方头螺栓(Square Head Bolts)，紧固件,螺丝,螺栓、螺柱、螺钉、螺母、自攻螺钉、木螺钉、垫圈、挡圈、销、铆钉、组合件和连接副、焊钉...
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square-head bolt 方头螺栓
flattened square head bolt 平顶方头螺栓
Square head bolt-product grade C 方头螺栓
black square head bolt 粗制方头螺栓
square head bolt with collar 带凸缘方头螺栓
flattened d square head bolt 平顶方头螺栓
square-head set-bolt 方头紧定螺栓
round head square-neck bolt 圆头方颈螺栓
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