🔍 Key Concepts

• Compare the numerical diameters of the shaft and the hole shown in view A (.245 vs .250) • Understand the difference between a clearance fit (for movement) and an interference/force fit (for tight holding) • Know what a basic shaft fit means in machine-fitting terminology

💭 Think About

• Is the shaft in drawing A smaller or larger than the hole, and what does that imply about how freely it can move? • Which type of fit is normally used where a part (like a pin or shaft) must rotate or slide inside a bore without binding? • If the shaft and hole were exactly the same basic size, which option name would best describe that condition, and does drawing A actually show that?

✅ Before You Answer

• Verify whether drawing A shows clearance (hole bigger) or interference (shaft bigger) between the parts • Match that condition to the option that describes a fit that allows relative motion between shaft and hole • Confirm that options involving interference/force would require the shaft to be driven or pressed into the hole, which would not match the dimensions in A if there is clearance