Abstract: A twist-on electrical connector connects plural insulated electrical conductors. The connector may be manually twisted onto the conductors by an installer. The connector includes an outer insulative shell and an expandable spring held within the shell. The shell includes a pair of generally diametrically opposed wings which may be gripped by the installer to facilitate twisting of the connector onto the wires. The wings conform to the fingers of the installer to permit the easy gripping and twisting of the connector onto the conductors.

Abstract: A twist-on electrical connector connects plural conductors, preferably stripped ends of insulated conductors. The connector includes an outer insulative shell having a cavity open at one end. The cavity supports an expandable generally conical spring which accommodates the conductors. The shell includes plural ribs extending into the cavity for engagement with the spring upon radial expansion thereof. The ribs have tapered extents so that the ribs deform in both the radial and transverse direction upon expansion of the spring to control the rate of spring expansion.