ThreadSM

ThreadSM documents screw threads following the SM system. Alongside the shared thread attributes—label, quantity, diameter, spacing, handedness, and depth—the model records the SM size designation. Capturing SM threads distinctly helps global manufacturers ensure compatibility with regional fasteners and prevents confusion with ISO metric or UN threads when reading multilingual drawings. A confidence score makes it easier to prioritize review of rarely used thread forms, and the explicit spacing values can feed conversion tables when migrating to other standards.

Bases: Thread

Represents a screw machine (SM) 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.SM: 'SM'>]` DEFAULT: `<ThreadType.SM: 'SM'>`
`sm_size`	The size of the SM thread. TYPE: `Decimal`

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

class ThreadSM(Thread):
    """
    Represents a screw machine (SM) thread.
    """

    thread_type: Literal[ThreadType.SM] = ThreadType.SM
    sm_size: Decimal = Field(..., description="The size of the SM thread.")