Patent ID: 7419343

Claim:
A t-nut integrally formed of a metal material, comprising: (i) a shank portion shaped in a cylindrical tube extending vertically, having a first end and a second end, comprising: a base portion formed as placed closer to the first end than a border, the border being formed between the first end and the second end; a caulking portion formed as placed closer to the second end than the border; and a female screw formed on an inner surface of the base portion, and (ii) a flange portion having a first surface extending horizontally from the first end of the shank portion, the flange portion having a second surface opposed to the first surface, having a first edge and a second edge opposed to the first edge, comprising: a first pair of claws formed on the first edge to extend along the shank portion; a first projection formed between the first pair of the claws, formed by partially bending up the flange portion at the first edge such that the second surface of the first projection is parallel to the first edge and the second edge; a second pair of claws formed on the second edge to extend along the shank portion; and a second projection formed between the second pair of the claws, formed by partially bending up the flange portion at the second edge such that the second surface of the second projection is parallel to the first edge and the second edge, wherein each of the first projection and the second projection has an edge facing upward in the direction of the second end.