A plurality of stacked fastener caps, each having a cap body. The cap body has first and second faces joined by a perimeter of the cap body, and adjacent faces of adjacent caps are joined by at least one connecting stem. The adjacent caps and connecting stems are integrally molded as a unit as by injection molding. One or both of the first and second faces may be planar. One of the first or second faces may be concave and the other may be convex. One or both of the first and second faces may have first and second thicker portions with a transverse groove interposed therebetween.