What is the term for the amount of overlap that one part has with another when assembled?

What is the term for the amount of overlap that one part has with another when assembled?

• A. Allowance
• B. Interference
• C. Auxillary View
• D. Section Lines

Answer: (B)

Interference is the amount of overlap between two parts when they are assembled. It happens when a mating feature, like a shaft and a hole, is sized so the parts must press together, causing a tight fit. The bigger the overlap, the stronger the hold. This differs from an allowance, which is the designed difference between parts before assembly to achieve a specific fit, and from drawing terms like auxiliary view or section lines, which relate to showing or cutting the part on paper rather than how parts fit together.

Interference is the amount of overlap between two parts when they are assembled. It happens when a mating feature, like a shaft and a hole, is sized so the parts must press together, causing a tight fit. The bigger the overlap, the stronger the hold. This differs from an allowance, which is the designed difference between parts before assembly to achieve a specific fit, and from drawing terms like auxiliary view or section lines, which relate to showing or cutting the part on paper rather than how parts fit together.