Without reliable fasteners, it is impossible to build a house or renovate an apartment yourself, or with help. You won't be able to fasten rafter leg with a beam, you won't be able to hang a shelf, you'll never assemble furniture. Here is an incomplete list of what you cannot do without having a nail, screw, self-tapping screw or bolt at hand. Many will say, what will this article be about if you just listed all the popular fasteners. In principle, all that remains is to add anchors, rivets, dowels, confirmations and screws. That's all, in fact, these are just names of hardware, and fasteners have a slightly different classification.

Most likely, this concept was invented artificially in order to combine all the details that can be used to connect different building elements And .

This group of fasteners includes screws, self-tapping screws, nails, dowels, etc. There are also types of construction fasteners, namely dowels, anchors, metric products and self-tapping screws.

A separate group includes fasteners made of of stainless steel. As a rule, it is manufactured according to the DIN standard (Germany). Such fasteners have an almost unlimited service life, since they are not exposed to precipitation and are quite resistant to chemical reagents. Moreover, the aesthetic appearance of this fastener will not be spoiled.

If there is a need for reliable fastening anything, then anchors will come to the rescue. An anchor is special kind fastener consisting of two parts, a pin or core and a sleeve. The use of anchor fasteners is not regulated, but, as a rule, builders use anchors for greater reliability of fastening. So, if you need to secure a heavy element to a hollow base or concrete, then an anchor is perhaps the only way to do this. You can often see the use of anchors when PVC installation windows Depending on the problem that needs to be solved with the help of an anchor, the necessary or most suitable anchor is selected - a frame anchor, an anchor with a hook, a driven anchor, an anchor with a ring and an anchor bolt.

There are also dowels that have the same purpose as an anchor, but are used for lighter loads.

Chemical anchors stand in a separate group - these are devices that are structurally different from the classic anchor. A chemical anchor is more of a method of attaching a pin to a base. As a rule, such anchors are used when maximum loads, which ordinary anchors cannot withstand. To secure the anchor, a hole of the required diameter and depth is made. The dimensions of the holes are strictly regulated by the manufacturer of the chemical anchor. Then, using a special gun, a certain amount of chemical glue is placed into the hole, then the anchor itself is inserted into the hole filled with glue. As a result chemical reaction glue with the base and body of the anchor, mutual penetration of one into the other occurs. The end result is a permanent connection that can withstand enormous shear, torsion and bending loads.

High strength fasteners

By by and large anchor fasteners can be classified in this group. However, it all depends on the grade of steel used and production technology. Required mechanical properties of high-strength fasteners class 8.8. 10.9 and 12.9 is achieved by sequential heat treatment, a combination of heating and cooling (quenching and tempering). Also, high-strength fasteners have greater resistance to precipitation, chemical exposure compared to usual.

Inch fasteners

In English-speaking countries - Great Britain, Australia, and the USA - inch fasteners with threads of various pitches (large - UNC and small UNF) are widely used. The only difference between this fastener and the metric one is that the unit of measurement is inch, not mm. Those. We receive fasteners that meet the standards of the countries listed above.

Almost all of its types listed above can be safely classified as furniture fasteners. There are also nails, bolts, and screws. Only screeds are specifically used. This compound is not used anywhere else except in furniture production.

Welded fasteners

This type of fastener is used for various technologies welding Structurally, nails, bolts, bushings, and threaded rods are used for welding.

Brass fasteners

The main advantage of this fastener is its low cost compared to stainless steel fasteners. At the same time, the products withstand aggressive influences much better external environment. In addition, like stainless steel fasteners, brass has the same decorative qualities. It is also worth noting the absence of magnetization, as a consequence, the absence of interference when used in electronic devices.

A special group stands out for rigging fasteners. This is a fastener that is used for rigging and lifting operations. These are staples, thimbles, lanyards, belts.

Requirements for construction fasteners.

