to make pre-holes in the materials. However, to connect thicker and stronger materials (metals), the holes must be prepared in advance.

High quality steel, sharpening of the tip and thread, make it possible to tighten screws without damaging the materials.

Where to buy and how to deliver stainless steel screws with a countersunk head (DIN 7982, GOST 10619-80)?

The full range of stainless steel mounts is available on our Dinmark website.

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