An item for tightening including a first part including a first end part forming an end piece to engage with the head of a screw, and a second end part to engage with an actuating member, such that activation of the actuating member causes turning of the screw and the tightening, this first part being able to break into two portions upon reaching the recommended tightening torque, respectively a first portion including the first end part and a second portion including the second end part. A second part is mounted tightly about the first part, a holding device is provided in part on the first part and in part on the second part and being able to retain the second portion of the first part inside the second part of the item in order to prevent this second portion leaving this second part of the item after rupture of the first part.

An item for tightening including a first part including a first end part forming an end piece to engage with the head of a screw, and a second end part to engage with an actuating member, such that activation of the actuating member causes turning of the screw and the tightening, this first part being able to break into two portions upon reaching the recommended tightening torque, respectively a first portion including the first end part and a second portion including the second end part. A second part is mounted tightly about the first part, a holding device is provided in part on the first part and in part on the second part and being able to retain the second portion of the first part inside the second part of the item in order to prevent this second portion leaving this second part of the item after rupture of the first part.

A mechanical grounding clamp including a body, having an upper plate defining a threaded hole therethrough and having an outer surface, a lower plate spaced apart from the upper plate and having an inner surface, and a connecting plate connecting the upper plate to the lower plate, a fastener mateable with the threaded hole in the upper plate and having a proximal end and a distal end, the distal end extendable through the threaded hole of the upper plate and toward the inner surface of the lower plate. There may be a nut on the fastener for driving toward the upper plate to secure a grounding conductor to the body.

A signal connector includes a main body and positioning device. The main body has a front section with an end connector and a rear formed by an accommodating groove with a threaded hole and insert hole. The positioning device is received into the accommodating groove of the main body, composed of a clamping piece and screwing elements. The clamping piece is at the bottom of the groove, with a threaded hole. The screwing element is inserted through the insert hole and secured in the threaded hole. After foresaid are combined, the conducting filament of a transmission line can be tightly clamped by the clamping piece by rotating the screwing element to move the clamping piece upward, ensuring enhanced signal transmission.

Systems and methods for providing screw bosses on a substrate. The substrate can be dimpled. The dimples can then be threaded to accept screw bosses. The dimples can be threaded using a threading die or can have threads cut by self-tapping screw bosses. An adhesive can be applied to the substrate, the bottom of the screw boss, or both. The screw bosses can include standoffs to determine the distance between the bottom of the screw boss and the substrate. The screw bosses can be threaded onto the dimples and can provide threads for attaching items to the substrate. A filler material can be applied to the reverse side of the substrate to fill-in the dimples and present a smooth surface. A decorative or protective layer can be applied over the filler material.

A cover for an electrical connector comprises a cylindrical disc including a first cover surface, an opposite second cover surface, and a barrel surface extending between the first cover surface and the second cover surface. The first cover surface has a convex form. In a state in which the cover is mounted on the electrical connector, the first cover surface forms a portion of an outer surface of the electrical connector and the second cover surface faces an inner side of the electrical connector.

A cover for an electrical connector comprises a cylindrical disc including a first cover surface, an opposite second cover surface, and a barrel surface extending between the first cover surface and the second cover surface. The first cover surface has a convex form. In a state in which the cover is mounted on the electrical connector, the first cover surface forms a portion of an outer surface of the electrical connector and the second cover surface faces an inner side of the electrical connector.

The present invention relates to a reusable mains-power electrical connector. The connector includes a connector body for receiving cables and fasteners. One or more protectors are located within the body to protect the received cables when the fasteners engage with the protectors to fasten the cables within the body. The connector also includes relieving means for relieving the cables of the protectors when releasing the fasteners to remove the cables. Advantageously, the connector may be re-used when the fasteners engage with the protectors to fasten new cables received within the body.

A connector comprises a pressing assembly and a contact prevention member. The pressing assembly has a first receptacle receiving a first conductor, a pressing member which can be activated from an exterior of the pressing assembly, and a chamber. The contact prevention member has a contacting slot open to an interior of the contact prevention member and a second receptacle receiving a second conductor. The contact prevention member is insertable into the chamber of the pressing assembly in an insertion direction.

An LED light strip includes a plurality of LEDs provided at regularly spaced intervals on a printed circuit board (PCB), and a screw-in terminal connector with at least two ports provided at opposite ends of the PCB and electrically connected to the plurality of LEDs for allowing the LED light strip to be connected to a power source, a data source, additional LED light strips, as well as other DC powered components via wire conductors.