General Studies · Threading and Tapping
After threading a hole with a tap, it was found that the crest of the thread was not fully formed. This defect is most likely due to which of the following reasons?
- 1The hole size is slightly less than the tap drill size.
- 2The hole size is slightly more than the tap drill size.✓
- 3The cutting edge tip of the tap is broken.
- 4Insufficient coolant supply during operation.
Correct answer
The hole size is slightly more than the tap drill size.
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