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发明名称
自攻丝螺钉
摘要
本实用新型公开了一种联接工艺简单、联接强度高、用于1mm以下薄板联接的自攻螺钉。它是在粗牙普通螺纹螺钉的螺杆的末端设有一个孔的成型部分[3],成型部分[3]是由几个刀刃[4]构成的锥体,装配时,可使钻孔、攻丝、旋紧一次完成,成型部分[3]的刀刃[4]前角可为零或小于零,装配时,可加大薄板上的螺纹长度,提高螺钉的联接强度。
申请公布号
CN2149505Y
申请公布日期
1993.12.15
申请号
CN93201254.X
申请日期
1993.02.03
申请人
李淑琴
发明人
李淑琴
分类号
F16B25/06
主分类号
F16B25/06
代理机构
代理人
主权项
1、一种自攻丝螺钉,由螺钉头和螺杆构成,其特征在于:螺杆[2]的末端有一孔的成型部分[3],成型部分[3]的形状是带有几个刀刃[4]的锥体。
地址
300041天津市和平区职工中等专业学校
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