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
Gauges are used to check the component
To check eccentricity
For accurate marking
For accurate measuring
For good appearance
