Patent ID: 8902580

Claim:
A heat dissipation device, comprising: a base defining a receiving portion extending therethrough in a vertical direction, the receiving portion including an inserting hole and a mounting hole communicating with each other in a transverse direction perpendicular to said vertical direction, via a narrowed joint located between said inserting hole and said mounting hole and dimensioned with thereof a width smaller than diameters of both said inserting hole and said mounting hole; and a fastener including at least a head portion, an engaging portion with threads thereon which is diametrically smaller than the head portion, and therebetween a neck portion which is diametrically smaller than both said head portion and said engaging portion; wherein said width of said narrowed joint is dimensioned to be small enough to allow only said neck portion to snugly pass therethrough in the transverse direction while precluding said engaging portion and said head portion from passing therethrough when installing the fastener into the base from the inserting hole to the mounting hole; wherein said base forms a plurality flanges around the mounting hole except at a position adjacent to the joint for protection of the head portion when the fastener is moved from the inserting hole to the mounting hole.