Which term defines the acceptable amount of dimensional variation that will still allow an object to function correctly?

Which term defines the acceptable amount of dimensional variation that will still allow an object to function correctly?

• A. Nominal Size
• B. Tolerance
• C. Reference Dimension
• D. Datum Dimension

Answer: (B)

Tolerance defines the allowable variation in a dimension that still lets the part function correctly. Start with the nominal size as the target dimension, but the tolerance sets how far from that target you can deviate while still meeting the design requirements. For example, a hole sized at 5.00 mm with a tolerance of ±0.05 mm can range from 4.95 to 5.05 mm and still work in the assembly. A reference dimension is provided for information and does not control production. A datum dimension marks a base feature used to establish measurement origin or references for other dimensions, not the allowable size itself. So, the best term for the described concept is tolerance.

Tolerance defines the allowable variation in a dimension that still lets the part function correctly. Start with the nominal size as the target dimension, but the tolerance sets how far from that target you can deviate while still meeting the design requirements. For example, a hole sized at 5.00 mm with a tolerance of ±0.05 mm can range from 4.95 to 5.05 mm and still work in the assembly. A reference dimension is provided for information and does not control production. A datum dimension marks a base feature used to establish measurement origin or references for other dimensions, not the allowable size itself. So, the best term for the described concept is tolerance.