nuts and washers meaning in Chinese

螺母和垫圈

Hsieh yu butterfly valve is designed for installation with square screw , nut and washer
协羽的蝶阀安装设计是使用方形螺丝，螺母及华司所组成。
For assembling the bonnet and valve body , be sure that screws , nuts and washers shall be tightened up evenly
上盖与阀体的组装将4根螺丝，螺母及华司平均的锁紧。
Rotate the valve to [ close ] position , put in the valve and install screw , nut and washer , then , tighten them up with hand
将阀门转到关闭的位置，将阀门放入，安装螺丝，螺母及华司，然后用手锁紧。
After handle is reinstalled , just tighten up the nuts and washers with force . after gear box is reinstalled , just tighten up the screws and washers with even force
重新安装把手将螺母及华司用力锁紧即可。重新安装齿轮箱将跟螺丝及华司用力平均锁紧即可。