A fastener for connecting an electrical conductor to a connector body, the fastener comprising: a first portion adapted to engage an opening of the connector body, the first portion further including an outer surface having a threaded section and a non-threaded section, the non-threaded section providing a stop to prevent over insertion of the first portion into the opening beyond a predetermined point; a second portion engaging the first portion, the second portion including, a head including an inner surface defining a socket; wherein the fastener is configured to be rotated by a drive tool engaging the socket; a base coupled to the first portion, the base including an end adapted to engage the electrical conductor; and a shearable section positioned between the head and the base; wherein the socket extends from an end surface of the head, through the shearable section, and partially through the base to facilitate removal of the base from the connector body after the head has separated from the base; wherein the base is threadable into the first portion to progressively insert the end into the connector body until the end contacts an outer surface of the electrical conductor; wherein at least a portion of an inner surface of the first portion includes threads, and wherein an outer surface of the base includes threads for threadably engaging the threads on the inner surface of the first portion; characterized by the fastener further comprising a blocking member positioned in the socket between the end surface of the head and an upper surface of the base and configured to inhibit insertion of the drive tool completely within the socket while the head and base are connected such that a torque is applied to the head of the fastener and not to the base. a first portion adapted to engage an opening of the connector body, the first portion further including an outer surface having a threaded section and a non-threaded section, the non-threaded section providing a stop to prevent over insertion of the first portion into the opening beyond a predetermined point; a second portion engaging the first portion, the second portion including, a head including an inner surface defining a socket; wherein the fastener is configured to be rotated by a drive tool engaging the socket; a base coupled to the first portion, the base including an end adapted to engage the electrical conductor; and a shearable section positioned between the head and the base; wherein the socket extends from an end surface of the head, through the shearable section, and partially through the base to facilitate removal of the base from the connector body after the head has separated from the base; wherein the base is threadable into the first portion to progressively insert the end into the connector body until the end contacts an outer surface of the electrical conductor; wherein at least a portion of an inner surface of the first portion includes threads, and wherein an outer surface of the base includes threads for threadably engaging the threads on the inner surface of the first portion; characterized by the fastener further comprising a blocking member positioned in the socket between the end surface of the head and an upper surface of the base and configured to inhibit insertion of the drive tool completely within the socket while the head and base are connected such that a torque is applied to the head of the fastener and not to the base. a head including an inner surface defining a socket; wherein the fastener is configured to be rotated by a drive tool engaging the socket; a base coupled to the first portion, the base including an end adapted to engage the electrical conductor; and a shearable section positioned between the head and the base; wherein the socket extends from an end surface of the head, through the shearable section, and partially through the base to facilitate removal of the base from the connector body after the head has separated from the base; wherein the base is threadable into the first portion to progressively insert the end into the connector body until the end contacts an outer surface of the electrical conductor; wherein at least a portion of an inner surface of the first portion includes threads, and wherein an outer surface of the base includes threads for threadably engaging the threads on the inner surface of the first portion; characterized by the fastener further comprising a blocking member positioned in the socket between the end surface of the head and an upper surface of the base and configured to inhibit insertion of the drive tool completely within the socket while the head and base are connected such that a torque is applied to the head of the fastener and not to the base.