Abstract text

A socket for an electrical part has a socket body 14 and a contact pin 15. The contact pin 15 has a fixed portion 15e fixed to a through hole 14d of the socket body 14, a plate-like elastic pieces 15b extending upward from the fixed portion 15e and a contact portion 15c to contact the electrical part. The elastic piece 15b is elastically deformable along a plate surface of the elastic piece so as to cause the contact portion to contact to and separate from a terminal of the electrical part. A biting portion 15f formed between the fixed portion 15e and the contact portion 15c for biting a bitten portion 14h formed on an inner wall of the through hole 14d. When the biting portion 15f bites the bitten portion 14h, vertical movement of the contact pin 15 is restricted and also a preload is given to the elastic pieces 15b in a direction of closing the contact portion 15c of the elastic piece 15b.