1. Securely fasten structures.

2. Have a convenient and easy way to use.

3. Fasteners must be maximally protected from aggressive environmental influences and have excellent decorative properties where required.

Types of metric fasteners used in construction and repair
Vibrating slats: types and purpose

Special purpose fasteners are used to connect various designs, as well as in complex mechanisms where standard fastening elements are not suitable. They are made from high quality solid steel that can withstand high mechanical loads. Special fasteners, like regular fasteners, have threads made in metric or inch format.

What kind of special fasteners are there?

In fact, there are not so many special fastening elements. All available products can be divided into two categories - rigid fixation and rigging.

Rigid fixation elements are used to connect stationary products, and rigging elements are used to secure cables or ropes. Special fasteners are presented on the market in a wide range of different variations that have the simplest design, but differs in dimensions and other essential characteristics, which allows you to group them into categories.

Rigid fixation fastener

Rigid fixation fasteners include only three categories of products:

• Hairpins.
• Fitting.
• Lugs.

Hairpin

A hairpin is a metal rod with a thread. Such fasteners happen various sizes and is made from metals with wide range hardness, therefore differs in physical and mechanical properties. Large studs are used for foundation works. With their help it is attached metal carcass to concrete, and also the stands of advertising billboards are fixed to the blocks. There are only two main categories of studs:

• With double-sided thread.
• Full threaded.

Double sided The studs have a clean area in the center without threads. There is a right-hand thread on one end of the stud, and a left-hand thread on the other. This design is often used to mount the cylinder head in a car. Part of the fastener is screwed into aluminum block engine, and a head is threaded onto the free end, which is clamped with nuts.

Full threaded The studs have one type of thread that runs from edge to edge. You can screw a nut onto them and scroll along the entire length. Classic threaded clamps work on this principle. Such studs are widely used in construction to create various structures. In particular, they are used for installing sandwich panels, etc.

Union

A fitting is a common special fastener that is used to connect pipes to pipes or hoses. The main condition is the presence of threads on at least one element. They are usually used in water and gas pipelines. Also, household appliances that use water or gas are connected using fittings. There are fittings on washing machines and dishwashers, gas stoves, boilers, etc.

There are four categories of fittings:

• Connecting.
• Welded.
• Rotary.
• Transitional.

Connective The fitting is a metal tube of various lengths, on both ends of which an external thread is knurled. The fitting is inserted between two pipes with prepared internal thread and screws onto them. Since the threads are opposite, when the fitting is turned it enters both ends of the pipes simultaneously. In its center there is a groove under wrench. There are also fittings with internal threads, which, on the contrary, are screwed onto the tubes.

Welded The fitting is a metal tube, on outside one of the ends of which is threaded. The clean edge is welded to the pipe, which has no threads, using electric welding. Another threaded pipe is screwed onto the second end of the fastener. Using such an element allows you to make a water or gas branch, or simply extend the pipe. Often such fasteners are not metric, but inch thread, which is used in engineering systems.

Turning the fitting has a movable design that allows the flange intended for mounting the hose to rotate. The use of such fasteners is very convenient in cases where it is not desirable to allow the hose to be screwed in when twisting the fitting.

Transitional The fitting is almost the same special fastener as the connecting one, but with a slight difference. Its ends have different diameter. This makes it possible to connect pipes of different thicknesses.

Lugs

The boss is a similar design to the connecting fitting, but still has some differences. It is a tall nut that is screwed onto a tube - for example, to connect measuring equipment such as a pressure gauge. There is a hexagonal groove along the entire surface of the boss to allow tightening with a wrench. The connection thread is located inside the tube. The diameter of the outlet holes on different sides of the fastener may vary. The thread for connecting to the pipe is often made in inch format, and for the pressure gauge in metric. The bosses are made of stainless steel or copper alloys.

Rigging fasteners

Special rigging fasteners are more diverse than classic ones:

• Brace.
• Lanyards.
• Carbines.
• Hooks.
• Clamps.
• Koushi.
• Blocks.
• Swivels.
• Eye nuts and bolts.

