This hexagonal socket screw is suitable for mounting of e.g. optical drives or hard drives in drive bays, as well as fixation of graphics cards, Mainboards, etc. Technical specifications: Material: Copper plated steel Overall length: 10,4mm Thread length: 8mm Head diameter: 7,4mm Thread size: M4 Extent of delivery: 1x Screw ISO 7380 M4 x 10 hexagonal socket fillister head copper plated