Screw plug for holes with a cylindrical internal thread

摘要

The invention relates to a screw plug for closing off and, if appropriate, sealing holes with a cylindrical internal thread, composed of an engagement means (6) which is suitable for screwing in and unscrewing the screw plug and is intended for a screwdriver or spanner, of a cylindrical threaded-pin part (1), of a thread groove (2) and of a stop part (3), said stop part (3) having essentially the same external diameter as the maximum diameter of the threaded pin (1) and exhibiting a shoulder (4), as stop surface, which complements the countersinking of the screw-in hole which receives the screw plug. <IMAGE>