FIELD: machine building.
SUBSTANCE: invention relates to fixture elements, particularly to screws. Thread cutting screw contains partly outfitted by thread rod, for twisting-in into preliminarily implemented openings, and head. Between head of screw and thread it is implemented free of thread section. Thread (4) at least in directed to head (3) of screw area of rod allows at least one crossing thread (4) and finishing on free from thread section (2) groove (5) or cut or groove, herewith thread (4) at least in directed from head (3) screw end area it is implemented as triangular.
EFFECT: there is increased protection against untwisting of screw at connection to each other of thin steel sheets.
25 cl, 12 dwg
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