BS ISO 9618:2016规定了六角开槽（槽形）螺母的尺寸 带MJ螺纹的标准对边高度，等级:450 MPa/120°C，450 MPa/235°C， 600兆帕/425摄氏度，900兆帕/235摄氏度，900兆帕/315摄氏度，900兆帕/650摄氏度，1100兆帕/235摄氏度， 1 100 MPa/730°C和1 250 MPa/600°C。注1 450 MPa、600 MPa、900 MPa、1 100 MPa和1 250 MPa对应于最小拉伸应力 当用螺栓测试时，螺母能够在环境温度下承受，而不会断裂或开裂 力量级别更高。注2 120℃、235℃、425℃、315℃、650℃、730℃和600℃对应最高温度 经环境试验后，螺母能够承受，而不会永久改变其原始特性 温度已经恢复。最高温度由表面处理决定。 这些螺母拟与符合ISO 1234的开口销一起使用。本国际标准适用于航空航天产品标准的编制。交叉引用:ISO 1234ISO 5855？2ISO 8788购买本文件时可获得的所有当前修订均包含在购买本文件中。

BS ISO 9618:2016 specifies the dimensions of hexagon slotted (castellated) nuts, reduced height, normal across flats, with MJ threads, of classifications: 450 MPa/120 °C, 450 MPa/235 °C, 600 MPa/425 °C, 900 MPa/235 °C, 900 MPa/315 °C, 900 MPa/650 °C, 1 100 MPa/235 °C, 1 100 MPa/730 °C, and 1 250 MPa/600 °C.NOTE 1 450 MPa, 600 MPa, 900 MPa, 1 100 MPa and 1 250 MPa corresponds to the minimum tensile stress which the nut is able to withstand at ambient temperature without breaking or cracking when tested with a bolt of a higher strength class.NOTE 2 120 °C, 235 °C, 425 °C, 315 °C, 650 °C, 730 °C and 600 °C corresponds to the maximum temperature that the nut is able to withstand without permanent alteration to its original characteristics, after ambient temperature has been restored. The maximum temperature is conditioned by the surface treatment.These nuts are intended to be used with split pins in conformity with ISO 1234.This International Standard is applicable for the compilation of aerospace product standards.Cross References:ISO 1234ISO 5855?2ISO 8788All current amendments available at time of purchase are included with the purchase of this document.