螺丝攻牙钻孔径和底孔对照表

螺丝攻牙钻孔径对照表公制粗螺纹美制粗螺纹规格底孔2级牙钻孔径规格(UNC)标准径2级牙钻孔径最大最小最大最小M1.0×0.250.750.7850.729NO.1-64(1.854)1.551.582

腾讯文库螺丝攻牙钻孔径和底孔对照表螺丝攻牙钻孔径和底孔对照表