Computer case fan water-cooling radiator long screws are suitable for installing and fixing the water-cooling radiator and its associated fan in the case. | Nail Length: 30mm/1.18 inch; Thread Length: 9mm/0.35 inch; Head Diameter: 8mm/0.31 inch; Thread Diameter: 3.5mm/0.14 inch; Color: Black; Material: Carbon Steel; Style: Flat Nail Head; In the package of: 60PCS x Case Fan Screws | The PC fan screws are made of metal material, durable and practical, not easy to rust. The pc case fan screws have sufficient strength and durability to withstand high pressure and high temperature. By providing efficient cooling, the screw can effectively reduce the temperature of the computer, thereby prolonging its life. | Turn off the computer and power-plug. Insert the long screw into the mounting hole at the bottom of the fan and pass it through the hole or interface of the water-cooling radiator. Use a screwdriver or nuts to tighten the screws to ensure that the water-cooling radiator and fan are securely attached to the chassis. | Please allow slight errors due to manual measurement. Choose long screws of the appropriate size. When tightening screws, avoid over-tightening which may cause damage to the screws or parts. Before installing the fan and water-cooling radiator, fixing the water-cooling radiator on the chassis and then installing the fan on the water-cooling radiator is recommended.