Ring terminal for #4 stud, 16-18 AWG
The 1577630-1: The nickel-plated copper contact and PEEK insulation suit high-temperature or corrosive environments; the serrated termination grips the conductor during crimp.
Stud size selection across the series
Within the PIDG, Strato-Therm series the 1577630-1's #4 stud sits alongside the #8 stud of the 1577632-1, the #10 stud of the 1577633-1, and the 1/4 stud of the 1577634-1 — all share the same 16-18 AWG wire range, nickel-plated copper contact, PEEK insulation, and 0.032" (0.81mm) thickness, so the stud size is the sole selection axis.