Diameter : M4 / 4mm
Length : 8mm (not absolutely fully threaded.., see photos)
Drive : T15 Torx Driver / Key (also called Star or 6-Lobe, or Hexalobular Internal)
Type : Torx Button Head Screw
Thread Size : 0.70 - UNC / Coarse Thread
System of Measurement : Metric
Material : Titanium Grade 5 also know as Ti6Al4V, Ti-6Al-4V or Ti 6-4 - Extreme Strength -
Specifications : DIN 9427