The connecting screw adopts a bone screw, and the head of the screw is outer-hexagonal, and the nut adopts an expanding hexagon nut or a hexagon nut.
所述连接螺钉采用骨螺钉，螺钉头为外六角。所述螺母采用膨胀六角螺母或六角螺母。
Flat-head inner hexagon screws instead the flat-heat cross-screw to increase the required installation and disassembly force.
原有平头十字螺丝改为平头内六角螺丝。以增强安装或拆卸止水栓时的力度需求。
Flat-head inner hexagon screws instead the flat-heat cross-screw to increase the required installation and disassembly force.
原有平头十字螺丝改为平头内六角螺丝。以增强安装或拆卸止水栓时的力度需求。
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