A T-Nut comprising a tubular body attached to a flanged head is provided. The tubular body includes a bottom portion of constant diameter and an upper neck portion with a neck diameter that gradually increases as it approaches the flange head. Additionally, the bottom surface of flange head of the T-Nut may be recessed inwardly towards the top surface of the flange head to create circumferential concave cavity underneath the flange head, which will allow the flange head to envelope any portions of a washer or casing that may be above the surface of the material being joined.

A connector (1) for releasably engaging a slot (10) in a support member (11). The connector (1) includes a body (2) in having a blind bore (20), within which is received a retaining element (3), a threaded insert (4) and a bolt (5) with a shaft (50). The threaded insert (4) provides a threaded hole (40) that receives the shaft (50). The bolt (5) has a head (51) at a first end of the shaft (50) and the retaining element (3) is secured to a second end thereof to inhibit removal of the shaft (50) from the body (2). The shaft (5) has a central threaded portion (55) between the head (51) and the retaining element (3) to engage the threaded hole (40) such that rotation of the body (2) relative to the bolt (5) draws the head (51) toward the body (2) to captivate and clamp an overhang (13) of the slot (10) in the support member (11) between the head (51) and the body (2).

The invention relates to a fastening arrangement including a profiled strut and a plug-in nut mounted in an aperture of the profile strut, wherein the plug-in nut has a threaded nut held on a clasp, wherein the clasp has a first and a second actuating end, via which the plug-in nut projects out of the aperture, wherein in a locking position of the actuating ends relative to each other an edge of the aperture is received in a receptacle of the clasp. Additionally, a corresponding switch cabinet housing is disclosed.

Expandable collet bodies with sectional finger-based anti-rotation features are disclosed. The collet body comprises not only a plurality of gripping finger as a first part of a two-part anti-rotation means (ARM), but also a first part of a two part translation arresting means (TAM), which may or may not be sectional in nature. The TAM prevents over translation of a collet body within the work piece(s), and cooperates with a second part of the TAM associated with a work piece or an auxiliary structure. In this manner, a collet body inserted into a work piece or auxiliary structure will not accidentally be pushed beyond the blind side of the work piece(s) during insertion or initial clamp-up.

Expandable collet bodies with sectional finger-based anti-rotation features are disclosed. The collet body comprises not only a plurality of gripping finger as a first part of a two-part anti-rotation means (ARM), but also a first part of a two part translation arresting means (TAM), which may or may not be sectional in nature. The TAM prevents over translation of a collet body within the work piece(s), and cooperates with a second part of the TAM associated with a work piece or an auxiliary structure. In this manner, a collet body inserted into a work piece or auxiliary structure will not accidentally be pushed beyond the blind side of the work piece(s) during insertion or initial clamp-up.

A first example box nut retainer includes a support, a fastener sleeve, and a wing. The fastener sleeve defines an opening and extends downwardly from the support. The wing extends from the support and has a top corner between the support and the fastener sleeve.

A first example box nut retainer includes a support, a fastener sleeve, and a wing. The fastener sleeve defines an opening and extends downwardly from the support. The wing extends from the support and has a top corner between the support and the fastener sleeve.

A method for making a screw hole in a workpiece including a plate-shaped portion includes: preparing an auxiliary member having a flat plate shape; forming, in the plate-shaped portion, a first pilot hole having a minor diameter smaller than a major diameter of the screw hole; forming, in the auxiliary member, a second pilot hole having a minor diameter smaller than the major diameter of the screw hole; fixing the auxiliary member to the plate-shaped portion so that the first pilot hole is concentric with the second pilot hole; and making the screw hole in the plate-shaped portion and the auxiliary member by inserting a tap in the first pilot hole and the second pilot hole.

A method for making a screw hole in a workpiece including a plate-shaped portion includes: preparing an auxiliary member having a flat plate shape; forming, in the plate-shaped portion, a first pilot hole having a minor diameter smaller than a major diameter of the screw hole; forming, in the auxiliary member, a second pilot hole having a minor diameter smaller than the major diameter of the screw hole; fixing the auxiliary member to the plate-shaped portion so that the first pilot hole is concentric with the second pilot hole; and making the screw hole in the plate-shaped portion and the auxiliary member by inserting a tap in the first pilot hole and the second pilot hole.

The present invention belongs to the technical field of electric push rods, and specifically discloses a sliding limit type nut structure, a telescopic rod and an electric push rod. The sliding limit type nut structure includes a sliding contact assembly, where an inner wall of the sliding contact assembly is provided with internal threads, both ends of the sliding contact assembly are provided with external threads and a sliding sleeve, respectively, and an outer wall of the sliding sleeve is provided with chutes. According to the present invention, the internal threads of the sliding contact assembly and the chutes on the sliding sleeve are used to convert a helical motion into stable linear sliding, which makes the motion process more stable.