雙層牙螺紋
墊圈
六角頭雙層牙鑽尾螺絲,配備鋒利鑽尖,具自攻功能,節省安裝時間和精力,被運用在建築、金屬與木材、金屬與金屬緊固、室外結構、電氣安裝等多種作業。
專業螺紋設計,展現最佳性能。
鎖定效果牢固、耐用,常用於屋頂安裝。
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