久久精品91佛爷大战美容院,人人爽人人爽人人片av免费,美女隐私图片黄www,日韩欧美亚洲香蕉七次郎,亚洲精品国产自在久久老牛

TOP-LOCK^® washers’ advantages

◆Prevent bolt loosening caused by vibrations ,avoid some related problems caused by fasteners loose.

◆Do not need special installation tool, easy to install and disassemble .

◆Locking function is not affected by lubricating oil.

◆Temperature variation will not make fasteners loose .

◆Excellent durability.

◆Reusable without loss of performance .

◆Can use high/low load locking fixed components

◆Without Cr6 with surface treatment, there would be no hydrogen embrittlement dangerous situation.

◆Two big helical surface relative agglutination in pairs, the purpose is easy to install the locking system.