Aya seueur nami pikeun paku keling buta tanpa sirah, sapertos: paku keling sirah countersunk dua sisi, paku keling tanpa inti, paku keling buta, sareng paku keling mulut ganda.
https://www.yukerivet.com/news/do-countersunk-head-rivets-require-countersunk-holes/
Waktos posting: 19-Okt-2022