Structure for fastening by screw

Details Structure for fastening by screw Structure for fastening by screw

2005-09-20

2005-09-20

Cottingham, John R. (Department: 2116)

Joints and connections

Having a joining piece extending through aligned openings in...

C411S386000, C411S412000, C411S413000, C411S387100

Reexamination Certificate

active

06945729

ABSTRACT:
A second material is fastened to a first material by a tapping screw having a male thread. The first material includes a hole and a concave portion around the hole. The hole has a surface in which a female thread is formed as the tapping screw is screwed in.

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