范围根据ISO 898-1和ISO 898-2，本文件规定了平垫圈的机械和物理性能，平垫圈设计用于螺栓接头，与具有规定性能等级的螺栓、螺钉、螺柱和螺母结合使用。注1这些类型的垫圈也可与其他紧固件一起使用，例如形成其自身配合螺纹的螺钉。 符合本文件要求的垫圈在10°C至35°C的环境温度范围内进行评估。在高温和/或低温下，垫圈可能无法保持规定的机械和物理性能。注2:符合本文件要求的垫圈用于-50°C至+150°C范围内的应用。建议用户在确定适当选择或关键应用时，咨询经验丰富的紧固件专家，了解该范围以外的温度，以及+300°C的最高温度。 包含以下内容:BS EN ISO 898-3:2018

ScopeThis document specifies mechanical and physical properties of flat washers, designed to be used in bolted joints in combination with bolts, screws, studs and nuts with a specified property class in accordance with ISO 898-1 and ISO 898-2.NOTE 1These types of washers can also be used with other fasteners such as screws forming their own mating thread. Washers that conform to the requirements of this document are evaluated at an ambient temperature range of 10 °C to 35 °C. They might not retain the specified mechanical and physical properties at elevated temperatures and/or lower temperatures.NOTE 2Washers conforming to the requirements of this document are used in applications ranging from -50 °C to +150 °C. Users are advised to consult an experienced fastener expert for temperatures outside this range and up to a maximum temperature of +300 °C when determining appropriate choices, or for critical applications.Incorporates the following:BS EN ISO 898-3:2018