Fasteners, drivers, punches, fastener systems, and methods of making fasteners, drivers, punches, and fastener systems are disclosed herein. The fasteners, drivers, punches, and fastener systems include, in one example, stabilizing ribs and corresponding recesses.

A driver for applying torque to threaded fasteners has a plurality of teeth extending along and projecting outwardly from a longitudinal axis of a body on which the teeth are located. The teeth have a helical twist about the longitudinal axis. Each tooth has an angularly oriented engagement surface which is engageable with similarly angularly oriented surfaces within recesses in the head of a compatible fastener. When the driver engages the recesses torque applied to the driver draws the driver deeper into the recesses as the engagement surfaces react against and slide over the angularly oriented surfaces within the recesses. The torque also causes the fastener to turn and advance or retract depending upon the sense of the torque and the angles of the engagement surfaces and the angles of the surfaces within the recesses. The fastener and its method of manufacture are also disclosed.

A self-drilling ground screw for electrical grounding. The self-drilling ground screw includes a shaft having a proximal end and a distal end, wherein a head is affixed to the proximal end. The shaft further includes a threaded portion and a drill bit portion thereon, wherein threading is disposed about the shaft along the threaded portion. The drill bit portion includes spiral cutting edges therealong. A protrusion extends from the distal end, wherein the protrusion tapers to a point.

The invention relates to an accessory for securing points darrt on fencing pes, comprising a screw for securing the point darrt which is located on the tip of a fencing pe, in order to close the circuit of the electric touch-detection device with which said swords are equipped. The invention includes a screw-coupling tool, characterised in that the screw includes a central axially-extending through-hole having a hexagonal or any other prism-shaped configuration, while the actuation end of the tool includes a first cylindrical or frustoconical segment so that it can be easily fitted to the hole in the screw. In addition, a collar is provided half-way along the length or height of the screw, which serves as an end-stop element.

An anti-vibration fastener, including a square flange bolt to affix a first object to a second object, the square flange bolt including a first threaded portion disposed at a front end of the square flange bolt, and a second threaded portion disposed at a rear end of the square flange bolt having a diameter smaller than a diameter of the first threaded portion, and a forward nut to encapsulate at least a portion of the square flange bolt such that the first object and the second object are disposed between the forward nut and the front end of the square flange bolt, and an aft nut to encapsulate at least a portion of the square flange bolt and the forward nut.

A picture hanger includes a base having a front face and a rear end. An elongated shaft protrudes from the front face along a longitudinal axis. The elongated shaft includes a pointed end and male threads along a length. A head extends from the rear end of the base. A channel is defined between the head and the base.

A loudspeaker system comprises a speaker frame and a grill assembly formed of a number of components that can be molded in different colors, removed from the frame for painting or other customization and/or replaced with other grill components in order to vary, as desired, the aesthetic appearance of the loudspeaker system.

A torque enhancing device that includes a torque contact body having one or more torque driver and/or recessed recipient torque contact surface configurations, inclusive of those in a multi-tier arrangement. The body having a Z-axis depth or thickness, and each of the torque contact surface configurations includes a pair of X-axis extending torque contact side walls that are spaced apart by L1 along a Y-axis, and a pair of Y-axis extending torque contact side walls that are spaced apart by L2 along the X-axis, with at least one of the one or more torque contact surface configurations having four concave contoured surface portions positioned between respective adjacent most ends of the X-axis extending torque contact side walls and the Y-axis extending torque contact side walls, and a length ratio L2/L1 is less than 1 as to provide a torque enhancement contact surface configuration. A method of driving such as insertion or removal of the recessed recipient such as in fastener form is included.

A torque enhancement device having torque enhancement member(s) with each having an exterior (preferably bi-symmetric or essentially bi-symmetric) surface configuration with parallel, longer side walls extending in a Y-axis direction and shorter side walls extending in an X-axis direction and corner recesses positioned between ends of adjacent longer and shorter side walls, and with some embodiments of the invention featuring a torque enhancement device having a hole extending in a Z-axis direction. A fastener assembly is also provided that includes one or more torque enhancement devices as well as methods for utilization of the torque enhancement device or utilization or assemblage of an assembly including a torque enhancement device. The surface configuration includes arrangements where there is a torque differential in one direction or the other as well as arrangements that are adapted to handle both standard fastener configurations and torque enhancement configurations with a common torque enhancement device.

A fastener designed to reduce or eliminate stripping the fastener (e.g., as a result of camming-out during drilling of the fastener either into or out of a material). Also, a driver bit tip design to engage with the fastener, along with a tool designed to form the fastener, as well as a method of forming the fastener. In an example, the fastener includes a shank and a head on one end of the shank. The head comprises a recess pattern that includes one or more wing recesses with sidewalls that extend from the head towards the shank. The head further includes an overhang structure at a top end of the at least one of the sidewalls, the overhang structure extending laterally outward from the sidewall. A corresponding driver bit includes a complementary feature that engages with the overhang structure to inhibit cam-out.