An aluminum blind fastener with a self-contained aluminum mandrel. The body of the rivet has three longitudinal slits extending from directly beneath the dome-shaped rivet head, down the shank but not completely to thehead of the mandrel. The bottom portion of the shank is not slit and has a slightly smaller body diameter where the rivet is snug against the mandrel within it.
When the rivet is installed, the body disrupts on the blind side in a way that forms three petals which extend away from the mandrel head. This makes this rivet ideal in out-of-round or oversized holes. The rivet requires less pulling force during installation than does a standard blind rivet which makes it useful in thin, soft or brittle materials. Each size has a relatively wide grip range and is corrosion resistant.