ThreadISOMetric

ThreadISOMetric captures ISO metric thread specifications, the most common fastener standard worldwide. Alongside the shared thread attributes—label, quantity, nominal diameter, spacing (coarse or fine pitch), handedness, and depth—it records tolerances for the major and pitch diameters of both female and male threads when specified. Structured ISO metric data helps ensure fasteners, taps, and gauges are selected correctly and enables automated validation against supplier catalogs or corporate design guidelines, while highlighting where custom tolerances depart from standard tables.

Bases: Thread

Represents an ISO Metric thread.

PARAMETER	DESCRIPTION
`reference_id`	Reference ID to identify the object. TYPE: `int`
`label`	A short description of the feature in a human-readable format. TYPE: `str`
`confidence`	Confidence in the feature extraction or interpretation. TYPE: `Confidence \| None`
`quantity`	The number of threads or instances. Must be non-negative. TYPE: `Decimal`
`diameter`	The diameter of the thread, including nominal size and tolerances. TYPE: `Size`
`spacing`	The spacing of the thread, defining the distance between thread crests. TYPE: `ThreadSpacing \| None`
`handedness`	The direction of the thread, such as LEFT or RIGHT. TYPE: `ThreadHandedness`
`depth`	The length of the threaded feature, including nominal size and tolerances. TYPE: `Depth \| None` DEFAULT: `None`
`thread_type`	TYPE: `Literal[<ThreadType.ISO_METRIC: 'ISO_METRIC'>]` DEFAULT: `<ThreadType.ISO_METRIC: 'ISO_METRIC'>`
`female_major_diameter_tolerance`	Tolerance for the major diameter of female threads. TYPE: `Tolerance \| None` DEFAULT: `None`
`female_pitch_diameter_tolerance`	Tolerance for the pitch diameter of female threads. TYPE: `Tolerance \| None` DEFAULT: `None`
`male_major_diameter_tolerance`	Tolerance for the major diameter of male threads. TYPE: `Tolerance \| None` DEFAULT: `None`
`male_pitch_diameter_tolerance`	Tolerance for the pitch diameter of male threads. TYPE: `Tolerance \| None` DEFAULT: `None`

Source code in werk24/models/v2/models.py

class ThreadISOMetric(Thread):
    """
    Represents an ISO Metric thread.
    """

    thread_type: Literal[ThreadType.ISO_METRIC] = ThreadType.ISO_METRIC
    female_major_diameter_tolerance: Optional[Tolerance] = Field(
        None,
        description="Tolerance for the major diameter of female threads.",
    )
    female_pitch_diameter_tolerance: Optional[Tolerance] = Field(
        None,
        description="Tolerance for the pitch diameter of female threads.",
    )
    male_major_diameter_tolerance: Optional[Tolerance] = Field(
        None,
        description="Tolerance for the major diameter of male threads.",
    )
    male_pitch_diameter_tolerance: Optional[Tolerance] = Field(
        None, description="Tolerance for the pitch diameter of male threads."
    )