An electric contact part 10 of a female type terminal pin 1A includes: a tube member 11; and a projection 21A. A tab 51 of a male type terminal pin 5 is inserted into the tube member 11 via an opening at one end 11a of the tube member 11. The projection 21A is extended to the tube member 11, and projected toward an inside of the tube member 11 so as to partially cover the opening at the one end 11a of the tube member 11. The projection 21A includes: an extending piece 23; and an abutting piece 24. The extending piece 23 is extended to an upper wall 16a of the tube member 11 and extended toward the inside of the tube member 11. The abutting piece 24 is extended from the extending piece 23 toward the upper wall 16a to prevent the extending piece 23 from approaching the upper wall 16a.