-For specific parameters, pls refer to photo 2.
-Thread Length: about 6mm for M2; 8mm for M2.5; 10mm for M3 M4 M5 M6
-Specification Eg: M2*3.5*20 ( thread diameter ID = 2mm, Outer Diameter OD =3.5mm, Length L = 20mm)
-Packing: Plastic bag / Carton box