Setscrews are ideally used when passed through a threaded hole in the outer object and is tightened against the inner object to prevent it from moving relative to the outer object. It exerts clamping force through the bottom tip that projects through the hole.
High tensile setscrewHexagon HeadFully threadedGrade 8.8Bright Zinc PlatedDIN 933p : 0.8 : Pitch
k : 3.5 : Head Height
AF : 8 : Width Across Flat