countersink head bolt的意思|示意

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沉头螺栓

埋头螺栓 ... 埋头锥孔 countersink 埋头螺栓 countersink head bolt 埋头螺钉 countersink head screw ...

静心螺栓 ... 静心锥孔 countersink 静心螺栓 countersink head bolt 静心螺丝 countersink head screw ...

埋头 ... 埋头锥孔 countersink 埋头螺栓 countersink head bolt 埋头螺丝 countersink head screw ...