Abstract: A lockwireless, anti-rotation fitting for attachment to connectors, including a sleeve, nut, spring, and retaining washer. The sleeve is slidably inserted within the nut and the spring is inserted on the sleeve, grips it, and locks the sleeve with the nut. The nut includes a plurality of serrations which engage a tab extending from the spring. The spring, which is semi-anchored to the nut, can only rotate inwardly or in the clockwise direction. The tab of the spring may only ratchet over the serrations when a predetermined counter-clockwise or loosening torque is applied to the nut. The serrations allow for rotation in the clockwise direction, while preventing counterclockwise rotation until a predetermined torque is reached.

Abstract: A fastener assembly for installation within a work piece, the fastener assembly including a bolt, a retainer ring, and a housing that houses the retainer ring. The housing is positioned at and engages one side of the work piece, while the bolt is inserted into a hole of the work piece on an opposite side thereof. The retainer ring engages the bolt such that a plurality of pressure pads extending from a plurality of corresponding spring beam elements of the retainer ring reside in an annular groove of the bolt. The housing captivates the bolt onto the work piece, while providing a positive hold out of the bolt.

Abstract: A retainer ring including an outer ring having an exterior surface, an interior surface, and a plurality of spring beam elements extending inwardly from the interior surface, and a central aperture. Each of the spring beam elements includes an elongated arm having a first end attached to the interior surface of the outer ring and a second, free end opposite the first end. Each of free ends of the arms includes a tab portion and a pressure pad that extends from the tab portion. The retainer ring captivates pin members, such as bolts, onto work pieces, such that the pressure pads engage and align with an annular groove of the bolt. When the bolt engages the retainer ring, each of the spring beam elements is displaced and expands radially from a free position to an expanded position in order to enable the bolt to travel through the aperture. The retainer ring captivates the bolt onto the work piece, while providing a positive hold out of the bolt.

Abstract: A fastener assembly for installation within a work piece, the fastener assembly including a bolt, a retainer ring, and a housing that houses the retainer ring. The housing is positioned at and engages one side of the work piece, while the bolt is inserted into a hole of the work piece on an opposite side thereof. The retainer ring engages the bolt such that a plurality of pressure pads extending from a plurality of corresponding spring beam elements of the retainer ring reside in an annular groove of the bolt. The housing captivates the bolt onto the work piece, while providing a positive hold out of the bolt.

Abstract: A fastener including a bolt and a grommet assembly attached to the bolt for fastening to a work piece. The grommet assembly includes an upper grommet, a lower grommet attached to the upper grommet, a retainer ring, and a housing that houses the retainer ring within the lower grommet. The upper grommet is inserted into a hole at one side of the work piece and the lower grommet is attached to the upper grommet through the hole at an opposite side of the work piece. The retainer ring is inserted into the lower grommet and encapsulated by the housing. The bolt is inserted into the grommet assembly, and the retainer ring engages the bolt such that a plurality of pressure pads extending from a plurality of corresponding spring beam elements of the retainer ring reside in an annular groove of the bolt. The grommet assembly captivates the bolt onto the work piece, while providing a positive hold out of the bolt.

Abstract: A fastener including a bolt and a grommet assembly attached to the bolt for fastening to a work piece. The grommet assembly includes an upper grommet, a lower grommet attached to the upper grommet, a retainer ring, and a housing that houses the retainer ring within the lower grommet. The upper grommet is inserted into a hole at one side of the work piece and the lower grommet is attached to the upper grommet through the hole at an opposite side of the work piece. The retainer ring is inserted into the lower grommet and encapsulated by the housing. The bolt is inserted into the grommet assembly, and the retainer ring engages the bolt such that a plurality of pressure pads extending from a plurality of corresponding spring beam elements of the retainer ring reside in an annular groove of the bolt. The grommet assembly captivates the bolt onto the work piece, while providing a positive hold out of the bolt.

Abstract: A retainer ring including an outer ring having an exterior surface, an interior surface, and a plurality of spring beam elements extending inwardly from the interior surface, and a central aperture. Each of the spring beam elements includes an elongated arm having a first end attached to the interior surface of the outer ring and a second, free end opposite the first end. Each of free ends of the arms includes a tab portion and a pressure pad that extends from the tab portion. The retainer ring captivates pin members, such as bolts, onto work pieces, such that the pressure pads engage and align with an annular groove of the bolt. When the bolt engages the retainer ring, each of the spring beam elements is displaced and expands radially from a free position to an expanded position in order to enable the bolt to travel through the aperture. The retainer ring captivates the bolt onto the work piece, while providing a positive hold out of the bolt.

Abstract: A lockwireless, anti-rotation fitting for attachment to connectors, including a sleeve, nut, spring, and retaining washer. The sleeve is slidably inserted within the nut and the spring is inserted on the sleeve, grips it, and locks the sleeve with the nut. The nut includes a plurality of serrations which engage a tab extending from the spring. The spring, which is semi-anchored to the nut, can only rotate inwardly or in the clockwise direction. The tab of the spring may only ratchet over the serrations when a predetermined counter-clockwise or loosening torque is applied to the nut. The serrations allow for rotation in the clockwise direction, while preventing counterclockwise rotation until a predetermined torque is reached in order to prevent self-loosening. The spring prevents accidental loosening due to vibration of components of the system to which the fitting is attached.