TE Connectivity 130531 is an insulated spade terminal for 14-16 AWG wire with a #8 stud size. It features a crimp termination and tin-plated copper contact.
TE Connectivity 52950-3 is a spring spade terminal for 16-22 AWG wire with #8 (M4) stud size. It features a closed barrel, straight orientation, and tin-plated brass contact with red partially insulated sleeve.