Ring terminal for 10-12 AWG, 5/16 stud
The 31123 is a non-insulated ring terminal from TE's Budget series, accepting 10-12 AWG wire and fitting a 5/16 stud. Tin-plated copper contact, 0.039" (0.99mm) thick, with a serrated termination that bites into the conductor during crimp.
How it compares to Solistrand ring terminals
The 31123's 0.039" (0.99mm) thickness is heavier than the 0.031" (0.79mm) of Solistrand siblings like 1377172-9 (1/4 stud) and 1377172-7 (8 stud), both of which also carry a brazed seam — the Budget series omits the brazed seam.