M12 x 1.25 x 50mm Metric Extra Fine fully Threaded Hexagon Head Set Screw  
Zinc Flake Geomet Coated High Tensile 10.9 Grade Steel 
DIN 961 
Length does not include bolt head
Head Height - 7.5mm
Spanner Size - 19mm
 
This is the preferred coating for fasteners and other parts in the automotive industry, as they offer various advantages:
Good appearance (colouring)
Very good protection against corrosion (500-1000 hours with a required duration of salt spray in the case of our products)
Resistant to extreme temperatures
Excellent chemical resistance
Environmentally friendly
Excellent friction characteristics
No warm-loosening torque
No risk for high-strength fasteners of any hydrogen embrittlement
Electric conductivity