Blue insulated ring for 14-16 AWG, #5/16 stud
The 2-328998-1 is a blue PIDG ring terminal from TE Connectivity AMP Connectors, accepting 14-16 AWG wire and fitting a #5/16 stud. The tin-plated copper contact and serrated termination bite into the conductor during crimp; the nylon insulation is rated for free-hanging in-line mounting and carries ROHS3 compliance.
