watch case screw Diameter:M01.0-4.0mm; material:steel,brass finish: ... frequently-used size, produce as your requirement is okFigure of screw headP/T/B/F/V/WHP/LH, etc.Figure of ... productsprecision screw,micro screw,machine screws,self tapping screw,stainless steel,brass screw,nylok screw,shoulder screw,washer screw,colored head screw,water proof screw,hard disk screw,camera screw,watch screw,precision ...