ThreadWhitworth

ThreadWhitworth captures British Standard Whitworth thread specifications. Alongside the shared thread attributes—label, quantity, diameter, spacing, handedness, and depth—it records the Whitworth size and, when specified, the tolerance class. Teams working with legacy British equipment or global supplier networks can use the structured data to select the correct fittings, taps, and gauges. A confidence score supports review of these older thread forms, and the explicit spacing values simplify conversions to modern standards.

Bases: Thread

Represents a Whitworth 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.WHITWORTH: 'WHITWORTH'>]` DEFAULT: `<ThreadType.WHITWORTH: 'WHITWORTH'>`
`whitworth_size`	The nominal size of the Whitworth thread. TYPE: `Decimal`
`whitworth_tolerance_class`	The tolerance class for the Whitworth thread. TYPE: `str \| None` DEFAULT: `None`

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

class ThreadWhitworth(Thread):
    """
    Represents a Whitworth thread.
    """

    thread_type: Literal[ThreadType.WHITWORTH] = ThreadType.WHITWORTH
    whitworth_size: Decimal = Field(
        ...,
        description="The nominal size of the Whitworth thread.",
    )
    whitworth_tolerance_class: Optional[str] = Field(
        None,
        description="The tolerance class for the Whitworth thread.",
    )