Which of the following conditions is related to Clearance fit?

Concept:

Fit:

• Fit is the relationship between two parts to be assembled, resulting from the difference between their sizes, before assembly. 
• Fit refers to the mating of two mechanical components, manufactured parts are very frequently required to mate with one another.
• They may be designed to slide freely against one another or they may be designed to bind together into a single unit.
• The most common fit found in the machine shop is that of a shaft in a hole.
• Fit represents a degree of tightness or looseness between two mating parts to perform a definite function.

Following fits exist between the shaft and the hole

• Clearance fit:
  • Hole diameter is always bigger than the shaft diameter.
  • Both maximum and minimum clearance are always positive.
• Transition fit:
  • The hole diameter is close to the shaft diameter.
  • Maximum clearance is positive and minimum clearance is negative.
• Interference fit:
  • Hole diameter is always lesser than shaft diameter. 
  • Both maximum and minimum clearances are always negative.