ISO 10303-214:2010(E)
A Thread_feature is a feature that is specified by a ridge of uniform section on the form of a helix on the external or internal surface of a cylinder.
EXAMPLE Thread features may be used to design screws and bolts.
EXAMPLE Figure 73 shows a Thread_feature applied to a screw.
The data associated with a Thread_feature are the following:
The effective_thread_length specifies the length of the thread which is usable by the application.
The location_and_orientation specifies an Axis_placement whose location represents the start of the thread and whose z-axis points into the direction of the possible runout.
See thread_feature to axis_placement for the application assertion.
The maximum_thread_length specifies the usable thread length plus the runout.
The maximum_thread_length need not be specified for a particular Thread_feature.
The thread_definition specifies the Thread_specification that contains the parameters specifying the thread.
See thread_feature to thread_specification for the application assertion.
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