EXPANSION DOWEL FOR FIXING PLATES OF INSULATING MATERIAL

摘要

FIELD: machine building. ^ SUBSTANCE: invention refers to expansion dowel (1) for fixing plates (2) of insulation material with zone (5) of expansion, expansion element (8) out of plastic and fixing disk (7). The expansion element corresponds to expansion screw (8) with specified place (14) of destruction in its head (11). ^ EFFECT: expansion dowel facilitates reliable protection of screw rod from damages at screwing with high torque. ^ 7 cl, 1 dwg