Structural diagram of screw assembly List of parts and components of screw assembly No. Designation Qty(pcs/unit) 1 Retainer ring 1 2 Feeding screw head 1 3 Feeding cone screw head 1 4 Pressure ring 170 2 5 Middle section single screw head 3 6 Pressure ring 175 2 7 Short single screw head 1 8 Kneading ring 6 9 Pressure ring 132B 1 10 Pressure ring 195 1 11 Discharging cone screw head 1 12 Discharging screw pressing sleeve 1 13 Screw M36X150 1 14 Discharging cone screw head(slotting) 1