Stabilizing features in a wear member assembly

A hollow ground-engaging wear member attachable to a support structure, the wear member comprising:

• a leading end arranged to engage ground and a rear end having a cavity formed therein, the cavity having an inner surface and having a longitudinally extending axis, the cavity having a front portion and having a rear portion adjacent the rear end,
• the inner surface having horizontally separated opposing inner walls, the inner surface also having vertically separated opposing inner walls forming an upper inner surface and a lower inner surface,
• the upper inner surface and the lower inner surface each having a centrally disposed, inwardly protruding surface portion arranged to provide a bearing fit with the support structure, each inwardly protruding surface portion being disposed only in the rear portion of the cavity and shaped to form an arc, the inwardly protruding surface portion being arranged to support vertically imposed loads at the leading end;
• and
• a pair of holes in the respective horizontally separated opposing inner walls, each hole of the pair of holes arranged to receive a locking pin, and wherein the inwardly protruding bearing surface of the upper inner surface and the inwardly protruding bearing surface of the lower inner surface are positioned at least partially rearward of the pair of holes.