The present disclosure provides an improved screw and method of manufacturing thereof. The method comprising the steps of manufacturing 101 the screw body by cold forging process using ferrous alloy, making 102 a hole 301 on the screw head 201 to form a base of the hole and a wall thickness 501 of the screw head 201 for providing an internal drive, forming 103 a layer 602 of hard ferrous alloy in the hole 301 with the screw head 201 wherein the layer 602 having high hardness than the screw body 200, optionally smoothening 104 the layer 602 using a conventional process and machining 105 the layer 602 to obtain the internal drive 601 thereby achieving increase in hardness and wear-resistance of the internal drive 601.

The invention relates to a screw, a tool and a system for dental implantology, forming a fixing system and the components thereof to be used in a dynamic pillar assembly. Said dynamic pillar assembly is used in the production of prostheses on dental implants in human implantology in order to fix screws at an angle.

A screw includes at least one helical thread with a peripheral edge having notched regions spaced apart by notch-free regions. An underside of a head of the screw includes projecting nibs.

A threaded fastener includes a head end, a shank and an entry end, the head end located at one end of the shank and the entry end located at an opposite end of the shank. The head end includes an end face with a drive recess configured for being driven by multiple drive bit shapes, including a star or six lobe drive, a Phillips drive, a square drive and a flat blade drive.

Screw for introducing into an underground, comprising a screw shaft and a screw head which is adjoining the screw shaft, in which a drive is formed for rotary driving the screw by a drive element, wherein the drive comprises a hollow wing section at an outer side of the screw with a circular hollow core and hollow wings which are provided along the circumference, wherein the drive comprises a hollow recess section at an inner side of the screw, and wherein the drive at a transition between the hollow wing section and the hollow recess section comprises a chamfer section whose outer surface is angled with respect to an outer surface of the hollow wing section and with respect to an outer surface of the hollow recess section.

Methods and apparatus for a fastener head having a dual zone socket area and a mating driver bit according to aspects of the present technology include a fastener configured with driving surfaces adapted to provide enhanced engagement between each other during use. The fastener includes a recessed socket area with a sidewall that has an upper inwardly tapering section and a lower vertical section that extends to the bottom of the recessed socket area. The upper inwardly tapering section of the sidewall may also include an offset relative to the lower vertical section to create asymmetrical driving and removal surfaces. The technology also includes a corresponding mating driver bit configured with mating surfaces to the fastener to provide enhanced engagement between the fastener and mating driver bit. The technology also allows either the fastener or the driving bit to be used with preexisting fasteners and driver bits.

A threaded insulating glass unit plug for sealing an aperture in a spacer frame of an insulating glass unit, method of assembly and installation is provided. The threaded insulating glass unit plug includes a head integrally formed with threaded body. The head has a recess formed for engaging a tool for installation during use. The body includes a cylindrical portion and a conical portion, the cylindrical portion spacing the conical portion from the head. A plurality of threads extend along the entire length of cylindrical portion.

Fasteners are disclosed for use with multiple standard torque delivery tools. The fasteners include several different torque bearing portions for use with different torque delivery tools, as well as non-torque bearing portions disposed between torque bearing portions.

Screws are provided which have a longitudinal axis and include a threaded shank and a head wherein a socket is formed to be engaged by a wrench and having a pluri-lobed outer profile comprising a series of lobes circumferentially offset and separated by a series of circumferentially offset protrusions of the head. Each protrusion is delimited by two flanks and a front length joining the radially inner ends of the flanks and is convex and symmetrical with respect to a center axis radially oriented with respect to the longitudinal axis. The front length is formed by a center face and two inclined side faces each of which joins the radially inner end of the respective flank with a respective end of the center face, which is oriented orthogonally with respect to the center axis of the protrusion. Pluri-lobed wrenches adapted for use with such screws are also provided.

A twist-drivable pin assembly includes first and second drivers, each having a driving end which can be received in a bore in the end of a twist-drivable pin, and an opposite end at which torque can be applied. The cross-sectional shape of each of the drivers at its driving end has a first plurality of apexes whose relative locations coincide with the apexes of a regular polygon such as a hexagon. The drivers differ from one another in their cross-sectional shapes at the driving end by virtue of one or more faces of at least one of the drivers between adjacent pairs of apexes having a groove formed in it. Each of first and second twist-drivable pins has a bore extending into it which is defined by a second plurality of apexes arranged as a regular polygon such as a hexagon and which is open at one end.