Web

Land

Body

Flutes

To avoid drill breaking

To avoid material wastage

To calculate sufficient cutting speed

To maintain sufficient material to tap

Production rate is increased

Measuring time is increased

Jigs and fixtures are needed

Special purpose machines are needed

Production rate is low

Cost of piece is reduced

Jigs and fixtures are needed

Gauges are used to check the component

To check eccentricity

For accurate marking

For accurate measuring

For good appearance