The 33470 is a non-insulated circular ring terminal for 4 AWG wire with a #5/16 stud size. It features crimp termination, tin-plated copper contact, and a brazed seam with serrated termination.
TE Connectivity 33462 is a non-insulated ring connector for 8 AWG wire with a 5/16 stud size. It features a crimp termination and a brazed seam with serrated termination.
3M 12-56S-W is a non-insulated circular ring terminal designed for 14-16 AWG wire with a #5/16 stud size. It features crimp termination, copper contact with tin plating, and a brazed seam.