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.
Answer is:
The working surface of the job and the bottom surface of cutting edges of chisel
Answer is:
0.8 mm
Explanation:
For conduit and other thin tubing, sheet metal work etc. use a 0.8 mm pitch.
