| Attribute | Type | Defined By |
|---|
| GlobalId | IfcGloballyUniqueId (STRING) | IfcRoot |
| OwnerHistory | IfcOwnerHistory (ENTITY) | IfcRoot |
| Name | IfcLabel (STRING) | IfcRoot |
| Description | IfcText (STRING) | IfcRoot |
| ApplicableOccurrence | IfcIdentifier (STRING) | IfcTypeObject |
| HasPropertySets | SET OF IfcPropertySetDefinition (ENTITY) | IfcTypeObject |
| RepresentationMaps | LIST OF IfcRepresentationMap (ENTITY) | IfcTypeProduct |
| TAG | IfcLabel (STRING) | IfcTypeProduct |
| ElementType | IfcLabel (STRING) | IfcElementType |
| PredefinedType | IfcMechanicalFastenerTypeEnum (ENUM) | IfcMechanicalFastenerType |
| NominalDiameter | IfcPositiveLengthMeasure (REAL) | IfcMechanicalFastenerType |
| NominalLength | IfcPositiveLengthMeasure (REAL) | IfcMechanicalFastenerType |