Further improved locking device

A locking device for use with a screw-threaded fastener threaded to a work piece, said locking device comprising:

• a first body coaxial with the fastener;
• said first body having a central through-hole therethrough and comprising an outer portion defining at least one pocket within the outer portion;
• and
• at least one further body having a first and second projection retained in a respective one of said apertures, said first and second projection being connected together by a spring member,
• said first projection extending through the respective one of said apertures and having an end portion jutting above an adjacent surface of the first disc-like body to engage an adjacent planar surface on the fastener or work piece when compressed on tightening of the fastener so that said first projection deflects within the respective aperture in which it is located under the influence of the tightening of the fastener such that under any tendency to loosen, the first projection jams against the adjacent planar surface of the fastener or work piece and resists loosening of the fastener;
• and
• wherein the first and second projection are aligned with the respective aperture such that the first projection is adjacent a first side wall of the respective aperture and the second projection is adjacent a second side wall of the respective aperture.

A locking device for use with a fastener, said locking device comprising:

• the locking devices has a screw-threaded for attaching to a mating body having a respective screw-threaded opening and said locking device defines at least one pocket within the fastener;
• at least one further body having a first and second projection retained in a respective one of said pockets, said first and second projection being connected together by a connecting member,
• said first projection extending through the respective one of said pockets and having an end portion jutting below the fastener to engage a surface below the fastener and on or above the mating body when compressed on tightening of the fastener so that said first projection deflects within the respective pocket in which it is located under the influence of the tightening of the fastener such that under any tendency to loosen, the first projection jams against the adjacent planar surface on or above the mating body and resists loosening of the fastener;
• and
• wherein the first and second projection are aligned with the respective pocket such that the first projection is dimensioned to engage a first side wall of the respective pocket and the second projection is dimensioned to engage a second side wall of the respective pocket.