The Big Role Of The Small Self-tapping Screw

The Big Role Of The Small Self-tapping Screw
The Big Role Of The Small Self-tapping Screw

Video: The Big Role Of The Small Self-tapping Screw

Отличия серверных жестких дисков от десктопных
Video: Self Tapping vs Self Drilling Sheet Metal Screws and the differences between them 2023, February
Anonim

The service life of the roof depends on the minimum service life of all components and on the quality of installation. If you want to provide comfort and warmth for your family - remember: there are no minor trifles in building a house, and even a small self-tapping screw can play a significant role in the fate of your roof.

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High-quality self-tapping screw

To ensure the tightness of the attachment point, the roofing screw must necessarily have a rubber washer. Self-tapping screws are of high quality and, let's say, not quite. On a low-quality self-tapping screw, the rubber gasket is easily separated from the washer. High-quality self-tapping screws are usually marked (Fig. 1, 2).

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Poor self-tapping screw

If you buy unnamed screws, it is likely that the rubber washer on it will collapse in two years, moisture will get under the screw cap, and rusty smudges will appear on the roof that you were so proud of.

For the production of branded self-tapping screws, high-quality carbon steel with an anti-corrosion coating or stainless steel is used, products from which are about twice as expensive.

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High-quality self-tapping screw

One of the ways to distinguish high-quality and low-quality self-tapping screws is to squeeze the washer with pliers. On the branded self-tapping screw, the painted surface and rubber gasket will remain intact (Fig. 3).

If the quality is poor, the paint will peel off and the rubber washer will be damaged (Fig. 4).

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Poor self-tapping screw

The most famous brands of self-tapping screws are SFS and Ferrometal. These self-tapping screws are made in Europe, pass the strictest quality control, and are tested for prolonged and extreme loads. Each screw must withstand 20,000 vibrations at 5 degrees, 2000 at 10 degrees, and 100 at 15, without irreversible changes in the metal structure, which corresponds to a more than 50-year life cycle of metal structures. In the production of such self-tapping screws, only EPDM gasket is used - a weather-resistant rubber of increased elasticity, resistant to temperature and chemical influences.

Leading manufacturers of metal tiles complete their products only with high-quality fasteners, and in the case of fakes used by developers, they are denied guarantees. No insurance company will insure an object if the fastenings are of dubious quality.

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