Bracket It is a curved rod, the edges of which are connected with a pin or a transverse bolt and nut. This is a very common fastener that allows you to reliably connect the cable to various supports. It is made of solid steel and coated with a layer of zinc. There are both small staples and quite large ones.

Lanyard is a screw tie that allows you to create a strong tension with minimal effort when rotating. This element is a frame or ring into the body of which metal rods are screwed. One of them ends with a hook, and the second with a ring. When the frame rotates, the rods are screwed inward, which creates tension. This is a reusable system that can work just as well as a hydraulic jack, but for pulling, not lifting.

Carbine is an element for quickly connecting chains and cables. It is a metal rod bent and connected at its ends, at one end of which there is a special spring mechanism that holds a removable segment. By moving the segment aside, you can insert a cable ring or chain link inside the carabiner.

Hook It is a metal rod, one end of which has a thread, and the other is unscrewed into a semi-ring. He screws himself in various materials, such as wood or dowel, and holds suspended elements. There are also designs in which a ring is used instead of a hook. Such special fasteners must be used with caution, since the hook can bend under the influence of heavy weight.

Rope clamp It is a metal plate into which a rod bent in the form of a bracket is inserted. Nuts are screwed on its ends. The clamp allows you to create a reliable cable loop that will not break. It is enough to insert the doubled cable into the holes of the clamp and tighten the bolts.

Koushi They are an insert made of a metal rod bent in the shape of a triangle or drop. They are used to increase the bend radius when creating cable knots. Thimbles are an alternative to clamps in creating loops. They are cheaper and, when knotted correctly, provide a stronger connection. Their only drawback is that you need to use quite a lot of cable to prepare the knot. Often thimbles are used in conjunction with clamps when guaranteed strength is needed.

Block is a special fastener that is used for lifting operations. Its design includes a pulley into which a cable or rope can be inserted. By obtaining an axis of rotation, it is easier to apply effort to lift weights.

Depending on the design, the block can be solid or folding. If it is solid, then to carry out the work it is necessary to first insert the end of the cable like a thread into the eye of a needle. IN folding design everything is much simpler. On its side there is a special segment that can be moved aside to wind a rope or cable without having to look for the end, which is especially convenient if a long coil is used.

Swivel It is a steel ring with a metal rod inserted into its side hole, with a small ring at the end. Using a swivel helps prevent the cable or rope from twisting. The fastener allows you to extend the service life of the used coil and dampen swaying. When the cable is unscrewed, the swivel simply turns, thereby compensating for such actions and preventing it from breaking. Similar to a rigging swivel, but in miniature, you can find it on dog walking leashes and bags. The swivel is also used in fishing gear.

Eye bolts and eye nuts They are a bolt or nut to which a ring is welded. This design has much in common with a rigging hook, but is more reliable. All its elements are firmly welded together. This eliminates bend straightening, which is common problem hook Eye nuts and bolts come in a variety of sizes. They are always made only from steel.

When carrying out construction, repair and other work, in mechanical engineering..., in almost any production it is impossible, or extremely difficult, to do without the use of various types of fasteners. Metal fasteners- This is a guarantee of reliable connection of individual parts to each other. The most common and popular fasteners are rightfully considered hardware - metal products.

Classification of fasteners

1. Anchor fasteners— technically complex steel products bearing high loads (up to 5 tons).

2. Screws and self-tapping screws are the most commonly used and easiest to use type of fastener. It has a very wide distribution and application.

3. Metric fasteners - the most reliable and common type (nuts, bolts, washers, etc.)

4. Dowels - mainly products made of propylene or nylon. Used in conjunction with screws or self-tapping screws.

5. Nails - made of metal for fastening parts to wooden bases.

6. Tapes perforated with holes - made from sheet steel (corners, punched tape...). Often used in the construction of wooden houses.

