YFS Hex Socket Screw 6#32*5/16 size PCIE screws / colorful Washer

-for most case, 6# size screws are used for PCIE. but for few cases, they are also used for motherboard while most case use M3*6 for motherboard. for example, our fractal terra case uses 6#32*5/16 for motherboard, while T1 case uses M3*6 for motherboard. -if you want to use washer, please make sure the sureface is flat so it can fit. -if possible, buy some extra quantity as the shipping costs much more than the item itself. -YFS is a premier manufacturer of 12.9-grade alloy steel socket screws, renowned for quality that exceeds international standards.