When would you apply angularity tolerances?

When would you apply angularity tolerances?

• A. To control the diameter of a hole
• B. To control the angle of a feature relative to a datum
• C. To locate a feature in a pattern
• D. To specify material condition

Answer: (B)

Angularity tolerances constrain the tilt of a feature by controlling the angle between that feature (a surface or an axis) and a datum reference. This is used when the critical requirement is how the feature is angled relative to a datum, not its size or location in a pattern. So you apply angularity when you need the feature’s angle to stay within a specified range with respect to a datum plane or datum axis—ensuring the part sits at the correct orientation for mating or function. For example, if a mating surface must meet another part at a precise angle, an angularity tolerance binds that tilt to the datum reference. Size, location in a pattern, or material condition address different aspects (diameter, position, or MMC/LMC effects), so they wouldn’t capture the needed angular relationship.

Angularity tolerances constrain the tilt of a feature by controlling the angle between that feature (a surface or an axis) and a datum reference. This is used when the critical requirement is how the feature is angled relative to a datum, not its size or location in a pattern. So you apply angularity when you need the feature’s angle to stay within a specified range with respect to a datum plane or datum axis—ensuring the part sits at the correct orientation for mating or function. For example, if a mating surface must meet another part at a precise angle, an angularity tolerance binds that tilt to the datum reference. Size, location in a pattern, or material condition address different aspects (diameter, position, or MMC/LMC effects), so they wouldn’t capture the needed angular relationship.