A2. 细牙系列 ( 见表 2)表 2 单位为毫米公称直径 螺距螺纹底孔公差等级小径公差值 公称 螺纹 公差 小径公差值直径 螺距 底孔 等级上偏差 下偏差 上偏差 5H6H—5H6H—5H6H—5H6H7H5H6H7H5H6H7H5H6H7H5H6H7H5H6H7H5H6H7H5H6H7H5H6H7H++—++—++—+++++++++++++++++++++++++++000000000000000000000000000000000000 5H6H7H5H6H7H5H6H7H5H6H7H5H6H7H5H6H7H5H6H7H5H6H7H5H6H7H5H6H7H5H6H7H5H6H7H++++++++++++++++++++++++++++++++++++000000000000000000000000000000000000表 2( 续) 单位为毫米公称直径 螺距螺纹底孔公差等级小径公差值 公称 螺纹 公差 小径公差值直径 螺距 底孔 等级上偏差 下偏差 上偏差
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