Features of furniture screws, selection tips

0

19598

Modern industry offers a wide selection of the latest accessories for fastening, which greatly facilitate the assembly of furniture products, increase the period of its operation even in the most adverse conditions. Among the many types of connecting fittings for furniture, a furniture screw occupies a leading position.

What is the purpose

A furniture screw is a special fastener, the main purpose of which is to connect parts from wood materials by screwing and creating threads inside the product. It is used in the assembly of furniture structures, carpentry and building products, since such fastening positively affects the quality of furniture, its service life, and aesthetics.

It is used for such building materials that are used in the manufacture of cabinet furniture, such as:

• massive wooden sheets;
• chipboard;
• fiberboard;
• Chipboard;
• plywood;
• thin drywall.

Externally, the furniture screw is a rod made of metal and decorated:

• a head of a certain shape, which is part of the fastener, and also serves to transmit torque;
• slot - a recess of a certain shape in the end of the head of a hardware;
• massive, broadly protruding above the main shaft, a thread, the lower turns of which are conical and have notches;
• sharp tip.

Due to the large threaded and rod surface, the load on the curled parts is minimized. As a result, the assembled structure becomes resistant to any impact. Also, the screws are in close contact with the fastened material due to the same diameter of the smooth and rod parts of the hardware.

In the manufacture of furniture screws use high-quality high-strength carbon steel, which due to its chemical composition and heat treatment has the necessary set of mechanical characteristics. This allows you to easily get hardware from the material with improper installation. To increase the anti-corrosion properties, the screws are treated with a special composition based on nickel, zinc, brass.

Furniture screw has advantages and disadvantages. Positive characteristics include:

• reliable and stable fixation;
• the easiest installation;
• ability to withstand large fracture loads;
• the ability to connect structural elements one after another;
• tight constriction of furniture parts;
• does not require special skills, complex assistive devices.

In addition to the advantages, it is necessary to identify the disadvantages of furniture screws:

• the need for masking products by means of a plastic plug in the color of the material;
• the elements connected with the help of hardware cannot be disassembled, since the structure will not withstand repeated assembly.

A furniture screw is responsible for fastening the parts of the furniture body to each other, fastening shelves, connecting sections. It depends on the reliability of the connection, safety, the ability to easily disassemble and assemble furniture without compromising it if it is necessary to move.

Varieties

The more popular and popular samples used in the manufacture, assembly, installation of furniture items include:

• universal screw;
• confirmation.

Also in the furniture industry, a number of characteristic screws are used, having blunt ends, large threads adapted for chipboard, specific heads. One of such products is a galvanized steel screw, which allows you to attach chipboard sheets at an angle of 90 degrees.

Universal screw

Confirmate

Universal screw

The product is presented in the form of a rod in the form of a cylinder having various types of heads and external threads. Its main task is to fasten individual assembly elements inside furniture structures. The top of this screw can have a different shape:

• countersunk head of the product that, after twisting, is completely buried and does not protrude above the fastened materials, its scope is the installation of shelves, handles, hinges, guide rails for drawers;
• half-secret head due to a smooth transition from the rod to the thread at the time of twisting goes into the material, as well as the counterpart;
• a semicircular head, a horizontal plane and an inner base of the surface of the semicircular cap which during installation additionally creates pressure on the material to be bonded, increasing the strength of the structural unit, thereby eliminating its deformation.

The presence of a special thread makes it possible to easily fix a screw even in the hardest types of wood. Slots of hardware can be simple and cross-shaped. Products with a cross-shaped slot have a number of irrefutable advantages:

• a screwdriver or drill is instantly fixed in the head;
• only one screwdriver will come in handy;
• the installation process in hard to reach places is carried out without much effort.

When using universal screws, it is necessary to arm yourself with a screwdriver, screwdrivers with interchangeable nozzles. For a quality connection of materials, in the process of screwing in the screws, drill holes with a diameter of 70% of the thickness of the hardware, and also select the correct drill.

