... computer fan screw: 1.For cpu cooler,computer fan,power supply 2.Material:copper,iron,steel 3.Size:4.8x10(mm) or specify computer case screw ... 4.8x10(mm)1.For cpu cooler,computer fan,power ... standards5.If customers need cooling fans,we will free screw,their packaging in the following manner: cpu fan parts---Iron screw 4.8x10(mm)