The present disclosure relates to a fastener system for use in securing objects, such as stress skinned panels, to a structural support, such as an aircraft spar or cross member. The fastener may be provided with a radially-expandable collar assembly, an anti-rotator assembly, a shaft, and a bolt-lock.

A panel system includes a tab panel having at least one tab extending therefrom. The tab panel has a core and a facesheet adjacent the core. The panel system includes a slot panel having at least one slot receiving the corresponding tab of the tab panel therein. The slot panel has a core and a facesheet adjacent the core. The slot is formed in the facesheet and at least a portion of the core. The panel system includes a clip positioned between the tab panel and the slot panel. The clip is at least partially received in the slot. The clip has a tab panel securing member being secured to the tab panel and the clip has a slot panel securing member being secured to the slot panel. The clip securely joins the tab panel to the slot panel.

A panel system includes a tab panel having at least one tab extending therefrom. The tab panel has a core and a facesheet adjacent the core. The panel system includes a slot panel having at least one slot receiving the corresponding tab of the tab panel therein. The slot panel has a core and a facesheet adjacent the core. The slot is formed in the facesheet and at least a portion of the core. The panel system includes a clip positioned between the tab panel and the slot panel. The clip is at least partially received in the slot. The clip has a tab panel securing member being secured to the tab panel and the clip has a slot panel securing member being secured to the slot panel. The clip securely joins the tab panel to the slot panel.

A panel-insert assembly including a panel and an insert, wherein the panel includes a core and a face sheet positioned over the core, wherein the face sheet defines an opening therein, and wherein the insert is positioned below the face sheet and includes a thread member engaged with the panel, the thread member extending in a first circumferential direction about the vertical axis.

A panel-insert assembly including a panel and an insert, wherein the panel includes a core and a face sheet positioned over the core, wherein the face sheet defines an opening therein, and wherein the insert is positioned below the face sheet and includes a thread member engaged with the panel, the thread member extending in a first circumferential direction about the vertical axis.

A panel apparatus is described that includes a first sandwich panel and a second sandwich panel arranged substantially parallel to each other, and the first sandwich panel and the second sandwich panel each include a core material inserted between at least two skin layers. The panel apparatus also includes at least one mechanical fastener mechanically embedded into the first sandwich panel and the second sandwich panel. The at least one mechanical fastener at least extends through one skin layer and into the core material of the first sandwich panel and at least extends through one skin layer and into the core material of the second sandwich panel, and the at least one mechanical fastener is configured to accept insertion of an item. Methods of assembling the panel apparatus are also described.

A panel apparatus is described that includes a first sandwich panel and a second sandwich panel arranged substantially parallel to each other, and the first sandwich panel and the second sandwich panel each include a core material inserted between at least two skin layers. The panel apparatus also includes at least one mechanical fastener mechanically embedded into the first sandwich panel and the second sandwich panel. The at least one mechanical fastener at least extends through one skin layer and into the core material of the first sandwich panel and at least extends through one skin layer and into the core material of the second sandwich panel, and the at least one mechanical fastener is configured to accept insertion of an item. Methods of assembling the panel apparatus are also described.

Disclosed is an asymmetric toy module, which comprises a sheet-shaped square module body. The front surface of the module body is provided with a first combining element. At least one side surface of the module body is provided with a second combining element combined with the first combining element. The second combining elements on at least two opposite side surfaces are arranged asymmetrically. A combined toy set comprises a plurality of the asymmetric toy modules and a plurality of connecting modules, wherein the second combining element of one of the asymmetric toy modules is combined with the first combining element of the other asymmetric toy module, and the two asymmetric toy modules can also be connected together through the connecting modules. The asymmetric toy module achieves presentation levels and can form various exquisite assembled structures through a simple and rapid combination of the modules, thereby having high flexibility.

Disclosed is an asymmetric toy module, which comprises a sheet-shaped square module body. The front surface of the module body is provided with a first combining element. At least one side surface of the module body is provided with a second combining element combined with the first combining element. The second combining elements on at least two opposite side surfaces are arranged asymmetrically. A combined toy set comprises a plurality of the asymmetric toy modules and a plurality of connecting modules, wherein the second combining element of one of the asymmetric toy modules is combined with the first combining element of the other asymmetric toy module, and the two asymmetric toy modules can also be connected together through the connecting modules. The asymmetric toy module achieves presentation levels and can form various exquisite assembled structures through a simple and rapid combination of the modules, thereby having high flexibility.

Systems and methods are provided for an aircraft propulsor thrust reverser with a fastening system. The fastening system may include a male spool and a female spool configured to be threaded into the male spool. The male spool and the female spool may be coupled to a honeycomb structure and may evenly distribute force to the honeycomb structure to prevent plastic deformation of a honeycomb core of the honeycomb structure.