JB/T 6687-1993 12角法兰面螺母

J13中华人民共和圜机械行业标准JBT6687-199312角法兰面螺母1993-06-01发布199401-01实施中华人民共和国机械工业部发布中华人民共和国机械行业标准JBT6687-199312角法兰面螺母本标准适用于燃气轮机动力装置。d3.20.5×45标记:螺纹规格D=M16,材料30 CrMnSi表面处理为镀镉钝化的12角法兰面螺母的标记示例螺母JB/T6687-93-M16·30 CrMnSi-CdD螺纹规格DMIO9.407.0411413.43176311,2313.5121.42基本尺寸9.18172110.7916.7919.748.0010.0014.0019.0013.8218.79max1.4010.8212.8216.3220.7926.49重量(只)kg0.00210.00380.00660.01260.0262螺纹规格DM27M34×326.0029,0021.822592289232.92机械工业部1993-06-01批准1994-0101实施JBr6687-1993续表mm螺纹规格DM20M24M27M30M33×327.1233.9636.2046.46基本尺寸max23.2632.3134.3139.3141.3122.74max4.0030.0032.0036.0041.0029,793.004.505.505.50C2.755.205.2031.2041.3041.3054.0054.00d30.9541.0541.0553.70重量(只)kg0.05110.11650.19750.2637螺纹规格D136×3M39×3M42×3M45×339.0043.0046.0049002.9045.90489052.1656.7262.36基本尺寸max44.3149.3143.69486952.6356.6341.0046.0050.00S40.7545.7549.7554.70max6507.508.50min9.0063.5067.5071.5063.2071.20重量(只)kg0.30880.38490.55330.7548技术条件按JB/6688-1993的规定。附加说明本标准由南京燃气轮机研究所提出。本标准由南京燃气轮机研究所归口。本标准由南京汽轮电机厂、南京燃气轮机研究所、哈尔滨汽轮机厂、中国船舶工业总公司第703研究所起草。