A fastening assembly having torquing members that engage notches on a conical securing member. The torquing members being operable by a wrench and able to exert torque on the securing member at the notches to tighten or loosen the securing member.

The present application is directed to an anti-theft lug nut assembly and/or system for vehicular wheel use. A lug nut assembly of this application may be used in connection with each wheel of a particular vehicle. In another instance, multiple lug nut assemblies may be used in connection with a single wheel of a vehicle. In such instances, the lug nut assemblies may incorporate a common key member or distinct key members for use with each distinct lug members. Common wrenches and sockets are unable to engage and turn the lug member of this application as a result of the outer surface configuration of the lug member.

A security fastener for use with a corresponding driver, the fastener comprising: a shank defining a longitudinal centre axis; and a head having a face for mating with a corresponding security bit of the driver, the face including at least one recess for receiving a corresponding projection of the bit, wherein the head has: 1-fold rotational symmetry about the longitudinal centre axis of the shank; and a maximum of 1 mirror plane containing the longitudinal centre axis, such that mating of the corresponding projection of the driver with any of the at least one recesses is achievable only when the driver is in a single angular position with respect to the head, wherein the face comprises a first surface and the at least one recess is defined within the first surface, further wherein the longitudinal centre axis intersects the first surface.