Payung sirah narik kandang jaran kasebut ing keling wuta iku kandang jaran narik sirah babak utawa kandang jaran narik sirah countersunk?

Umbrella head pull studs uga disebut round head pull studs lan pan head pull studs.Ing pinggir kandang tarik sirah countersunk mudhun, lan kandang tarik sirah bunder munggah.

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