Agapfunyika k'umutwe w'umuhengeri kavuzwe muri rivet idafite aho ibogamiye ni agapfunyika k'umutwe kizengurutse cyangwa agapfunyika k'umutwe gashyirwa ku ruhande?

Udupira two gukurura umutwe w'umutuku (umbrella head pull studs) na two twitwa utupira two gukurura umutwe w'umutuku n'udupira two gukurura umutwe w'ipan. Impande y'agapira ko gukurura umutwe kari hasi, naho agapira ko gukurura umutwe w'umutuku kari hejuru.

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