ISO 13584-511:2006规定了一个参考字典，用于表示各种ISO机械紧固件标准中描述的紧固件及其特性和取值范围。这些紧固件包括螺栓、螺钉、螺母、铆钉、销、垫圈等。 ISO 13584的参考词典系列部分规定了用于表示应用领域实体的本体，以及它们的描述性属性和值域。每个实体、属性或值域构成字典的一个条目，字典是特定本体的形式化和计算机可感知的表示。 它与计算机可识别和人类可读的定义以及计算机可识别的标识相关联。 字典条目的标识允许从任何应用程序中明确引用。字典条目的定义和标识包括通用字典模式中定义的EXPRESS实体数据类型的实例，或ISO 13584逻辑系列部分中定义的EXPRESS实体数据类型的扩展。

ISO 13584-511:2006 specifies a reference dictionary for representing fasteners with their properties and domains of values, as they are described in the various ISO mechanical fastener standards. These fasteners include bolts, screws, nuts, rivets, pins, washers etc. The reference dictionaries series of parts of ISO 13584 specify ontologies for representing the entities of an application domain, together with their descriptive properties and domains of values. Each entity, property or domain of values constitutes an entry of a dictionary that is the formal and computer sensible representation of the specified ontology. It is associated with a computer sensible and human readable definition, and with a computer sensible identification. Identification of a dictionary entry allows for unambiguous reference from any application. Definitions and identifications of dictionary entries consist of instances of the EXPRESS entity data types defined in the common dictionary schema, or in its extensions defined in the logical series of parts of ISO 13584.