FIELD: applicable for attachment of members of metal girders, in particular, metal members of power transmission line supports. SUBSTANCE: threaded connection comprises a threaded member, installed on whose threaded section after its installation in the pack of connected members is a standard spring washer with a cup located on it, a flat washer is installed in the cup before the nut, and standard nut or nut with coded faces is screwed up by a special wrench. After that a washer-stopper is press-fitted in the cup. EFFECT: prevented access to the nut and disassembly of connection. 4 cl, 9 dwg
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