Self-tapping screw TORX DIN 7981C 3.9x38 galvanized

Product detailed description

The TORX DIN 7981C self-tapping screw with dimensions of 3.9 x 38 mm is intended for use in sheet metal materials. This type of screw is made of steel and surface-treated with galvanic zinc, which increases its resistance to corrosion. The zinc coating is passivated, which means that the surface of the screw is protected by a thin layer that reduces the risk of oxidation and extends the life of the component.

The screw head is cylindrical and rounded, which allows for aesthetic embedding into the material without sharp edges. The screw is equipped with a TORX-type groove, which is known for its internal six-lobed (hexalobular) profile. This profile ensures better torque transmission and minimizes the risk of damage to the groove during assembly. The use of the TORX groove also reduces the risk of tool slippage, which is a common problem with traditional grooves.

The DIN 7981C standard, according to which this screw is manufactured, specifies the requirements for self-tapping screws with a cylindrical head and a pointed end, intended for fastening in sheet metal. These screws are ideal for applications where it is necessary to create a thread directly in the material without prior threading. The screw with dimensions of 3.9 x 38 mm is suitable for medium-thick sheets, where it provides sufficient connection strength.

Due to its properties, this screw is widely used in industrial applications, the automotive industry, as well as in construction, where a reliable and durable connection of sheet metal components is required.