ISO 2320:2008 有效力矩型钢螺母 机械和工作性能

标准编号：ISO 2320:2008

中文名称：有效力矩型钢螺母 机械和工作性能

英文名称：Prevailing torque type steel nuts — Mechanical and performance properties

发布日期：2008-11

标准范围

ISO 2320:2008规定了在+10°C至+35°C的环境温度范围内进行试验时，主要扭矩型钢螺母的机械和性能特性。它包括一次试验，以确定主要扭矩特性（性能特性）和/或扭矩/夹紧力特性。ISO 2320:2008适用于有效扭矩全金属型螺母和有效扭矩非金属嵌件型螺母:a）符合ISO 68-1的三角形ISO螺纹；b） 符合ISO 261和ISO 262的直径/节距组合；c） 粗螺距螺纹M3至M39，机械性能符合ISO 898-2；d） 细牙螺纹M8×1至M39×3，机械性能符合ISO 898-6；e） 在-50°C至+150°C的温度范围内，适用于主要扭矩的全金属螺母；f） 在-50°C至+120°C的温度范围内，适用于主要扭矩非金属嵌件式螺母。ISO 2320:2008不适用于:1）当需要咨询经验丰富的紧固件材料专家，以确定适用于给定应用的适当选择时，e）类螺母的有效扭矩范围超出-50°C至+150°C的全金属型螺母；2） 安装在f型螺母上），当在温度极限或接近温度极限时，会降低有效扭矩非金属嵌件型螺母的有效扭矩能力，并且可能需要使用足够的非金属材料-对于有效扭矩非金属嵌件型螺母，有必要咨询经验丰富的紧固件材料专家，以确定有效扭矩范围-50°C至+120°C以外的温度针对给定应用程序的适当选择。

ISO 2320:2008 specifies the mechanical and performance properties for prevailing torque type steel nuts when tested at an ambient temperature range of +10 °C to +35 °C. It includes a single test to determine the prevailing torque properties (performance properties) and/or the torque/clamp force properties.ISO 2320:2008 applies to prevailing torque all metal type nuts and prevailing torque non-metallic insert type nuts: a) with triangular ISO thread according to ISO 68-1; b) with diameter/pitch combination according to ISO 261 and ISO 262; c) with coarse pitch thread M3 to M39 and mechanical properties according to ISO 898-2; d) with fine pitch thread M8×1 to M39×3 and mechanical properties according to ISO 898-6; e) within the temperature range of -50 °C to +150 °C for prevailing torque all metal type nuts; f) within the temperature range of -50 °C to +120 °C for prevailing torque non-metallic insert type nuts.ISO 2320:2008 does not apply: 1) to nuts of type e), outside the range -50 °C to +150 °C for prevailing torque all metal type nuts, when it is necessary to consult an experienced fastener materials expert to determine appropriate choices for a given application; 2) to nuts of type f), when use at or near the temperature limits can reduce the prevailing torque capability of prevailing torque non-metallic insert type nuts and can require the use of an adequate non-metallic material — it is necessary to consult an experienced fastener materials expert for temperatures outside the range -50 °C to +120 °C for prevailing torque non-metallic insert type nuts to determine appropriate choices for a given application.

标准预览图