T5/PX/PK125 Front Drum Brake Adjuster

  Adjusting nut frontbrake PX
(adjusting "screw")
Art.-No. 17964100

My PK125 forks (which I am fitting into a pk80) have the brake arm/lever (same type as a T5/PX on them but nothing else - to connect up the front brake cable, I need this adjusting screw, what else will I need? how does the cable fix in? Can anyone help?