SUTTON TOOLS® D504-Series Step Drills are an industrial quality solution for users wanting to incrementally increase holes in a controlled manner. They are ideal for use in sheet metal, without the need for pre-driling.
They are suitable for use in sheet metal, aluminium, plastics and fibreglass.
During the drilling process, the next step deburrs the previously drilled hole.
Features

Fixed Drilling Steps - Incrementally increases hole size in a controlled manner
Spiral Flute - For reduced vibration and greater control through steps
Flat Shank - Three flats suits 3-jaw chuck
Made from M2 High Speed Steel (HSS) - Offering the best combination of strength, heat & wear resistance
Bright Finish - For general purpose applications, non-ferrous metals & plastics

Specifications

Steps: 9-Step
Diameters: 4-20 mm

4 mm
6 mm
8 mm
10 mm
12 mm
14 mm
16 mm
18 mm
20 mm

Cylindrical Flatted