Question
Download Solution PDFA tapping hole should be ______ the tap size.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
- Tapping is the operation done for forming internal threads by means of the tool called tap.
- Before a tap is used for cutting internal threads, a hole is to be drilled.
- The diameter of the hole should be such that it should have sufficient material in the hole for the tap to cut the thread.
- For the threads, the size of the hole should be smaller than the tool i.e. tap.
- Tap drill size is given by:
- Tap drill size = Major diameter - Pitch
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