Ko te titi kume upoko maru i whakahuatia i roto i te rivet matapo he titi kume upoko porowhita, he titi kume upoko totohu rānei?

Ko ngā pou kume upoko maru e kiia ana ko ngā pou kume upoko porowhita me ngā pou kume upoko paraharaha. Ko te taha o te pou kume upoko totohu kei raro, ko te pou kume upoko porowhita kei runga.

https://www.yukerivet.com/news/does-the-product-have-to-be-countersunk-to-evacuate-round-head-rivets/