Solderless Terminals Molex Solderless Terminals are constructed of tin-plated brass, per NEMA specifications, and are available insulated, non-insulated, or partially insulated. The insulators are molded vinyl (PVC), extruded nylon, or molded nylon. The QD family consists of fully insulated male quick disconnects, Avikrimp includes fully-insulated quick disconnects, flags, and piggyback quick disconnects. Fully-insulated male quick disconnects are precision engineered, allowing the terminal to fit precisely into a female terminal. This splice may be connected and disconnected without damage to the nylon insulation.