... 楼宇自动化体系 Building Automation System BAS 六角头螺栓 Hexagonal Bolt 六角螺栓 Hex Bolt ...
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hexagonal bolt and nut 六角带螺帽螺栓
mild steel hexagonal bolt 软钢六角螺丝销
steel hexagonal bolt and nut 六角螺丝和螺母
inside hexagonal bolt 内六角螺栓
hexagonal head bolt 六角头螺栓
inner hexagonal bolt 内六角螺栓
hexagonal brass bolt 铜六角螺栓
hexagonal head tap bolt 六角头螺栓
If neither part is threaded a bolt must be used: this consists of a screw with a hexagonal head.
如果两者皆不的部份被穿线于门闩一定被用：这用一个六角形的头有螺丝钉。
The flat gasket and the spring gaskets are arranged on the bolt between the ante-receding expansion pipe and the hexagonal cap of the bolt.
平垫片和弹簧垫片，它们安装在防退膨胀管和螺栓六角帽之间的螺杆上；
The utility model discloses a force driven fixing structure for axle center which comprises gear or synchronous belt wheel, axle clamp and inner hexagonal head bolt.
一种力传动的轴心固定结构，包括齿轮或同步带轮、轴夹及内六角螺栓。
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