7. Rigging fasteners - used for fastening and moving various loads (cables, chains, carabiners...).

Anchor fasteners

There are several types of anchors:

• drive-in anchor - metal sleeve. One side is threaded, the other side is cut. There is a wedge inside, which, when driven (mainly into concrete), securely holds the structure being mounted;
• wedge - also used in concrete and natural stones. It is hammered in and additionally tightened with a wrench;
• expansion - a special expansion mechanism opens inside the base;
• chemical anchor - a pre-prepared hole is filled chemical composition and the fastening rod is inserted.

Electrical Installation Fasteners

Some types:

• dowel-bracket for round and flat wires;
• cable tie;
• universal wire clamp;
• fastening flat and round wires;
• clamps;
• fastenings for corrugated pipes, PVC and cables.

Self-tapping screws

Divided by type of head:

• hexagonal;
• semi-cylindrical;
• secret;
• hemispherical;
• with a cross-shaped slot.

The types of tips differ:

• with a sharp end;
• in the form of a drill.

Depending on the application they are divided into:

• for connection wooden parts;
• for connecting metal parts;
• roofing

Protection of fasteners by galvanic coating

Serves to increase service life. Anti-corrosion coating can be:

• copper;
• tin;
• zinc;
• nickel;
• cadmium

The Magkrep online store offers to buy fasteners at low prices with wholesale and retail delivery. We have a large range of construction and industrial hardware.

Our catalog includes fasteners:

• anchor;
• dowel;
• blind rivets;
• for ventilation, electrical, plumbing;
• brackets and fastenings for floors;
• hooks;
• furniture;
• metric;
• stainless;
• non-perforated;
• self-tapping screws and self-tapping screws;
• special;
• clamps for fittings.

Construction fasteners

• steel washers, pins, rivets and cotter pins for mounting structures made of plasterboard, foam and aerated concrete, plastic;
• self-tapping screws - products with a countersunk head, intended for a base made of wood, plasterboard, metal;
• screws – universal fasteners, available in various modifications;
• anchors are designed for fastening into various foundations in order to hold any, including heavy, structure. Anchors differ in base material (solid, hollow or sheet), installation method and type of fastening.
• A dowel with an outer shell made of metal, plastic, nylon or polyethylene is designed to fill holes in a porous base for screws and self-tapping screws.

Metal fasteners for wooden structures

This type of fastener is used everywhere - in industry, including furniture, in construction, and in households:

• Nails. This is the oldest fastening material that has not lost its relevance to this day. Nails are used in many areas of industrial activity. They come in the most common steel and high-strength types so that they can easily fit into a brick or even concrete wall. For fastening to a hard surface, special plaster and roofing felt nails are used.
• Self-tapping screws for wood have a larger thread pitch than hardware for metal.
• Furniture fasteners are various screws with a press washer, a flat head, confirmat, furniture nuts, euroscrews, canopies, supports, secret hinges, shelf holders, corners, fittings, eccentrics with a rod, made of stainless steel.
• Fasteners for the manufacture of formwork are a set consisting of a clamping screw with a nut and a pipe with clamps.

The online store catalog contains hardware ready to be shipped from the warehouse. Sales are carried out to any region of Russia. To buy fasteners, select its product item in the catalogue, decide on the quantity and place the order in the “basket”. If you have any questions, contact a consultant online or request a call back. The order can be picked up in Moscow or Yaroslavl. Delivery to regions of the Russian Federation is provided by transport company.

Your questions

Question: How to hammer a nail?

Answer: For simple work, ordinary construction nails are quite suitable, the length of which will be approximately equal to 2/3 of the total width of the fragments being punched. The nail should be driven into a thin piece of wood at a sufficient distance from the edge so that the wood does not split. If you need to carry out work precisely at the edge of the surface, you must first drill small holes at the joints. It is worth noting that if you hammer the nail at an angle, this will increase the strength of the fastening.

Question: Which dowels are best for drywall?

