PIDG ring terminal for 14 AWG circuits
The 52274-1: The tin-plated copper contact is rated for crimp termination in free-hanging applications; the nylon insulation accommodates wire insulation diameters from 0.079" to 0.130" (2.00mm to 3.30mm).
Position within the PIDG ring terminal family
Within the PIDG ring terminal series, the 52274-1 (14 AWG, #4 stud) sits between the 52273 (22 AWG, #4 stud) and the 51864-9 (14 AWG, #10 stud) — the 52273 uses a narrower 0.218" (5.54mm) outer width for smaller wire, while the 51864-9 uses a larger 0.312" (7.92mm) outer width for the same wire gauge but a larger stud.