Confirmate

These products have another name - Euro-screws, which in modern furniture production are considered a more popular type of fixing and fixing devices, as they are among the most reliable, inexpensive furniture connections. Such products are resistant to mechanical stress, as well as fracture.

Confirmate is used to connect structures from materials such as wood, chipboard, multilayer plywood, chipboard. In many cases, screws with sizes of 5x50 mm and 7x50 mm are used. In addition to fastening parts, Euro screws replace the usual corner, performing a housing-forming function, while withstanding all the bending loads. To make cabinet furniture look aesthetically pleasing, the confirmations are complemented by plugs made of plastic. They mask a noticeable part of the hat to the color of the furniture.

Distinctive features of these fasteners are large thread, blunt tip, cylindrical head, slot in the form of a hexagon. When assembling structures, furniture screws for a hexagon do not require special skills, specialized equipment.

A screw coupler is made using a hexagonal bit, a screwdriver, a special key, and a drill. Do not use products made with a Phillips screwdriver. This technology will not allow tightly tighten the connecting elements. As a result, the design will loose.

Shape and size

Furniture screw is the most popular method of fastening in the manufacture, assembly of furniture.There are many sizes and shapes of hardware, designed to carry out any technological operations associated with the manufacture of furniture products.

The length and diameter of such hardware are determined in millimeters or by number. The ratio of diameter to length varies for each standard, but these differences are not of great practical importance. The number is determined by a number from 1 to 20, the larger the number, the thicker the product. Diameters with the number 2,3,4,6 are widely used.

GOST regulates the parameters of the product, but the products can have atypical sizes and can be produced, for example, under special orders. The table of the nomenclature of universal screws in millimeters.

The most common size for furniture - 3 x16 mm; 3.5 x16 mm; 4.0 x16 mm. The parameters of universal screws are regulated by the following types of GOST.

Confirmates for furniture have three main diameters, of which a diameter of 7.0 is most often used. The table of the nomenclature of euro screws in millimeters.

Table of standard sizes of confirm in millimeters.

Screw parameters are individual for each type. The main determining indicators are their length and thickness. Length is the gap between the end and the plane under the hat. This indicator is in the range of 6 - 150 mm. The thickness is equal to the diameter of the thread on the outer part of the hardware, and its size ranges from 3.5 to 6 mm. The mass of a single hardware depends on its parameters and can be in the range of 0.3 - 16.6 g, and the weight of a package containing a thousand pieces will be from 0.26 to 20 kg.

Dimensions

Thread

The form

How to choose the right

For the correct selection of a furniture screw, it should be borne in mind in what material it will be installed. The choice of head will depend on the applied force and space, which will be available when tightening. It is also important to choose not only the type of head, but also the pattern for the tool used.

With the proper selection of bits, a strong adhesion of the fastener to the screwing tool is ensured. Only in this case the screws smoothly, evenly enter the wooden boards, drywall, chipboard, MDF.

Some important nuances that will help buyers of fasteners to better navigate their diversity, as well as make the right choice:

• color - screws of one batch should be kept in the same color scheme. This indicates that all products underwent the same processing under similar conditions, and also have the corresponding strength, corrosion resistance;
• parameter - the dimensions of one batch of products should not visually differ from each other, and also comply with standards;
• step - the load between the threads should be distributed evenly;
• the hole - the slot must be characterized by clarity, symmetry, be deep enough;
• marking - the standard designation of screws is a number in which the first number is the size of the diameter of the thread, the second is the length of the product from its very head to a sharp tip.

If furniture screws meet the specified criteria, you can be sure of the quality of furniture fasteners that will not break during installation.

In order to qualitatively assemble and install furniture elements, you need to use such a convenient, affordable assistant in fixing works as a screw. This type of furniture screed allows not only to simplify the assembly and installation process, but will also be invisible after the installation process, due to its unique structure. All designs and bases fixed by such fasteners will retain their shape, appearance, properties for a long time.

Video