GESIPA Special blind rivets (grooved) There are numerous applications that require the use of special blind rivets. For this reason GESIPA® has come up with some variations to meet these requirements. Grooved blind rivets are suitable for riveting pocket holes in soft materials. They are used in the furniture industry, for interior construction, in the wood and plastics processing industry, in car body construction and lots more. Important: Before processing grooved blind rivets, the borehole diameter must be determined in trials and the minimim borehole depth must be observed.