Exam 18: Parallelism Tolerance

Location tolerances, such as position and profile of a surface, cannot limit parallelism deviation.

What are the four areas of requirements a parallelism tolerance must satisfy in order to be a standard-compliant specification (legal)?

Where parallelism is applied to a diameter at MMC, the tolerance zone is a virtual condition boundary.

List the three conditions that apply where parallelism is applied to a diameter at RFS.

For a parallelism tolerance, the default tolerance zone is ____________________ parallel planes.

What are the two common tolerance zones for a parallelism tolerance?

Where parallelism is intended to apply to the high points of the surface only, the ____________________ plane modifier is specified in the tolerance portion of the feature control frame.

A parallelism tolerance may be applied to a planar surface or a feature of size.

What are three common real-world applications of a parallelism tolerance on a drawing?

Since parallelism (the perfect condition) cannot be produced, it is necessary to specify some allowance for parallelism deviation.

What are the two shortcomings of using Rule #1 and the size dimension to control parallelism?

Where a parallelism tolerance is applied to a feature of size, the feature control frame is placed ____________________ or beside the size dimension.

Since parallelism is an orientation tolerance, it controls the location of the toleranced feature.

When a parallelism tolerance (MMC) is applied to a feature of size, the deviation is often verified by passing the feature of size through a(n) ____________________ condition boundary.

Where parallelism is applied to a planar surface, the tolerance zone is parallel to the primary ____________________ plane.