Item : Bolt 
Head type : Lench type ( hexagon type : 
size : dia : 2mm, height : 1.5mm)
Specification : M3 bolt 
Head dia size : 5mm.  Head height : 2mm.
Screw length : 6mm 
Material : special steel.( for marchine )
Q\'ty : 40,000pcs /lot ( about one month one time )
Item : Spring washer
Size : inner dia : 3.15mm, outer dia : 6.25mm , thickness : 1.3mm
q\'ty : 10,000pcs /lot ( one month one time )