square bolt meaning in English
方螺栓
方头螺栓
Examples
- It can be classified by the latch function : single square bolt , single latch , double bolt , multi - bolt and key - operate latch with multi - bolt
（但亦可根据实际情况，安装在内门上使用）特别适合于残疾人士使用，其包括有：单方舌、单斜舌、双舌、多舌、多舌联动等。