Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having structure to restrict rotation of threaded – mating... – Comprising a thread lock
Patent
1998-05-20
2000-10-24
Saether, Flemming
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having structure to restrict rotation of threaded, mating...
Comprising a thread lock
411417, F16B 3930
Patent
active
061356891
ABSTRACT:
A self-locking fastener wherein crests of respective threads of a part of a group of threads on the self-locking fastener are deformed to provide a group of lock portions so that the respective threads have a cross section of a trapezoidal-shape over an arcuate region of 10 to 40 degrees about an axis of the self-locking fastener in a cross section perpendicular to the axis. In addition a region, in which a group of the lock portions are formed in an axial direction of the self-locking fastener, is such that when the self-locking fastener is screwed into a nut, a major part of the group of lock portions are screwed into threads of the nut.
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Aoyama Seisakusho Co., Ltd.
Saether Flemming
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