Expansion-shafted nut with thread in reduced section

摘要

An expansion part (5) with small outside diameter lies between the nut bearing surface (7) and the threaded part (3) containing the nut thread (6). Below the bearing surface so as to enclose the nut part (1) is a sleeve (2) whose waisted part rotates into the small outside diameter part (5) and is non-detachably connected to the nut part. When the nut lies on the bearing surface (10). The nut and sleeve may be preferably cold-formed from tube. The bearing surface can be obtained by beading the top rim of the nut and surface is produced by beading round the bottom rim (9) of the sleeve. A lubricant introduced between nut and sleeve, specifically between bearing surface and the top rim (8) of the sleeve, consists of dry molybdenum disulphide.