Abstract: A spring toilet seat hinge comprising a spring having a leg for pushing a toilet seat from a lowered to a raised position, a helical torsion coil portion, and a linear bracing shank portion. The spring is mounted within the notch of a seat mounting portion, the notch having a round section for receiving the helical torsion coil, and a linear section extending tangentially from the round section, the linear section containing a bracing wall as backstop for the linear shank of the spring. The spring toilet seat hinge also comprises a hinge pin disposed coaxially within the torsion coil section of the spring and mounted to the seat mounting member, and a mounting bolt depending from the bottom of said seat mounting member.