The process of enlarging the end of an existing hole to accommodate the head of socket screw is called

52) The process of beveling the end of existing hole is called

Answer is:

Explanation:

Countersinking is an operation of bevelling the end of a drilled hole. The tool used is called a countersink.

The working surface of the job and the top surface of cutting edge of chisel

The working surface of the job and the bottom surface of cutting edges of chisel

The surface at right angle to the cutting edge of chisel and the working surface of the job

None of the above

Answer is:

Explanation:

Answer is:

Explanation:

For conduit and other thin tubing, sheet metal work etc. use a 0.8 mm pitch.

Answer is:

Explanation:

For soft materials such as bronze, brass, soft steel, cast iron, heavy angles etc. use a 1.8 mm pitch blade.