Mae llawer o enwau ar rhybedion dall heb ben, megis: rhybedion pen gwrth-suddo dwyochrog, rhybedion di-graidd, rhybedion dall, a rhybedion ceg dwbl.
https://www.yukerivet.com/news/do-countersunk-head-rivets-require-countersunk-holes/
Amser postio: Hydref 19-2022