FIELD: machine building.
SUBSTANCE: mounting screw for attachment of device parts on hollow chamber profile contains head and threaded section with external thread. Inside diameter of external thread expands, conically in particular, in direction of the head. Relation of head outside diameter to maximum inside diameter of external thread is between 1.15 and 1.5, between 1.2 and 1.3 in particular. Surface on head on its side directed to threaded part counter-supporting. Counter-supporting surface has frictional device.
EFFECT: long-term fixed connection of parts.
10 cl, 2 dwg
