Aya loba ngaran pikeun paku keling buta tanpa hulu, kayaning: dua sisi countersunk sirah rivets, coreless rivets, buta rivets, jeung dua-mouthed rivets.
https://www.yukerivet.com/news/do-countersunk-head-rivets-require-countersunk-holes/
waktos pos: Oct-19-2022