coupler 螺絲帽

coupler
繁：螺絲帽
简：螺丝帽

路政署今日（20日）公布，再有1條鋼筋扭入螺絲帽後長度不達標，涉事地區為東西走廊C3區月台層板近東面連續牆底部。至今當局已檢測92枝鋼筋，當中32枝未達標，不達標鋼筋比例近35%。

【沙中線】累計32枝鋼筋不達標　再有螺絲帽無連接鋼筋　疑被剪（2019年1月19日）。HK 01，取自 https://www.hk01.com/社會新聞/284858/沙中線-累計32枝鋼筋不達標-再有螺絲帽無連接鋼筋-疑被剪

Three of them were found to be substandard, embedded only 28.54mm, 34.99mm, and 35.32mm into their couplers.

MTR Corporation reports shoddy-work findings on Sha Tin-Central Link to Hong Kong police. (2019, January 8). South China Morning Post. Retrieved from https://www.scmp.com/news/hong-kong/transport/article/2181168/mtr-corporation-reports-shoddy-work-findings-sha-tin