The Axis element gives the nominal location of the start point and the nominal unit threaded feature axis vector. The direction of the axis vector points into the threaded feature.
<xs:element name="Axis" type="AxisType"><xs:annotation><xs:documentation>The Axis element gives the nominal location of the start point and the nominal unit threaded feature axis vector. The direction of the axis vector points into the threaded feature.</xs:documentation></xs:annotation></xs:element>
<xs:element name="Constructed" type="ThreadedFeatureConstructionMethodType" minOccurs="0"><xs:annotation><xs:documentation>The optional Constructed element signifies that the threaded feature is constructed and provides details of the construction method.</xs:documentation></xs:annotation></xs:element>
The id attribute is the QIF id of the feature, used for referencing.
Source
<xs:complexType name="ThreadedFeatureNominalType"><xs:annotation><xs:documentation>The ThreadedFeatureNominalType defines the threaded feature nominal information for an individual threaded feature.</xs:documentation></xs:annotation><xs:complexContent><xs:extension base="SpecifiedFeatureNominalBaseType"><xs:sequence><xs:element name="Axis" type="AxisType"><xs:annotation><xs:documentation>The Axis element gives the nominal location of the start point and the nominal unit threaded feature axis vector. The direction of the axis vector points into the threaded feature.</xs:documentation></xs:annotation></xs:element><xs:element name="Constructed" type="ThreadedFeatureConstructionMethodType" minOccurs="0"><xs:annotation><xs:documentation>The optional Constructed element signifies that the threaded feature is constructed and provides details of the construction method.</xs:documentation></xs:annotation></xs:element></xs:sequence></xs:extension></xs:complexContent></xs:complexType>