Abstract: The disclosure is of a tamper-proof tubular container, which comprises: a tubular body including a detachable or removable body wall portion contiguous with one end, a plug for the opposite end and a removable closure member mounted on the inner surface of the removable portion. Frangible means permits detachment of the removable portion. The closure member has a threaded portion in contact with the inner surface of the tubular wall, to facilitate removal and replacement of the closure member. The container of the invention is particularly advantageous in that it is lightweight, tamper-proof, secure after opening and replacement of the closure member and is easier to employ for multiple opening and reclosures. The disclosure is also of a self-threading closure member for use in association with tubular-type containers.