壳体上有标准的螺孔与阀门或支架相连。中间输出轴为一个标准的内八角。
There is standard bolt hole connecting with the valve or bracket. The output axis in the middle is a standard internal octagon.
不锈钢螺栓，螺柱型，六角形驱动套节。
也称为六角头螺丝或六角头螺栓。包括标准，钻孔头，左旋螺，自封式，军用规格螺栓。
Also known as Hex Head Screws or Hex Head Bolts. Includes Standard, Drilled Head, Left Hand Threaded, Self-Sealing, and Military Specification Cap Screws.
记忆的潭底，美人鱼在吹着动听的螺角；
嵌入式安装：直接使用4个M6的螺丝固定在灯具四角的安装螺孔固定灯具。
Embedded installation: direct use 4 screw in the M6 with the four corners of the lamps and lanterns of fixed screw holes installation lamps and lanterns.
嵌入式安装：直接使用4个M6的螺丝固定在灯具四角的安装螺孔固定灯具。
Embedded installation: direct use 4 screw in the M6 with the four corners of the lamps and lanterns of fixed screw holes installation lamps and lanterns.
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