Xi jfisser blind rivet jumper?

Ir-ras tal-qbiż tal-irbattar irbattut għomja: minħabba li l-irbattut ma jkebbebx ir-ras tad-dwiefer, se jikkawża r-ras tal-qbiż tal-irbattuti.

https://www.yukerivet.com/news/the-core-of-the-blind-rivet-is-not-completely-pulled-out-what-is-the-reason-for-the-fracture/