产品名称：平头半空心铆钉（镀铜）
属性：五金装配螺丝系列，又名对锁螺丝
品种：扁头十字、内六角、沈头等
规格：M4--M8（内牙纹）和2mm--10mm
材质：A3铁（铜、紫铜、不锈钢需要订制）
表面处理：镀铜、镀白锌、蓝白锌、黑锌、镀青古铜、镀红古铜等
Hardware assembly serew
☉Variety：flat and Philips recessed, inner hexagon,countersunk,etc.
☉Specifications：M4--M8(lnner thread) and 2mm--10mm
☉Material：A3lron(bronze and stainless steel should be ordered in advance)
☉Surface treatment：Nickel plating,copper plating, White zinc plating,
blue and white zinc plating,black zinc plating,
bronze plating, red bronze plating,etc.
