Answer is:
118 Degree
Explanation:
For general purpose use point angle of twist drill is 118 Degree.
Answer is:
9.75 mm
Answer is:
Counter-boring
Explanation:
Counter-boring is the process of enlarging the end of an existing hole to accommodate the head of socket screw.
Answer is:
Counter-sinking
Explanation:
Countersinking is an operation of bevelling the end of a drilled hole. The tool used is called a countersink.
