Patent ID: 7645107

Claim:
A push nut comprising: a base plate formed with a bolt passing hole at a center of the base plate; and four engaging pieces wherein pairs of engaging pieces extend respectively from a pair of opposing sides of the base plate, base portions of the four engaging pieces are folded back to have a U-shape, and tip end portions of the engaging pieces extend to a surrounding of the bolt passing hole, wherein the tip end portions of the four engaging pieces surround a periphery of the bolt passing hole, wherein the four engaging pieces incline toward an insertion direction of a bolt and elastically abut against an outer circumference of the bolt, which is inserted into the bolt passing hole, wherein, in a first pair of engaging pieces that extend from one side, a width of the tip end portion of one engaging piece is less than a width of the tip end portion of another engaging piece, wherein, in a second pair of engaging pieces that extend from the other side, a width of the tip end portion of one engaging piece is less than a width of the tip end portion of another engaging piece, and wherein the one engaging piece of the first pair and the one engaging piece of the second pair are obliquely opposed.