An insulated socket body and terminal assembly comprising, a spring terminal including upper and lower contact ends (772,774) connected by a central spring; an upper insulated socket body portion having a contact guide opening including a spring recess section and a guide opening section; and a lower insulated socket body portion having a contact guide opening including a spring recess section and a guide opening section, wherein the upper and lower insulated socket body portions are received together in mated relation along a mating plane to define a socket body with a lumen extending therethrough, wherein the spring terminal is received within the lumen with the central spring in the spring recess sections and the upper and lower contact ends in the respective upper and lower guide opening sections, said upper and lower contact ends projecting outwardly from respective upper and lower surfaces of the upper and lower insulated socket body portions, said upper and lower guide opening sections (782a, 787a) having a first diameter that is concentric along a central compression axis, said central spring recess sections being configured to retain the central spring of the spring terminal in a first uncompressed configuration and in a second compressed configuration, the assembly being characterized in that, the central spring comprises a cantilever spring lever extending perpendicular to the central axis, and the spring recess sections (782b, 787b) have a second larger diameter that is eccentric with respect to the central axis at the mating plane such that there is first stop created between an upper face of the lower socket body portion and a wall section of the spring recess section and a second stop created between a lower face of the upper socket body portion and a wall of the spring recess section, the stops (785, 786) providing a fixed counter force point for central spring. a spring terminal including upper and lower contact ends (772,774) connected by a central spring; an upper insulated socket body portion having a contact guide opening including a spring recess section and a guide opening section; and a lower insulated socket body portion having a contact guide opening including a spring recess section and a guide opening section, wherein the upper and lower insulated socket body portions are received together in mated relation along a mating plane to define a socket body with a lumen extending therethrough, wherein the spring terminal is received within the lumen with the central spring in the spring recess sections and the upper and lower contact ends in the respective upper and lower guide opening sections, said upper and lower contact ends projecting outwardly from respective upper and lower surfaces of the upper and lower insulated socket body portions, said upper and lower guide opening sections (782a, 787a) having a first diameter that is concentric along a central compression axis, said central spring recess sections being configured to retain the central spring of the spring terminal in a first uncompressed configuration and in a second compressed configuration, the assembly being characterized in that, the central spring comprises a cantilever spring lever extending perpendicular to the central axis, and the spring recess sections (782b, 787b) have a second larger diameter that is eccentric with respect to the central axis at the mating plane such that there is first stop created between an upper face of the lower socket body portion and a wall section of the spring recess section and a second stop created between a lower face of the upper socket body portion and a wall of the spring recess section, the stops (785, 786) providing a fixed counter force point for central spring.