SELF-TAPPING SCREW,申请号SG20130078894-传众专利搜索

SELF-TAPPING SCREW

申请公布号：SG194603(A1)

申请号：SG20130078894

申请日期：2011.04.28

申请公布日期：2013.12.30

申请人：

NITTO SEIKO CO., LTD.

发明人：TORII SHINGO;YOKOTA MASANORI;ABE MASANORI

摘要：<p>- 13 -[Problem] To provide a self-tapping screw which is the most suitable for tightening a workpiece made of a soft material such as a resin or an aluminum alloy. [Solution] In the self-tapping screw 1 including a normal thread 10 and a female screw molding thread 12 having a larger diameter than that of the normal thread 10, out of pitches of the normal thread 10 positioned in a head portion side from the female screw molding thread 12, any one pitch is set to be larger than other pitches. The self-tapping screw 1 not only reduces driving torques but also improves fastening force, and thus can be applied to various workpieces made of the soft material as well as a hard material.(Fig. 2)</p>