Fastening devices and systems and methods thereof. Fastening devices and systems and methods thereof can include a unitary or one-piece body having first and second ends configured and operative to be coupled together or to be coupled to their respective complement in another of said fastening devices. The first end can include a ring or annular portion and a projection that are sized and shaped to fit around an anchor and in an orifice, respectively, of the second end. Fastening devices and systems and methods thereof according to embodiments may be used with items, including footwear, apparel, luggage, a backpack, a bag, a purse, a boxing glove, a punching bag, football or lacrosse shoulder pads, or the like.

A fastening device for connecting identified openings, including: an elongated main body member defining a longitudinal axis, the main body member having a first end portion and a second end portion at opposite ends of the longitudinal axis; first and second tip end members located at the first end portion and second end portion of the body, respectively, the first and second tip end members each adapted to fit through one of the identified openings; and a first deformable interference portion located between the main body member and the first tip end member, and a second deformable interference portion located between the main body and the second tip end member; where the first and second deformable interference portions are each normally located in a rest state where they define an outer dimension that prevents their passage through one of the identified openings. Other embodiments, features and methods are also described.

A dual retention apparatus comprises: a locking pin; a pin retaining device, the pin slidable therein, comprising: a starting pin position; a pin locking mechanism; a partial pin locking mechanism; a pin path from the starting pin position to the pin locking mechanism, the partial pin locking mechanism located on the pin path and configured to prevent the pin from sliding back towards the starting pin position and allowing the pin to slide towards the pin locking mechanism, the pin locking mechanism configured to lock the pin therein; and a pin return path from the pin locking mechanism to the starting position, the pin return path bypassing the partial pin locking mechanism; and, a biasing device configured to relatively bias the pin along at least a portion of the pin path towards the pin locking mechanism, and further bias the pin into the pin locking mechanism.

A safety belt buckle, which includes a buckle member, a hook, a stop member, a latch member and a release button, wherein the latch member has a tongue plate which enters a chamber of the buckle member through a lateral opening of the buckle member, and pushes the stop member to a predetermined position; when the stop member stays at the predetermined position, the hook is restricted by the stop member, and stopped at another predetermined position to engage the tongue plate, which makes the latch member unable to separate from the buckle member. By pushing the release button connected to the stop member, the hook can pivot unrestrictedly, therefore the tongue plate is no longer engaged by the hook, and the latch member and the buckle member can separate from each other.

Clip-type cable management apparatus and methods are disclosed. In one embodiment, a first jaw and a second jaw having interleaved tines in a predetermined configuration are coupled by a hinge pin around which a torsion spring is disposed to urge said first jaw and said second jaw pivotally toward a close position so as to securely retain a cable being folded or coiled into a bundle of cable segments. Such cable management is further enhanced with additional features, optimized structures, and operating methods.

A fastening device for connecting identified openings, including: an elongated main body member defining a longitudinal axis, the main body member having a first end portion and a second end portion at opposite ends of the longitudinal axis; first and second tip end members located at the first end portion and second end portion of the body, respectively, the first and second tip end members each adapted to fit through one of the identified openings; and a first deformable interference portion located between the main body member and the first tip end member, and a second deformable interference portion located between the main body and the second tip end member; where the first and second deformable interference portions are each normally located in a rest state where they define an outer dimension that prevents their passage through one of the identified openings. Other embodiments, features and methods are also described.