Specifications:

MPN - RV-0004
Thread size -  M12 x 1.5
Spanner size -  21mm Hex
Thread length - 16mm
Overall bolt length - 16mm (inc the head)
Seat type -  Taper (Cone shaped)
Bolt finish -  Zinc plated
Bolt material - Heat treated carbon alloy steel 10.9 grade

Grade 10.9 bolts are manufactured using medium carbon steel, medium carbon steel alloy and low carbon boron steel that has been quenched and tempered. 10.9 bolts exhibit high tensile strength and good wear resistance.