Discussion :: Manufacturing and Production Technology
- A taper tap has
|
A.
Its end tapered for about three or four threads |
|
B.
Its end tapered for about eight or ten threads |
|
C.
Full threads for the whole of its length |
|
D.
None of the above |
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Answer : Option B
Explanation :
The taper tap has 7 to 10 chamfered threads; the plug tap has 3 to 5 threads chamfered; while the bottoming tap has one thread chamfered. Hand taps have short square-ended shanks and are used for both machine and hand tapping. Taps are usually made either of carbon tool steel or high-speed steel.
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