自攻螺钉，头型非常多，一般沉头和盘头较为常用，表面处理一般为镀锌白色的，尖头处有像钻头一般的钻，实际应用中较多人将其应用在木头上，但其主要的用途是应用于薄的金属板上面，如薄铁皮和薄铁板之间的连接等。沉头自攻螺钉螺纹呈搭线螺旋上升，但螺纹较纤维板钉更小，螺纹表面具有较高的硬度。因此可在薄的金属板连接中，在被连接件的螺纹底孔中攻出内螺纹，从而形成连接。

Countersunk head self tapping screw has many head types. Generally, countersunk head and pan head are commonly used. The surface treatment is generally galvanized white. There is a drill like a drill at the tip. In practical application, many people apply it to wood, but its main purpose is to apply it to thin metal plate, such as the connection between thin iron sheet and thin iron plate. The thread of countersunk head self tapping screw rises in the form of ground screw, but the thread is smaller than that of fiberboard screw, and the thread surface has higher hardness. Therefore, in the thin metal plate connection, the internal thread can be tapped out in the threaded bottom hole of the connected part to form the connection.

宏耀科技（浙江）股份有限公司（原浙江省嘉善县宏耀五金工业有限公司）是一家于2005年3月注册成立的紧固件制造商，本公司拥有60台套由台湾企业制造的***生产设备，年产达5000吨。

Hone-year technology（zhejiang）Co.,Ltd（Jiashan Hone-year Manufacture Industry CO.,Ltd） was founded in March 2005.we has 60 sets of advanced production equipment, with an annual output of 5000 tons.

公司主要产品有干壁钉、纤维板钉、自攻钉、钻尾螺钉、非标螺钉等，产品远销日本，哥伦比亚，法国，德国等欧美和地区并受到广大客户的称赞！

our company mainly produces various series of self-drilling screw with tapping screw, dry wall screw, fiber board screw, self-tapping screw, machine screw, all kinds of non-standard goods. Products are exported to Japan, Colombia, France, Germany and other Europe and Americ, and praised by the majority of customers!