FIELD: machine building.
SUBSTANCE: invention relates to threaded joints. Fastening connection thread between first module (56) and second module (58), in which first connecting element (52) of first module (56) has profile (22) of first fastening thread and second connecting element (54) of second module (58) has profile (24, 26) of second fastening thread, wherein first fastening thread profile (22) is made so that first connecting element (52) is suitable for fastening connection with second connecting element (54), wherein first fastening thread profile (22) has a reduced cross-sectional area relative to second standardized fastening thread profile (26); wherein the cross-sectional area of the fastening thread profile is defined as an area comprising one element consisting of a thread turn and a groove; first fastening thread profile (22) is a female fastening thread profile, and profile (24, 26) of the second fastening thread is the profile of the male fastening thread.
EFFECT: improved thread of fastener, particularly ease of use, safety of connection and adaptability to various applications.
13 cl, 22 dwg
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