In a system with a subassembly and a housing surrounding the subassembly, wherein the housing has at least one housing shell and at least one fastening component that has a receiving component that receives a fastening element of the at least one housing shell, and has an adjustment component. The receiving component is arranged on the fastening component so that it can be moved in three different spatial directions by the adjustment component.

In a system with a subassembly and a housing surrounding the subassembly, wherein the housing has at least one housing shell and at least one fastening component that has a receiving component that receives a fastening element of the at least one housing shell, and has an adjustment component. The receiving component is arranged on the fastening component so that it can be moved in three different spatial directions by the adjustment component.

A pivot pin is configured to simplify and improve engagement and/or disengagement from its position as a pivot axle and/or connector, for example, in a lower receiver of a firearm. The mostly cylindrical main body of the pivot pin includes a longitudinal detent track featuring at least one recessed dimple and an aperture extending radially through the track for transfer of a detent spring and detent pin through the main body into the detent chamber of the lower receiver. A capping device may then encapsulate/control the position of the detent pin relative to the detent chamber, and relative to the aperture and track of the pivot pin, and/or help reduce the migration of water and or debris into the detent track and/or the firearm. The pivot pin and/or a capping device may be used on many different firearms and/or pins, for example, the AR15-style firearm and assembly pins.

A joint for mounting a component on a rocket, such as mounting a valve to a rocket body. The joint comprises a coiled roll pin and a shaft. The coiled roll pin comprises a rolled sheet defining an internal channel. The shaft extends through the internal channel and extends out both ends of the coiled roll pin. At each end of the shaft is disposed one or more compressible disc springs. Retaining rings or flat washers may compress the disc springs for axial restraint. The ends of the shaft may include a cover with an outer diameter larger than a joint hole. The joint compensates for vibrational loads, for example due to launch, and for dimensional changes, for example due to temperature gradients between two parts being connected by the joint. Some embodiments include no shaft, with the coiled roll pin axially secured by a cover or cover plate.

A joint for mounting a component on a rocket, such as mounting a valve to a rocket body. The joint comprises a coiled roll pin and a shaft. The coiled roll pin comprises a rolled sheet defining an internal channel. The shaft extends through the internal channel and extends out both ends of the coiled roll pin. At each end of the shaft is disposed one or more compressible disc springs. Retaining rings or flat washers may compress the disc springs for axial restraint. The ends of the shaft may include a cover with an outer diameter larger than a joint hole. The joint compensates for vibrational loads, for example due to launch, and for dimensional changes, for example due to temperature gradients between two parts being connected by the joint. Some embodiments include no shaft, with the coiled roll pin axially secured by a cover or cover plate.