钢丝螺套符号说明:d =螺套公称直径P =牙距t2 = 螺套的名义长度W = 螺套圈数d1 = 螺套外径(安装前)DHC =安装螺套的底螺纹底径(大径)D1HC = 安装螺套的底螺纹中径B = 推荐钻孔直径(底径) t1 = 最小攻丝深度d =螺套公称直径P =牙距t2 = 螺套的名义长度W = 螺套圈数d1 = 螺套外径(安装前)DHC =安装螺套的底螺纹底径D1HC = 安装螺套的底螺纹中径B = 推荐钻孔直径t1 = 最小攻丝深度6
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