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Questions and Answers
What does maximum material condition indicate for a hole?
What does maximum material condition indicate for a hole?
- It is at its largest diameter.
- It is at its smallest diameter. (correct)
- It allows for maximum clearance.
- It is at the average diameter.
Which statement about maximum material condition is true?
Which statement about maximum material condition is true?
- It modifies the meaning of geometric tolerances. (correct)
- It should be applied to all mechanical linkages.
- It is only relevant for surfaces and planes.
- It applies exclusively to all geometric tolerances.
In which scenario is it inappropriate to apply maximum material condition?
In which scenario is it inappropriate to apply maximum material condition?
- On a shaft with toleranced dimensions.
- Within a defined tolerance framework.
- In a dimensioned drawing of a gear. (correct)
- On a hole with specified interference fit. (correct)
How is maximum material condition represented in a tolerance frame?
How is maximum material condition represented in a tolerance frame?
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What does a maximum material tolerance of zero on a drawing signify?
What does a maximum material tolerance of zero on a drawing signify?
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Study Notes
Maximum Material Condition
- When a shaft or pin is at maximum material condition, it is at its largest diameter.
- When a hole is at maximum material condition, it is at its smallest diameter.
- It is indicated by the capital letter 'M' inside a circle, depicted inside the tolerance frame.
- It can sit next to the tolerance digit, the datum letter(s), or both.
- It only applies to straightness, the three attitude tolerances, and the three location tolerances.
- It can only be applied to features whose size is specified by toleranced dimensions incorporating an axis or a median plane.
- It is not applicable to features such as threaded holes, holes intended for an interference fit, or moving mechanical linkages and precision components such as bearings and gears.
- It provides additional clearance on the given geometric tolerance.
- A maximum material tolerance of zero means that the upper limit indicates the largest permissible effective assembly dimension.
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