Final answer:
Dimensions and tolerances are specified to apply in a free state condition unless noted otherwise, ensuring that parts will fit and function properly in real-world applications.
Step-by-step explanation:
Unless otherwise specified, all dimensions and tolerances apply in a free state condition. This means that the material or the part must meet the dimensional and tolerance specifications when it is not subjected to any external forces or constraints such as clamping forces, applied loads, or thermal stress.
This standard is important because it ensures that parts will fit together and function properly in their intended application, without being influenced by any temporary state that might arise during the manufacturing or measuring process.