Answer: DRIVA dowels allow you to install fasteners in drywall the fastest, and do not require preliminary drilling. The MOLLY dowel will allow for the most powerful fastening, but will require drilling.

Fasteners, otherwise called hardware, are one of the most widely used parts. Everyone knows what fasteners are and for what purposes they are used.

Their significance when carrying out construction work and in the economy it is difficult to overestimate. The term "hardware" arose from the abbreviation of the phrase "metal products."

There are two types of fasteners: detachable and permanent. The fastener industry is constantly growing, and the variety of fasteners used is very wide. The reason is that these parts are an indispensable attribute of any development in the field of mechanical engineering. The standard for fasteners is regulated in the GOST document “Fasteners. Terms and Definitions. GOST 27017-86”.

Let's take a closer look at what types of fasteners there are.

Anchor

An anchor is a fastener designed to connect structures and products. It is also customary to call a part that is partially concreted into any structure.

Types of anchors:

• ceiling;
• driving;
• wedge;
• frame;
• with a half ring;
• with ring;
• with nut.

What unites these parts is the function they perform - fasteners. Thus, a drive-in anchor with an internal thread and a cone-shaped wedge is needed to secure materials and equipment to brick or concrete. Installing such an anchor is simple: it is installed in a hole that has already been drilled earlier. The radius and depth of such a hole are selected based on the size of the anchor.

The wedge anchor is used for quick fastening in concrete, a common material for structures such as planks, profiles, dropped ceilings. This type of anchor is often used to secure heavy equipment in solid bases. To install a wedge anchor, a hole is drilled in the concrete, into which the anchor is driven with a hammer, after which it is tightened with a nut. Ceiling anchors made of galvanized steel fix metal profiles, facades, railings, gratings on a concrete or stone base without cracks.

The frame anchor is designed for fastening frames and door frames from wood and metal to a brick or concrete base.

Bolt

Bolts are cylindrical metal fasteners with a metric external thread and a head at one end, usually designed for nuts. The bolt head can be hexagonal, cylinder or spherical. Bolts allow you to create a connection using a nut or a pre-made threaded hole in the part to be connected.

A stepped bolt differs in that the diameter of its thread is smaller than the diameter of the smooth part. A foundation bolt has a specially shaped head that helps secure equipment directly to the foundation.

The most widespread I received a bolt with a hex head for a wrench. Bolt sizes may vary.

This fastener, like a bolt, is usually inserted into a pre-made through hole of the parts to be fastened, then a nut is screwed onto the thread, and the parts are tightened with a wrench. The friction force allows the connection to be secured. To transfer part of the load to the bolt, maximum precision in manufacturing the rod and the hole for it in the parts is required. To prevent parts from becoming deformed, washers are placed under the bolt head and nut. Bolt sizes allow you to find the right fastener for any task.

Nail

The material for making ordinary nails is steel and steel wire. The marking of nails includes two numbers: the first is the diameter of the rod, the second is the length of the rod in millimeters. The head of the nail can be either smooth or grooved. Screw, club and corrugated nails are distinguished by the presence of helical, longitudinal and transverse grooves, burrs or dents on the rod. Such nails have greater resistance to pulling out.

Hardened steel nails can be driven into brick and concrete walls. True, when working with them, it is necessary to take into account their increased fragility. For fastening to rigid bases, roofing felt, wallpaper, and plaster nails are used. They are available with a flat head, wider than conventional nails, and a shorter shank. IN aggressive environments Copper nails can be used, which are almost not subject to corrosion, as well as galvanized or alloy steel.

The operation of hammering nails has its own specifics. In order for the nail to be driven in efficiently, you need to follow a number of requirements.

