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A screw with a half-round head has the appearance of an ordinary metal rod, at one end of which there is a head that transmits torque, and at the other end there is an external thread. The head of the screw is needed in order to use special tools (wrench, screwdriver, pneumatic or electric gun, etc.) to press the parts of the structure to be connected.
Field of useIdeal for screw connections in mechanical engineering.
The material of manufacture is steel, strength class 4.8.
Coating Zinc (Plated) protects against corrosion, if it is planned to use fasteners in aggressive conditions.