A quick-disconnect (QD) sling swivel includes a main body receivable in a socket on a firearm, a locking mechanism coupled to the main body, and an actuation mechanism coupled to the locking mechanism and depressible in a direction generally perpendicular to a longitudinal axis of the QD sling swivel. When the actuation mechanism is depressed, the locking mechanism is in a first position such that the main body is decouplable from and is freely movable in and out of the socket. When the at least one actuation button is not depressed with a portion of the main body received in the socket, the locking mechanism is in a second position such that the main body is interlockingly received in the socket with the locking mechanism engaged therewith.

A thrust screw includes a head, a first shank, a second shank, and a drilling member. The first shank and the second shank are arranged between the head and the drilling member. The second shank is provided with an external thread. The first shank is provided with a thrust member corresponding to the external thread. The thrust member includes two wing-shaped stop pieces and two flat portions. The two flat portions are formed on the two wing-shaped stop pieces respectively and correspond to the external thread. The two flat portions have an outer diameter greater than that of the external thread. The two flat portions of the thrust member stop a further screwing motion of the external thread.

A conceal buckle apparatus includes a box, a buckle, an axle and a locking element. The box includes a rim, a back plate and a connective plate formed between the rim and the back plate. An opening includes a portion in the connective plate and another portion in the back plate. The buckle includes two lateral portions extending out of the recess via the opening and a middle portion extending perpendicular to the lateral portions. The axle is connected to the lateral portions of the buckle and formed with two terminal sections each of which comprises at least three faces. The locking element is connected to the box and formed with five contact portions. Two of the contact portions are in contact with two of the faces of the axle when the lateral portions of the buckle extend perpendicular or parallel to the back plate.

A screwable device having a retractable threaded section that has a generally tubular shaft extending along a longitudinal axis and having a front section formed with a radially outwardly open aperture and a rear section. At least one locking element comprising a threaded section and being radially displaceable in the aperture between an outer position with the threaded section projecting radially outward from the shaft and an inner position in which the threaded section is recessed within the tubular shaft. An actuating is rod coaxially slidable in the shaft between a front position and a rear position, the actuating rod having a push-button at its rod rear end, the actuating rod having a structure for engaging the locking element in at least one of its positions pressing the locking element into the outer locking position.

A lifting eye having a lower part, for connecting the lifting eye to an object to be handled or fastened, and a swivel eye. The lower part has a swivel part which can be rotated relative to the lower part. The swivel eye is pivotably mounted relative to the swivel part. The swivel eye has a bearing pin connected to each leg of the swivel eye. Each bearing pin engages in a bearing recess of the swivel part. The pivot axis of the swivel eye relative to the swivel part, which axis is defined by the bearing pins and their engagement in the bearing recesses of the swivel part, intersects the central longitudinal plane of the swivel eye.

A clamp apparatus is disclosed. The clamp apparatus includes a first half having a first end and a second end; a second half having a first end and a second end, the first and second halves being connected together at the first ends; and wherein the second end of the first half and the second end of the second half are flared outwardly away from a centerline of the clamp apparatus to receive a conductor therebetween.

A carabiner includes a swivel loop and a body rotatably coupled to the swivel loop about a rotational axis. The body includes a spine having a spine axis that intersects the rotational axis at an intersection point disposed within the connection between the swivel loop and the body. The carabiner also includes a captive eye formed completely within the spine. The body and the captive eye being both rotatable relative to swivel loop.

The present invention is directed at a wire-cage mountable multi-part fastener adapted for holding pet accessories. The fastener can be securely attached to a cage by mutually abutted fastener's female and male portions, from the inside and the outside of the cage, respectively. When said female and male portions are pressed into one other by threadable means while having the cage's bars sandwiched between them, the resulting friction allows the fastener to remain in a stationary relation to the cage.

An anchoring assembly comprises a stud with an external elongate surface carrying a screw thread, and a through tunnel fabricated on the stud intersecting and perpendicular to a longitudinal axis of the stud; a construct comprising an eyelet enclosing an opening and a pair of holder members extending out from the eyelet; a nut having a sidewall defining an internally threaded passage, the nut carrying a pair of axially aligned and radially extending through holes on the sidewall, the through holes being adjustable to align with the through tunnel forming a continuous passage thereof; and a pivot pin fillable into the passage across the through holes and the through tunnel to lock the nut to the stud. The eyelet is configured to be rotatable around the longitudinal axis of the stud and the locked nut impedes the construct to move along longitudinal axis of the stud.

A method for forming a stop flange on a self-tapping screw includes locating a shank of a self-tapping screw between two threading dies, fixing one of the two threading dies and moving the other one of the two threading dies to work the shank, the external thread forming section of each of the threading dies performing threading to form an external thread on the shank, inserting the insert and the recessed corner of each of the threading dies into a top of the external thread to form a groove in the shank, and the insert of each of the threading dies gradually squeezing downward an extruded portion that is formed during formation of the groove to form a stop flange on the shank. Thus, the shank is integrally formed with the stop flange, to stop an excessive movement of the external thread.