THREAD-CUTTING NUT, STOCK FOR NUT MANUFACTURING AND THREADED CONNECTION OF NUT AND BOLT Russian patent published in 2016 - IPC F16B37/00 

FIELD: construction.

SUBSTANCE: subject of the invention is a stock (cast) for nut manufacturing and a threaded connection of such nut and bolt. The nut comprises a threaded hole with bearing thread turns placed along the peripheral surface of the hole, at the same time thread turns in separate areas are fully formed, and between these areas of thread turns there are free gaps with thread turns not fully formed along their height. Bearing thread turns in the threaded hole are arranged with their grooves on the outer diameter (Dn) of thread, and by their profile tops - on the inner diameter of the thread (D1). Thread turns have free gaps that partially expand a threaded hole in direction from the inner diameter (D1) of thread to the outer diameter (Dn) of thread. Specified free gaps end at a certain distance from the outer diameter (Dn) of thread on the diameter (Da) of outer circumference.

EFFECT: opportunity to cut fully functional threads on smooth bolts or clean already available threads.

9 cl, 7 dwg