A locking member, comprising a first end, a second end opposite the first end, a shank portion extending from the second end to a location intermediate the first and second ends, a flanged portion extending from the shank portion and to the first end, a bore extending from the first end to the second end and including a first interior portion located within the shank portion and a containment cavity located within the flanged portion and proximate to the first end, and an inner wall defining the containment cavity, the containment cavity including an inner diameter that is greater than an inner diameter of the first interior portion of the bore, wherein the inner wall of the containment cavity includes one from: a first concave surface located proximate to the first interior portion, and a second concave surface located proximate to the first end; a first convex surface located proximate to the first interior portion, and a second convex surface located proximate to the first end; a first convex surface located proximate to the first interior portion, and a second concave surface located proximate to the first end; a first flat surface located proximate to the first interior portion, and a second concave surface located proximate to the first end; or a first region located proximate to the first interior portion and having a plurality of concave surfaces, and a second region located proximate to the first end and having a concave surface, and wherein the inner wall of the containment cavity additionally includes a third flat surface (123c, 223c, 323c, 523c, 723c) intermediate and joining the first and second surfaces or first and second regions, and a fourth flat surface (123d, 223d, 323d, 523d, 723d) joining the first surface or first region with the first interior portion. wherein the inner wall of the containment cavity includes one from: a first concave surface located proximate to the first interior portion, and a second concave surface located proximate to the first end; a first convex surface located proximate to the first interior portion, and a second convex surface located proximate to the first end; a first convex surface located proximate to the first interior portion, and a second concave surface located proximate to the first end; a first flat surface located proximate to the first interior portion, and a second concave surface located proximate to the first end; or a first region located proximate to the first interior portion and having a plurality of concave surfaces, and a second region located proximate to the first end and having a concave surface, and a first concave surface located proximate to the first interior portion, and a second concave surface located proximate to the first end; a first convex surface located proximate to the first interior portion, and a second convex surface located proximate to the first end; a first convex surface located proximate to the first interior portion, and a second concave surface located proximate to the first end; a first flat surface located proximate to the first interior portion, and a second concave surface located proximate to the first end; or a first region located proximate to the first interior portion and having a plurality of concave surfaces, and a second region located proximate to the first end and having a concave surface, and wherein the inner wall of the containment cavity additionally includes a third flat surface (123c, 223c, 323c, 523c, 723c) intermediate and joining the first and second surfaces or first and second regions, and a fourth flat surface (123d, 223d, 323d, 523d, 723d) joining the first surface or first region with the first interior portion.