Abstract: Fastening means for a pair of flaps or the like are provided having first and second ferromagnetic plates, an elongated ferromagnetic element of cross-sectional area smaller than the area of the surfaces of either plate affixed at one end thereof substantially normal to a surface of the first of the plates, and magnetic means affixed in close proximity to the elongated element along a substantial portion, but not all, of its length. It is also contemplated that the above elements will be mounted by means of first and second thermoplastic mounting elements upon a pair of thermoplastic strips, which strips are affixable to facing surfaces of the flaps, in such a way that the nonsecured end of the elongated element releasably lockably engages a surface of the second plate in flush abutting relation when the fastening means is in the closed position.