Dual-function pin for push-pull and lift-turn stoppers

A pin for a drain closure assembly, comprising:

• a head;
• a shank extending below the head;
• threads disposed below the shank and configured to couple with the internal threads of a strainer body;
• an upper groove disposed in the outer surface of the shank and substantially adjacent to the head of the pin;
• a lower groove disposed in an outer surface of the shank;
• and
• a substantially flat shank surface disposed on the outer surface of the shank and extending along a length of the shank from below the upper groove past at least a lower wall forming the upper groove.

A drain closure assembly, comprising:

• a strainer body comprising a bore with internal threads;
• a stopper comprising a head and a sleeve extending below the head of the stopper;
• a pin comprising:
• a head,
• a shank extending below the head,
• threads disposed below the shank and configured to couple with the internal threads of the strainer body,
• an upper groove disposed in the outer surface of the shank and substantially adjacent to the head of the pin,
• a lower groove disposed in an outer surface of the shank, and
• a substantially flat shank surface disposed on the outer surface of the shank and extending along a length of the shank from a bottom surface of the shank to a bottom surface of the head of the pin;
• and
• a D-ring configured to fit into the upper groove.