Refined hexagon nut bolt 精制六角带帽螺栓
double nut bolt 双头带帽螺栓
bolt and nut 螺栓螺母 ; 带螺帽螺栓
wedge-nut bolt 楔壳式锚栓
Bolt nut 螺栓螺母 ; 螺栓螺帽
Nut And Bolt 螺母和螺栓 ; 螺母及螺栓
nut and bolt gauge 螺帽螺栓规 ; 螺母螺栓规
anchor bolt and nut 锚定螺栓螺母
bolt and nut making machine 螺栓螺母机 ; 制螺栓螺帽机
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