Step Drill Bit, High Speed Steel, Black Oxide, 6 mm to 18 mm Size Range

Features

The shanks on these step drill bits have three flats that help prevent the bits from slipping in the drill chuck during drilling.
These cone-shaped bits have steps of increasing diameter marked along their cutting head.
As each bit is pushed into a piece of sheet metal or other thin material, each step on the bit widens the hole.
The bits also have a self-starting split point that prevents the bits from moving, or walking, when starting to drill, which eliminates the need for using a center drill to create a starter hole before drilling.

Number Hole Sizes / 7
Minimum Hole Size / 6 mm
Maximum Hole Size / 18 mm
Material – Machining / High Speed Steel
Drill Bit Sizes Included / 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm
Decimal Equivalent / 0.2362, 0.315, 0.3937, 0.4724, 0.5512, 0.6299, 0.7087
Measurement System / Metric
Step Increments / 2 mm
Shank Type – Machining / Straight with Three Flats
Shank Diameter / 3/8 in
Overall Length / 2 1/2 in
Maximum Drilling Depth / 3.5 mm
Finish – Machining / Black Oxide
Impact Rated / No
Primary Material Application / Aluminum, Brass, Copper, Laminate, Plastic, Steel, Wood
Series / UNIBIT
Sub Brand / Unibit