最新螺纹紧固件拧紧力矩教学文案.doc

《最新螺纹紧固件拧紧力矩教学文案.doc》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、中华人民共和国汽车行业标准汽车用螺纹紧固件拧紧力矩规范本标准适用于碳素钢或合金钢制造的螺纹直径为6-20㎜、6级精度以上的汽车用一般螺栓、螺钉、螺柱和螺母的紧固。其螺纹尺寸及公差按GB193-1981《普通螺纹直径与螺距系列》、GB196-1981《普通螺纹基本尺寸》和GB197-1981《普通螺纹公差与配合》标准的规范；螺栓、螺钉、螺柱和螺母机械性能，螺栓、螺钉、螺柱与螺母被拧入基体件强度级别的组合按GB3098-1982《紧固件机械性能》标准的规定。本标准不适用于承受交变载荷或加润滑剂装配的螺栓、螺钉、螺柱和螺母的紧固件，以及紧定螺钉和类似的不规定抗拉强度的螺纹紧固件。1

2、、汽车用螺纹紧固件拧紧力矩1.1机械性能为4.6级的螺栓、螺钉和螺柱，其拧紧力矩按表1的规定。螺纹直径（㎜）螺距（㎜）拧紧扭矩标准值最大值最小值N·mkgf·mN·mkgf·mN·mkgf·m614.00.45.50.62.50.381.258.00.811.01.15.00.5818.50.911.51.25.50.6101.519.72.024.72.514.31.5101.2520.82.125.82.616.71.710121.82.226.52.717.01.7121.7537.33.843.34.428.02.9121.538.53.945.04.629.03.0

3、121.2539.64.048.04.930.03.114261.26.275.07.646.84.8141.574.67.692.09.456.05.716295.09.7115.011.773.07.4161.5105.010.7133.013.676.07.7182.5142.914.6178.018.1107.410.9181.5157.616.1190.019.4124.512.7202.5188.019.2230.023.4135.013.8201.5203.720.8243.024.8149.015.2国家机械工业局1999-03-15批准实施1.2机械性能为5

4、.6级的螺栓、螺钉和螺柱，其拧紧力矩按表2规定。螺纹直径（㎜）螺距（㎜）拧紧扭矩标准值最大值最小值N·mkgf·mN·mkgf·mN·mkgf·m614.50.56.00.63.00.381.2510.61.114.01.47.00.78111.01.115.01.58.00.8101.526.02.733.03.419.01.9101.2528.02.934.03.522.02.210129.03.035.03.623.02.3121.7545.04.653.05.437.03.8121.547.04.856.05.738.03.9121.2550.05.160.06.14

5、0.04.114281.08.395.09.762.06.3141.590.09.2105.010.768.06.9162124.012.6150.015.398.010.0161.5132.013.5160.016.3101.010.3182.5190.019.4220.022.4161.016.4181.5200.020.4230.023.4165.016.8202.5231.623.6272.027.7190.019.4201.5246.625.1285.029.1197.020.1302793.681950.197637.165.01.3机械性能为8.8级的螺栓、螺钉

6、和螺柱，其拧紧力矩按表3规定。螺纹直径（㎜）螺距（㎜）拧紧扭矩标准值最大值最小值N·mkgf·mN·mkgf·mN·mkgf·m6190.9121.260.681.25232.3262.7161.681252.5282.9171.7101.5596.0757.6373.8101.25636.4798.1454.6101646.5808.2464.7121.75959.711111.3737.4121.5979.911311.5757.6121.259910.111511.7788.014216016.318518.912212.4141.518018.320520.91461

7、4.916221521.924525.018218.6161.524024.527027.519920.3182.526827.329830.422923.3181.531632.234635.328729.3202.543043.847047.938939.7201.544044.948048.939640.41.4机械性能为10.9级的螺栓和螺柱，其拧紧力矩按表4规定。螺纹直径（㎜）螺距（㎜）拧紧扭矩标准值最大值最小值N·mkgf·mN·mkgf·mN·mkgf·m101.5747.5909.252