GB/T17880.4-1999附录A(提示的附录)120小沉头铆螺母质量表A1钢制120小沉头铆螺母的理论质量见表A1。表A1螺纹规格M3M4M5M6M8M10M10X1M12M121.5/,mm每1000件（密度按7.85kg/dm)的质量，kg7.50.7078.50.7639.0一1.1829.50.818一10.01.26211.01.3421.81212.01.92113.02.03013.53.75215.03.9815.58616.54.2105.922一一18.06.2588.7238.24619.59.1678.690一21.09.6119.13412.38312.04222.5一12.90112.56024.013.41913.078
