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In addition to galvanic coatings in accordance with DIN EN 4042 and zinc lamella coatings in accordance with DIN EN ISO 10683, the duplex coatings C 1000, CLIMADUR and EJOGUARD are used for products from EJOT. Thanks to the combination of specially coordinated coatings, the EJOGUARD surface offers excellent corrosion properties.

Depending on national regulations, screws with duplex coatings, such as the EJOGUARD, can also be used. Corrosion in construction – Our knowledge for more safety Corrosion is an important issue, particularly in the construction industry, and can have serious consequences.

The EJOT portfolio includes products for fastening on thin-walled metal profiles (JF3 self-drilling screws of the EJOFAST® family), steel/steel and aluminium/steel connections (JT3/JT6 bimetall self-drilling screws) as well as aluminium/aluminium connections (JT4/JT9 stainless steel self-drilling screws).

The EJOFAST® self-drilling screw JF2-2-4.2 is suitable for the efficient connection of ventilation ducts made of steel.

Established all-rounder in even better quality With the JC2 Plus, the established concrete screw JC2 got an even more powerful successor.

Downloads Press release JC2 Plus [PDF; 76 KB] Picture JC2 Plus [JPG; 239 KB]

Downloads Press release JC2 Plus [PDF; 114 KB] Picture JC2 Plus [JPG; 2.3 MB]

Downloads Press release JC2 Family [PDF; 137 KB] Picture JC2 Family [JPG; 2.9 MB]

Depending on the substructure of the roof, the lower part is either an EJOT self-drilling screw JT3-SB-3-8.0 x L or an EJOT self-tapping screw JA3-8.0 x L or JA3-10.0 x L based on DIN 571.

According to ETA-18/0812, all pressure-resistant insulation materials may be fitted with a T-FAST® JW2-STR or JW2-STS partial threaded screw with a nominal diameter of 6.0 mm and 8.0 mm by screwing through a counter lath (bmin = 50 mm x hmin = 30 mm).

This head style is particularly widespread for drilling and self-tapping screws and is mainly used for fastening sandwich panels in the roof area. As an example, we have the EJOT JT3, JT4 and the JZ5 product series.

You can easily determine the drilling performance of EJOT self-drilling screws yourself by having a look at the screw disignation: For example, an EJOT self-drilling screw JT3-6-5.5 has a maximum drilling performance of 6 mm, a JT3-12-5.5 has a maximum drilling performance of 12 mm.

Much more important, however, is the second point which is especially valid for self-drilling screws for weater-exposed areas (JT3). 2. Hardened drill points: JT3 stainless steel screws feature a drill point made of steel - for strength reasons, therefore they are called "bi-met screws"!

The advantages of the T-FAST® at a glance TX drive for optimum torque transmission Partial thread with end mill at the transition to the non-threaded fastener shaft reduces the installation torque and simplifies the installation process Special tip geometry ensures quick gripping and allows fast processing Specifications T-FAST® JW2-STR countersunk head screw with milling ribs on the underside for simplified lowering of the head for surface fixed installation T-FAST® JW2-STS with wafer head and pressed washer.

The JZ5 is the strongest self-tapping screw of EJOT to date and scores particularly well when used in high-strength materials. The JT3-6-5.5x25 E16 self-drilling screws are made of stainless steel with a hardened steel drill bit and are used to attach the support profiles to the substructure.

It stops the screwing process at exactly the right moment. With the VARIO JT6-2/5-5.0x30, EJOT offers the ideal fastener for connecting wall brackets to support profiles.

In this part we would like to show you the basic procedures for screw manufacturing, take you on a journey into the production of EJOT and introduce you to the individual production phases using the example of the EJOT self-drilling screw JT3-18-5.5. Two manufacturing processes for thread production First of all, a distinction is made between two different manufacturing processes: machining and forming.

Let us take a look at two types of anchors: The self-undercutting anchors such as the LIEBIG SUPERPLUS and the concrete screw JC2 Plus: The sharp edged segments of the LIEBIG SUPERPLUS sleeve cut deep into the concrete in the borehole.

There are both self-drilling screws with low drilling capacity (also called drilling performance) for thin sheet metal and screws with large drilling capacity such as the EJOT JT3-18, which cut through thick substructures made of construction steel up to a thickness of 16 mm.

The EJOT JF and JT screw types are generally considered to be pre-drilled when calculating the edge distances.

A distinction must be made between JT screws (classic drill point with cutting edge) and JF screws (unique tip geometry without cutting edge).

The EJOFAST® JF2-2H-4.8 is a side lap screw for profiled metal sheets in areas that are not exposed to the weather.

The EJOFAST® JF2-2H-4.8 is a side lap screw for the connection of cassette wall systems.