This is the little screw mainly used on M.2 SSD NVMe card, WLAN cards, Laptop, Desktop, Cooling Fan, Multi I/O Boards, Webcams, Keyboards, Laptop Bottom case, and even some Palmrests and Base plastics. Specification: Color: Black Material: Steel Finish: Nickel Plated Groove Type: Phillips Thread Thread size: M2.0 x 3.0 mm Shoulder Diameter: 1.851.98 mm Shoulder Length: 3.0 mm (Not included head) Head Diameter: 4.04.5 mm Head Thickness (Head Height): 0.70.8 mm