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09.03.2022, Construction Division The new EJOFAST® JF3-Plus adds a powerful product to the proven EJOFAST® self-drilling screw range from EJOT. The new, ETA-certified EJOFAST® JF3-Plus has significantly improved load-bearing capacity in timber and is available in diameters of 4.9 and 6.8 mm.

Downloads Press release EJOFAST JF3-2-6.0 [PDF; 123 KB] Picture EJOFAST JF3-2-6.0 [PNG; 5.3 MB]

The EJOFAST® family for various applications on the roof The self-drilling screws of the EJOFAST® family allow secure application to the surface.

The EJOFAST® family for various applications on the facade The self-drilling screws of the EJOFAST® family allow secure application to the surface.

The EJOFAST® family for various applications in solar installations The self-drilling screws of the EJOFAST® family allow secure application to the surface.

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.

Further information about the EJOFAST® family is also available in the brochure. Brochure EJOFAST Plus Self-drilling screws Brochure EJOFAST Self-drilling screws

Clever & Clean The unique tip geometry without cutting bit, the high assembly speed as well as the load capacity of the EJOFAST® screws are of great advantage when fastening solar installations and increase the safety of the fastening.

For these particular applications, the company has special products in its portfolio, which are used, for example, for fastening chipboard and for fastening attachments in plasterboard, masonry and concrete. The EJOFAST® self-drilling screw is offered for connecting steel ventilation ducts.

Fastening in steel substructures For use in thicker steels, however, screws with a finer thread geometry are necessary in order to form a fine thread. The EJOT JZ3 screws can be named here as an example.

They are particularly corrosion-resistant and designed for a reliable and long-lasting connection. The screws JZ3-6.3x19 E16 are used to connect the support profiles.

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"!

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.

The CRF depends on the corrosiveness of the respective environment and can be calculated using the following formula: CRF = F1 + F2 + F3 F1: Risk of exposure to chlorides F2: Risk of exposure to sulphur dioxide F3: Cleaning concept and exposure to washing away the construction due to rain Depending on the given condition, the CRF value may range between 1 and < -20.

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.

A distinction must be made between JT screws (classic drill point with cutting edge) and JF screws (unique tip geometry without cutting edge). The unique tip geometry of the JF screws enables an improved application behaviour on the component surface compared to classic self-drilling screws.

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