oscillating weight bolt spring 自动锤栓簧

hand brake adjusting bolt spring 手闸调准螺栓簧

DOSER BOLT SPRING 计量给料器栓簧

connection bolt spring 连接螺栓弹簧

lock bolt spring ring 锁紧弹簧环

spring bolt 弹簧螺栓 ; 有斜端的自动弹簧锁 ; 弹簧中心螺栓 ; 弹簧活舌

spring centre bolt 弹簧中心螺栓

double action spring bolt 双面弹簧插销

spring shackle bolt 弹簧钩环螺栓 ; 簧钩螺栓