What is clearance?

What is clearance?

• A. The gap of space between two mating parts
• B. The total length of a part
• C. The thickness of a wall
• D. The difference between design and reality

Answer: (A)

Clearance is the intentional gap between two mating parts that allows them to fit together and move without rubbing. In manufacturing, this space accounts for how parts vary during production and how materials behave when assembled or exposed to different conditions, so parts don’t bind or seize. In additive manufacturing, designers include a small clearance to accommodate printer accuracy and material behavior, ensuring smooth assembly. The other options describe length, wall thickness, or the difference between designed and actual dimensions, none of which capture the idea of a deliberate space between parts.

Clearance is the intentional gap between two mating parts that allows them to fit together and move without rubbing. In manufacturing, this space accounts for how parts vary during production and how materials behave when assembled or exposed to different conditions, so parts don’t bind or seize. In additive manufacturing, designers include a small clearance to accommodate printer accuracy and material behavior, ensuring smooth assembly. The other options describe length, wall thickness, or the difference between designed and actual dimensions, none of which capture the idea of a deliberate space between parts.