Muaj ntau lub npe rau cov rivets tsis muaj taub hau, xws li: ob sab countersunk taub hau rivets, coreless rivets, dig muag rivets, thiab ob lub qhov ncauj rivets.
https://www.yukerivet.com/news/do-countersunk-head-rivets-require-countersunk-holes/
Lub sijhawm tshaj tawm: Lub Kaum Hli-19-2022