Abstract: A pole holding member made of synthetic resin comprises a cylindrical main body having a bottom and a core fitted into an inner space of the main body. A pole piece holding hole for holding a contact pin is formed in an outer periphery of the core, and is provided in the form of a fitting groove with a U-shaped section having a lateral cleavage portion opening on the side of the periphery of the core. A bottom wall portion of the main body is provided with the pole piece holding hole through which the contact pin passes. In the pole holding member, it is possible to facilitate an operation process for fitting the contact pin into the pole holding member to hold in a connector referred to as a so-called D-subconnector.