To prevent dents from appearing on the parts during nailing, you need to use a countersink. In order for the fastening to be strong, the nail shaft must enter 2/3 of the length into the lower part being fastened. When driving small nails, it is best to use auxiliary tools. To make the joints of the parts being connected stronger, it is better to drive the nail at an angle. When using thick nails, to avoid splitting the board, you need to slightly blunt their sharp ends. If you plan to hang any weight on a nail being driven into the wall, it should be driven not perpendicular to the wall, but at an angle from top to bottom.

A nail that has penetrated through must be carefully bent using a triangular file. In order not to damage the surface of the parts when pulling out nails using pliers, you need to use a plate that is placed under the pliers, reducing the pressure on the part. If you plan to dismantle parts in the future, it is preferable to use screws rather than nails.

In some cases, liquid nails are used to fasten products. They are made from polymer materials and rubber. Liquid nails can provide sufficient fastener strength no worse than metal nails. One drop of nails of this type can withstand a force of 50 kg. But their main advantage is maintaining integrity decorative surface. Application area liquid nails very wide. They are used for gluing to a variety of wall and ceiling panels, plasterboard, chipboard, fiberboard, wood, cardboard, ceramics, stucco decorations, glass, metal and many other materials.

When purchasing liquid nails you need to be careful. Various brands This material has a certain degree of adhesion.

It is advisable to use liquid nails:

• at high humidity premises;
• for temperatures not lower than -10 0 C.

For example, neutral nails are harmless because they are based on a water solution. However, they cannot be used to glue metal. They don't like either subzero temperatures. Nails made with organic solvents have increased setting speed and can withstand temperatures down to -20°C. Their disadvantage is the presence of volatile harmful substances. Within 5 days after use they emit bad smell. Liquid nails set in 15 to 30 minutes, depending on the brand. However, they completely polymerize only after a day.

Screws

In order for screws to fully perform their function as reliable fasteners, it is necessary to choose their size and type correctly. So, screws are fasteners for wooden structures. Their rod tapers towards the end and performs the function of a drill. This type of fastener cannot be driven in like nails - they are screwed in completely. Before using small screws, a puncture is first made using an awl. Large screws will be easier to screw if you first drill a hole of a slightly smaller diameter.

Screws are used to connect metal structures. The screw head helps to press the parts being connected, and its shape is chosen so that the screw can be easily tightened using a wrench or screwdriver. Screw heads can be hexagonal, semicircular or countersunk. The flat end of the screw has a chamfer to prevent thread entry.

A screw is a fastener that is screwed into a threaded hole. In some cases, a hole is drilled at the end of the screw for the use of a cotter pin - a wire rod with a semicircular cross-section, bent almost in half. The cotter pin serves to prevent spontaneous unscrewing of the fastener.

Often a washer is installed between the part and the nut, internal hole which allows the screw rod to pass into it. If the screw is rusty, a hammer or special crimps are used to remove it. Heating the nut with a gas torch or blowtorch can often help with this. If open fire is prohibited for some reason, you can use a hot iron rod or a large soldering iron.

screw

A nut is a type of fastener with a threaded hole cut inside. The most widely used are galvanized nuts. The shape of the nuts can be hexagonal, round with a notch, square, with protrusions for fingers. The main purpose of a nut is to connect parts using a bolt.

Types of nuts:

• hexagonal;
• square;
• "lamb";
• flanged with a groove for a cotter pin in the shape of a cap;
• T-shaped, with a plastic insert.

It is also worth noting that nuts are also divided by strength class in accordance with the bolts with which it is used.

Dowel

Dowels are used for fastening in solid wall bases. Dowel fastening is based on the principle of friction, which occurs due to the expansion of the fastener during installation, creating a holding force. The dowel is capable of withstanding large static loads. When installing with dowels, the fastener is destroyed during the pulling process. The dowel is made from polymers. Their physical and mechanical properties can vary greatly depending on various factors. These are the characteristics of the filler, the ratio of components, and the parameters of the binder. The disadvantages of polymers include low heat resistance, tendency to deform under load, and aging.

