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: 4-12 mm

4.0 mm
5.0 mm
6.0 mm
7.0 mm
8.0 mm
9.0 mm
10.0 mm
11.0 mm
12.0 mm

Cylindrical Flatted