Self-tapping screw with a press-cup is a screw that looks like a small squeezed washer from above. It is used in many spheres of industry and construction. And some say that this invention has no analogues on the advantages. What is the difference between a screwdriver and a presshead? Let's figure it out.
Varieties
To date, there are two main types of such tools:
- Sharp devices.
- With a drill.
To find out the features of each of them, let's look at both types separately.
Sharp self-tapping screws with a press
The main material from which they are made is high-strength. Moreover, a small layer of zinc is applied to this tool from above, while protecting it from rust and other negative environmental influences. Thus, this self-tapping screw with a press-tube is very hardy, reliable and resistant in terms of corrosion. The head (that is, the cap) of this tool has a hemispherical shape, under which is a welded press-washer. Spitz in this samoreza most often cross-shaped. 
Where is the self-tapping hemisphere "presshead" used? The main area of its application is the installation of wooden structures and work with various wood materials. Thanks to the presence of the press-neck, the device perfectly presses the sheet material to the surface to be treated, thereby providing a reliable and high-quality connection. As a result - a strong and sturdy construction. And even from an aesthetic point of view it looks very attractive. That is why a sharp screw with a press-washer is the leader among its "colleagues".
Devices with a drill
They are produced, as a rule, from higher-quality steel and also covered with a thin layer of zinc. The head of this device has a hemispherical shape, and the press was placed on the back side of it. And if the design of this tool can have some similarities with the first, then with the field of application quite the opposite. The main feature, which distinguishes this self-tapping screw with a press-tube from the others, is the possibility of working exclusively with a metal surface. The tip of the device, which resembles the shape of a drill, quickly makes a hole in the steel sheet, and the thread goes further into this material. Thus, self-tapping screws for metal with a press-neck not only provide a high-quality connection, but also significantly reduce the time required to perform a particular job. In this case, it is not absolutely necessary to use a drill: if the width of the hole is less than 2 millimeters, the self-tapping screw may well handle this work. Well and if in a metal sheet already there is a preliminary aperture, the self-cut independently will cope with a necessary task without the help of any other devices. 
Price
Like all other tools of this type, these devices are purchased, as a rule, in bulk. Approximate price for 1 kilogram of these screws is from 100 to 150 rubles.
A wide application of these screws is found in the case of fastening metal sheet elements of structures, tin profiles, plastic sheets and other similar panels to the structures: 1. Of metal profile, thickness up to 0.9 mm. 2. Materials made of wood or plastic. The hat of the self-tapping screw has a hemispherical shape, reinforced with a slotted cross-type cross type Phillips # 2. They have a frequent single-threaded thread, a sharp tip. Protective zinc coating.
Self-tapping screws with a press washer
We recommend that you use a tool equipped with a high-quality cruciform attachment RN-2 for mounting. Tighten the screw at a right angle. Self-tapping prevents deformation of the sheet at the fastening point, pressing it to the base, reducing pressure on the surface.
Self-tapping screws with a press-tip sharp tip - characteristics
Delivery
Delivery in Moscow FREE OF CHARGE at the sum of the order from 15 000 rubles. Otherwise, the cost of delivery depends on the distance from the warehouse and is consistent with the manager individually.
Delivery in the Moscow region is at a price of 15 rubles per km
We try to deliver goods to our customers as soon as possible. In most cases, the delivery of fasteners takes from 3 to 24 hours.
Self-tapping screws with a press cup sharp
Self-tapping screws with a press cylinder are sharp made of steel. After manufacturing, a thin layer of zinc is applied to the screws. It protects the screws against corrosion, thus prolonging their service life. The head of self-tapping screws is hemispherical with a press-press. The head has a cross-shaped slot. The sharp tip of the screws is designed for mounting in the base of wood. The presence of the presshead provides the maximum pressure of the sheet material during installation.Self-tapping screws with a press cup with a drill
For the manufacture of self-tapping screws with a press and a drill, steel is used. In addition, the screws are covered with a thin layer of zinc. Zinc coating is an effective protection of screws against corrosion. The tip of the screws with a drill, which allows you to mount in a metal base. The head is hemispherical with a press washer. The head has a cross-shaped slot.
|
Mounting features: Self-tapping screws with a press-cup with a drill are used to fix sheet material, such as hardboard, plywood, etc. to metal structures. The presence of a drill bit at the end of the self-tapping screws allows mounting without pre-drilling. Pressing the cushion allows you to effectively press the sheet material to the metal base. Mounting is carried out with a screwdriver or a special drill bit. |
Sharp screws with a press-tube are made of alloy steel. Their surface is galvanized, often with white passaging. This provides anti-corrosion protection fasteners , their durability and decorative appearance.
Distinctive features of sharp self-tapping screws with a press-head
From other hardware of this group, such fasteners are characterized by the following design features:
- Pointed tip. It allows you to screw sharp galvanized self-tapping screws with a press cup without preliminary perforation of holes in the materials to be joined;
- Presence of a presshead on the head. It ensures maximum tightness of sheet materials during connection. This allows achieving high strength and reliability of fixation.
Sphere of application of sharp self-tapping screws with a press-head
The most frequently used self-tapping screws with a press-forging on wood. This can be a variety of wooden elements, plywood, MDF, etc. The presence of a presshead allows to prevent the punching of such materials without compromising the reliability of the connections. For metal surfaces are used self-tapping screws with a press cup with a drill.
Also, you can buy sharp screws with a press cup for bonding hardboard, thin steel, or other sheet materials (including plastic sheathing) up to 1 cm thick. Often, similar hardware is used to organize combined attachments (for example, when attaching thin metal elements to a wooden frame).
The main advantages of using sharp self-tapping screws with a press-head
Ease of installation.
