Stud penarik sirah payung sing kasebut ing paku keling wuta iku stud penarik sirah bunder utawa stud penarik sirah countersunk?

Stud penarik endhas payung uga diarani stud penarik endhas bunder lan stud penarik endhas panci. Pinggiran stud penarik endhas countersunk mudhun, lan stud penarik endhas bunder munggah.

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