Computer Case Screw Kit for Motherboard and Fan Pack of 620 All 620Pcs PC Case Screws are in one plastic case Package:100pcs metric round head 6*6 coarse thread screw, 30pcs iron pillar for mainboard 100pcs hex head 6*6 coarse thread, 100pcs metric round head with cap 3*5 fine thread screw 10pcs Thumb screw, 100pcs insulated washers, 50pcs case fan screw 100pcs metric round head with cap 3*6 fine thread screw,30pcs brass pillar for mainboard