ʻO ka umbrella poʻo huki stud i ʻōlelo ʻia ma ka rivet makapō he poʻe huki poʻo poʻo a i ʻole he countersunk poʻo huki stud?

Ua kapa ʻia ʻo umbrella head pull studs he poepoe poʻo huki studs a pan head pull studs.Aia i lalo ke kaʻe o ka pahu huki poʻo countersunk, a ʻo ka pahu huki poʻo poepoe i luna.

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