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304不锈钢细牙薄螺母六角细牙螺帽M8M10*1M12m14M16M18M20M22*1.5

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12.9级细牙内六角螺丝螺栓M10M12M14M16M18M20M22M24*1.25x1.5x2

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304不锈钢GB6173细牙薄螺母六角正反牙8M10*1M12M16M18M20M22*1.5

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