Systems and method are provided for joining components. A pin may have a head, and a stem extending from the head. The stem may have a tapered section. A collar may have a shank with a through-hole. Another tapered section may be formed by the shank so that a tapered surface of the tapered section faces into the through-hole. The pin and the collar may be configured so that the stem is received in the through-hole. The tapered sections mate together, and the tapered surface contacts the tapered section of the stem.