Overview The Screws Kit for X1 Series/P1 Series and AMS offers the screws most commonly used based on user feedback. For more detailed information and image guide, please visit the Bambu Lab Wiki. Screws Information Item Number Item Name QTY Location 1 ST3-4.5 10 Rear Panel and the Front Cover (Front) 2 BT3-6 20 P1S panels and the Z-axis Timing Pulley 3 M3-6 20 XY/Z Motor and the X1 AP Board 4 BT2-8 10 AMS first stage feeder, the MC board, and the Excess chute 5 BT3-8 10 Heatbed Unit and the AMS Main Frame 6 M3-14 10 Driven gear of the Extruder Unit 7 MG2.5-13 10 Cutter lever 8 MG3-14 5 Hotend 9 MG2.5-15 5 Hotend Cooling Fans 10 BTG2-6 10 PTEF tube bracket 11 BT3-5 10 Rear Panel and the Front Cover (Rear) 12 M3-4.5 20 X1C Panels 13 ST2-3.5 10 P1S Panels (Upper) 14 M1.6-4 10 TH Board FPC Cable of X1C toolhead PCBs 15 BT2-5 20 Toolhead housing and PCBs 16 The pressing plate 5 Extruder Gear Assembly 17 0.9x11 mm Helical Compression Spring 5 Extruder Gear Assembly 18 M3-23 5 For the AMS Filament Buffer