All about decorative screws

It is necessary for every person to know everything about decorative screws, because they just allow you to connect various products and achieve visual beauty. Having figured out what they are, what are the main sizes and their purpose, you can eliminate many mistakes. It is still necessary to study, however, the pros and cons of decorative screws.

It should be said right away that decorative screws are almost the same ordinary screws as all the others, but they have several important differences. The difference concerns:

• end part executions;

• threaded pitch;

• drills.

Any self-tapping screws are very valuable. Without them, it is impossible to build or repair something.

Otherwise, even the best components do not guarantee the success and stable use of the finished product.... It is the savings on fasteners that fail many people.

Professional fasteners of a decorative level must:

• guarantee a stable, good-quality connection at any point;

• simplify work as much as possible;

• maintain high performance;

• look beautiful and attractive;

• suitable for a variety of jobs;

• to achieve the durability of the joints.

Self-tapping screw is a rod with a head and a special thread... The cut from the outside fits exactly into the inside and forms the internal thread of the hole. It can cover the cylindrical surface either completely or partially. The connection of the various parts to each other takes place reliably.

Features can be seen on the example of a decorative brand self-tapping screw SPAX... These products are fully threaded and equipped with a half-countersunk head. The conical tip is made in a four-sided shape. This design allows the splitting of wood fibers without pre-drilling. This is achieved even with a small distance to the edge (but hard woods still need to be drilled).

The thread is made with an improved corrugated profile. This structure extends to the end of the product. Therefore, it can be screwed on quickly and reliably. The head has special milling edges. This head sinks flush, and thanks to the special spline, the tool does not slip when a large torque is transmitted.

The main difference between self-tapping screws is related to their chemical composition.... So, in carbon steel, iron and carbon are combined. The rest of the impurities are either absent at all, or present in a very limited amount - less than 1%. This alloy is mechanically very strong. Stainless metal is also widely used - this is steel, which includes up to 10.5% chromium.

This additive guarantees corrosion resistance. At the same time, the overall mechanical strength of the products grows. For the standard service life, a stainless self-tapping screw practically cannot corrode. Also note solid hygienic properties.

In some cases, decorative hardware is made from brass.

Countersunk head design means that when twisted it is completely immersed in the material to be bonded... The semi-countersunk type is distinguished by the smoothness of the "rod-thread" interface.Its design allows for high gain twisting. However, the semicircular design helps to build up the contact surface and increase the stability of the hitch.

There are also self-tapping screws with:

• semicircular heads with a press washer;

• truncated-conical "flea";

• hex head;

• cylinder;

• rare, medium or frequent carvings.

Decorative screws, like ordinary screws, can be used for:

• laying roofing material;

• joining sandwich panels;

• attachment of metal sheets;

• assembly of furniture products.

The application depends on the coverage.

Oxidized fasteners perfectly tolerates heavy loads, but still has poor contact with liquid. Phosphated models roads, but resistant to water ingress. Galvanized self-tapping screws predominantly designed for a purely atmospheric effect.