Geeetech

I have a problem. The instructions are:

1.Thread a M3 hex nut to the M3 x 50 screw.
2.Thread the A21 to the M3 x 50 screw.
3.Thread the spring to the the M3 x 50 screw through the hole of A21.
4.Thread A22 to the M3 x 50 screw.
5.Thread another M3 hex nut to the M3 x 50 screw, compress the spring ...