Countersunk rivets are particularly important for applications in which a raised head is not acceptable in the application.
These splined NeoSpeed rivets are said to “deliver the widest grip range and hole size tolerances of any non-structural rivet, while delivering shear, tensile and clamp performance better than or equal to traditional breakstem options”.
When used with appropriate installation tools, including a paper magazine of fasteners with a re-usable mandrel or pre-loaded rivets with disposable mandrel, assembly speeds can be improved by up to 400%, compared to traditional threaded or breakstem fasteners, added POP Avdel, a division of STANLEY Engineered Fastening.
The NeoSpeed repetition riveting system uses pull-through technology with a reusable mandrel or a preloaded disposable mandrel (except for countersunk and A4 stainless steel) for installation. The eight axial splines of trapezoidal cross-section are precisely defined in form to permit variable ‘radial crushing’ within the hole, according to its size. Unconstrained, these splines can expand radially up to 5.9 mm.
During the placing operation, the splines at the tail end expand first and capture the rear sheet. Hole-filling then occurs within the joint. Fr final clamp load, the mandrel head completes the ‘head forming’ action as it pulls through.
As a result, the rivet can fill out into bigger front sheet holes than rear, accommodate for misaligned holes, and potentially eliminate rattles and shear-slip.
NeoSpeed fasteners are applicable for high speed fastening and component assembly in all major industrial markets, including automotive, heavy ground transportation, electronics, appliance, HVAC, solar, recreational equipment and more.
