General Studies · Machining Operations
After threading a hole by a tap, it was found that the crest of the thread was not formed completely. This defect is due to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Insufficient coolant supply
- 2Broken tip of cutting edge of the tap
- 3Hole size slightly more than the tap drill size✓
- 4Hole size slightly less than the tap drill size
Correct answer
Hole size slightly more than the tap drill size
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