This is a Bossard 2096803 screw, which has a M2.5x20 thread size, a 0.45mm pitch, a cheese head profile, a Pozidriv drive type, a PZ1 profile, is made from steel, and is coated in zinc. This screw is ideal for applications that require high degrees of fastening force, thanks to the steel construction. The zinc coating provides additional corrosion protection to reduce the wear and tear on the screw.