Patent ID: 8669774

Claim:
A probe pin comprising a plunger formed of a sheet metal, and a coil spring unit formed of a metal wire and configured to hold the plunger thereon, wherein: in a developed state, the plunger includes a first portion and a second portion each of which has an upper contact strip, a wide portion, and a lower contact strip, and which are connected to each other via the wide portions formed in the first and second portions; the plunger is formed in a united manner by folding together the first and second portions along a boundary of the wide portions formed in the first and second portions to thereby bring at least the wide portions formed in the first and second portions into tight contact with each other; a resilient deformation portion is formed at a lower portion of each of the lower contact strips formed in the first and second portions; and when the first and second portions are folded together to form the plunger, the lower contact strips formed in the first and second portions are brought to come into tight contact with each other except for the resilient deformation portions and form a unitary body whereas the resilient deformation portions form paired resilient deformation portions that are resiliently deformable with respect to each other.