The tap drill is always smaller than the tap, to leave sufficient material for the tap to produce ______ per cent of thread.
a) 25
b) 30
c) 40
d) 50
e) 75
Answer: E
The tap drill is always smaller than the tap, to leave sufficient material for the tap to produce ______ per cent of thread.
a) 25
b) 30
c) 40
d) 50
e) 75
Answer: E