Only screws correctly selected for the dowel can withstand the maximum load. They must have the maximum permissible length and diameter corresponding to the length and thickness of the dowel. When using other fasteners great importance has a thread profile because it determines the expansion effect. The use of self-tapping screws and self-tapping screws for fastening drywall sheets is not recommended.

A number of manufacturers produce dowels that allow the installation of screws with metric threads. The greatest locking is achieved with a dowel in concrete, stone and other solid hard materials. It must be taken into account that the hole for installing the dowel must be drilled in accordance with the recommendations for depth, diameter and distance from the edge. There should be no cracks or chips as a result of drilling the hole. The hole must also be cleared of debris and dust.

Among the offerings of manufacturing companies, you can find varieties of dowels that have an increased length, necessary for soft and hollow materials. When installed in such a base, fastening can be achieved by fixing the internal stop of the parts. For installations occurring in hollow materials, fastening is based on a combination of friction and internal stop. It is necessary to take into account all the factors that determine the reliability of fastening in all their interrelationships.

Rivet

A part such as a combined type blind rivet consists of an aluminum body and a rod made of galvanized steel. This design is the most common. The purpose of the rivet is to connect two or more surfaces of thin sheet. The need for a rivet arises in cases where a permanent connection is required using power tools when access on the closing head side of the rivet is limited or blocked.

There is also a rivet nut - a fastener that is widely used in mechanical engineering and electronics. The rivet nut is designed to create threaded connections in metal and other materials. thin materials high strength. Among the rivets, the most durable are steel rivets. Steel rivets are protected from corrosion by galvanizing.

Threaded rivets differ from conventional blind rivets in that they not only connect sheet materials, but also have an internal screw thread.

Quality threaded rivets are installed in places that are difficult to reach using such simple tool like a riveter.

Since the choice of lengths and diameters of rivets is very wide, the search for the one best suited for the task must be carried out according to the markings on the product.

Self-tapping screw

To fasten thin metal parts to wooden or plastic surfaces, self-tapping screws with fine threads are used. Fastening of insulation, fiberboard, and wooden parts is done with self-tapping screws with large threads. Having a drill-shaped tip, it is capable of independently making holes in parts to be fastened. If a self-tapping screw is screwed into a hole drilled in advance, self-tapping screws with a sharp tip are used. A universal black self-tapping screw is used to fasten plasterboard sheets to tin profiles. Universal self-tapping screw white used for fastening steel, plastic and wooden materials. Self-tapping screws are the most widely used fasteners for wooden structures.

Washer

The washer is made from cold rolled steel strip. It is a round plate with an internal hole and is used to increase strength bolted connections by placing it under the head of a bolt or nut. Thanks to the rivet, the pressing surface of the parts to be fastened increases, which helps protect the joined surfaces from deformation when the nut is tightened.

Hairpin

A stud is a fastener that has the shape of a cylindrical rod with external threads cut either along its entire length or at the ends. This connection is used if none of the materials involved in the connection have threads. The connection is then secured with a nut, sometimes supplemented with a washer. The use of studs as fasteners is harmful appearance products.

Screw

A screw is a fastener in the form of a rod with external thread with a conical tip and a head at the other end. It has the ability to create new thread in products made of plastic or wood. Screws are hardware and fasteners that are most widely used in construction and finishing work. They also cannot be replaced during installation. plasterboard sheets on a frame made of metal or wood.

Apply various types screws also in roofing, facade works for joining metal sheets. The roofing screw has a hexagonal head and is equipped with ordinary and sealing washers, the latter made of weather-resistant rubber. This type of screw is painted and comes in 18 colors, helping to give the building an aesthetically pleasing appearance.

Each type of fastener is produced to perform specific functions. This explains the wide variety that fasteners offer. The price of hardware varies and can range from 2-3 rubles to several thousand rubles per piece, but they are often sold by the kilogram.

Fasteners are intended for specific materials and parts. So, using certain types of fasteners, you can connect metal with drywall, two metal products, or metal with wooden parts.