CPC F16B 39/16 (2013.01) [F16B 39/14 (2013.01); F16B 39/282 (2013.01)] | 20 Claims |
1. A locknut with a nut body having a threaded portion with an internal thread, a perimetral shoulder adjacent thereto and a collar surrounding the shoulder, and with an annular washer made of metal, wherein the collar is bent inwards and an annular groove is formed between the bent collar and the shoulder, wherein the annular washer is received in the annular groove, an internal thread corresponding to the internal thread of the threaded portion is formed at the inner perimeter of the annular washer, the internal thread of the annular washer is being axially offset by a distance relative to the internal thread of the nut body, and a series of projections or recesses is formed on the shoulder or on the annular washer where the annular washer and the shoulder mutually overlap, the projections or recesses projecting or recessing in the axial direction and being arranged distributed around the perimeter of the annular washer or of the shoulder.
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