An electrically conductive terminal is configured for insertion into an opening in a substrate. The terminal includes a body having proximal and distal ends. The distal end is configured for insertion into the opening. The body includes a wall having an outer surface and a compliant barb that includes a base portion, an apex portion, a barb inner surface, and a barb outer surface. The base portion is disposed on the outer surface of the wall, along the body. The apex portion extends from the base portion in a direction from the distal end to the proximal end at an angle from the wall outer surface. The apex portion is located between the base and the proximal end. The barb inner surface faces the wall outer surface. The barb inner surface and the barb outer surface converge to the apex so that the cross-sectional width of the barb is non-uniform.