Screw DIN 7985 M8x20 4,8 zinc flake black PH4

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 use Ideal for screw connections in mechanical engineering.

The material is steel.

Coating: black zinc cloth. Main characteristics of this coating:

• Organic black topcoat;
• Excellent corrosion protection;
• High hiding power on silver and black base coatings;
• Attractive uniform black appearance;
• Very good chemical resistance; increased UV resistance;
• Excellent adhesion, i.e. the coating does not peel, crack or flake even under mechanical stress or chemical attack;
• Integrated lubricant component for controlled friction characteristics;
• No hydrogen embrittlement;
• Excellent corrosion resistance in NSST and cyclic corrosion tests.