Using sharp wood screws, you do not have to pre-make holes in the material. All you need is a tool designed for a Philips type 2 head.
High speed of work execution.
It is provided by eliminating an additional stage (drilling holes). To maximize the speed of installation work, it is recommended to use electric tools (for example, screwdrivers).
A wide range of.
On sale there are sharp self-tapping bug (up to 1.1 cm in length) and larger hardware with a press tube, which allows you to choose fasteners for a certain thickness of the materials to be joined.
The price of sharp self-tapping screws with a press-tube is directly dependent on the materials of their manufacture (steel grade, type of protective coating) and dimensions. The company-manufacturer also matters. To save money, you can buy hardware in large batches (in packages of several hundred pieces).
We already mentioned in passing about self-tapping screws whose head resembles a squeezed washer, in an article about galvanized self-tapping screws. Today I would like to write separately about this invention. It's not for nothing that many people familiar with the construction say that this invention has no analogues. Let's consider what are self-tapping screws with press cup, we will get acquainted with the spheres of their application and technical features.
VARIATIONS
There are two types: sharp and with a drill. Each species is designed for different materials and purposes. Let's look at each of them in more detail.
ACUTE SELF-CUTTING WITH PRESSAGE
Are made of steel. Next comes the application of a thin layer of zinc, which perfectly protects the metal from corrosion and generally makes the self-tapping screws more durable. The head of the samorez is made in the form of a hemisphere, under which is located presshead. Spitz, as a rule, is cruciform.
Scope of use: sharp self-tapping screws with press cup are best suited for mounting in wooden surfaces. This is facilitated by the technical features of the self-tapping screw. Thanks to the press cradle, the fixed sheet material perfectly presses against the wooden surface and provides an excellent result.
| Name | Tip | Weight: 1000 pcs. | Quantity in 1 kg | Prom-packing | Diameter of goal |
| Self-tapping screw with presshead 4,2x13 | acute | 1.4 kg | 600 pcs. | 10000 | 12 mm |
| Self-tapping screw with presshead 4,2х14 | acute | 1.52 kg | 572 pieces | 10000 | 12 mm |
| Self-tapping screw with presshead 4,2x16 | acute | 1.6 kg | 554 pcs. | 12000 | 12 mm |
| Self-tapping screw with presshead 4,2x19 | acute | 1.84 kg | 491 pcs. | 10000 | 12 mm |
| Self-tapping screw with presshead 4,2x25 | acute | 2.23 kg | 405 pcs. | 8000 | 12 mm |
| Self-tapping screw with presshead 4,2x32 | acute | 2.65 kg | 346 pcs. | 6000 | 12 mm |
| Self-tapping screw with presshead 4,2x41 | acute | 3.25 kg | 300 pcs. | 4000 | 12 mm |
| Self-tapping screw with presshead 4,2x51 | acute | 4.22 kg | 272 pieces | 3500 | 12 mm |
| Self-tapping screw with presshead 4,2x76 | acute | 5.16 kg | 254 pcs. | 2000 | 12 mm |
SELF-DRAWS WITH BRAKE WITH DRILL
The material of manufacture, as in the previous version, is high-quality steel. Self-tapping screws with a drill also covered with a thin layer of zinc to protect the metal from corrosion and to extend the overall service life of the product. The head of the samorez is also hemispherical, on the rear side of which there is a press-cup. Spitz, as in the previous version cruciform.
Sphere of use: here again the main difference of these self-tapping screws. A variety with a drill is designed exclusively for working with metal surfaces. The drill head structure gives this self-tapping an easy entry into the metal base and a stronger fixation in it. To work with metal, purchase only self-tapping screws with a drill bit.
| Name | Tip | Weight: 1000 pcs. | Quantity in 1 kg | Prom-packing | Diameter Goal |
| Self-tapping screw with presshead 4,2x13 | drill | 1.44 kg | 600 pcs. | 10000 | 12 mm |
| Self-tapping screw with presshead 4,2х14 | drill | 1.52 kg | 565 pcs. | 10000 | 12 mm |
| Self-tapping screw with presshead 4,2x16 | drill | 1.6 kg | 554 pcs. | 12000 | 12 mm |
| Self-tapping screw with presshead 4,2x19 | drill | 1.84 kg | 460 pcs. | 10000 | 12 mm |
| Self-tapping screw with presshead 4,2x25 | drill | 2.23 kg | 374 pcs. | 8000 | 12 mm |
| Self-tapping screw with presshead 4,2x32 | drill | 2.65 kg | 340 pcs. | 6000 | 12 mm |
| Self-tapping screw with presshead 4,2x41 | drill | 3.25 kg | 280 pcs. | 4000 | 12 mm |
| Self-tapping screw with presshead 4,2x51 | drill | 4.22 kg | 261 pcs. | 3500 | 12 mm |
| Self-tapping screw with presshead 4,2x76 | drill | 5.16 kg | 230 pcs. | 2000 | 12 mm |
FEATURES OF INSTALLATION OF METAL SHEETS
Self-tapping screw with press-head Different types have different thickness of punching metal sheets. For example, a sharp type of acrylic can easily be mounted in 1 mm thick metal. But not more. For samorezov with a drill this figure is 2 mm. The data are given taking into account the fact that the preliminary holes were not made in the metal. If you do the moves for self-tapping in advance, then of course you can mount in metal sheets of any thickness.
CONCLUSION
During its many years of existence, self-tapping screws have already proved their usefulness. Their capabilities and spheres of use are huge, and the results are reliable. This is proved by hundreds of experiments conducted by different people. Choosing a screwdriver with a presshead, you will not be mistaken in your choice.