Interpret the notation Ø12H7 on a hole.

Interpret the notation Ø12H7 on a hole.

• A. A hole diameter of 12 mm with a tight tolerance zone above nominal
• B. A hole diameter of 12 mm with a tolerance zone below nominal
• C. A hole diameter of 12 mm with no tolerance
• D. A hole diameter of 12 mm with an ISO H7 hole tolerance zone

Answer: (D)