Metric Hole Enlarging HSS Step Drill Bit for Metal Sheet Tube Drilling

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$2.50 - $5.90 / Piece | 100 Piece/Pieces (Min. Order)
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$10.00 /Piece | 1 Piece (Min. Order) | Buy Samples
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Quick Details
Place of Origin:
Brand Name:
Model Number:
Hole Enlarging HSS STB
Center Drill Bit
Metal Drilling
Product Name:
Hole Enlarging HSS Step Drill Bit
HSS and HSS Cobalt
Straight Flute
Flute Number:
Three Flutes
Round Shank
Fully Ground
Point Angle:
135 Degree Split Point
Surface Finish:
Metal sheet Tube Drilling
Supply Ability
Supply Ability:
100000 Piece/Pieces per Month Hole Enlarging HSS Step Drill Bit
Packaging & Delivery
Packaging Details
1PC individually packed in plastic tube, then in carton.
Shanghai, Ningbo
Metal Tools Guide

Product Description
 Product Photos

 Product Description

 More Choice For You: Home Drill Bit  > HSS Drill Bit HSS Step Drill Bit > HSS Step Drill Bit

Procuct NameMetric Hole Enlarging HSS Step Drill Bit for Metal Sheet Tube Drilling
Size18-34mm   (18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 34mm)
MaterialHSS   (Cobalt M35 is Available)
Flute TypeStraight Flute   (Spiral Flute is Available)
Flute NumberThree Flutes   (Two Flutes, Single Flute are Available)
Shank Three Flats Shank   (Quick Change Hex Shank, Round ShankDouble R Shank are Available)
Surface FinishBlack & Bright   (TiN, Black & Amber, BrightCo-coated, Black Oxide, TiAIN are Available)
PackageOne Piece in Double Blister or Plastic Tube

1. Step drill bits are perfect for drilling and enlarging multiple-holes in thin sections of sheet metals, pipes, plexiglass, plastics, wood up to a thickness of 5mm.

2. 135° Split Point Tip: increases cutting speed with self-centering and the drills do not run off center.

3. A variety of hole diameters can be drilled using only one tool. 

4. The dimension of drilled hole is exact. 

5. Two Flute Design: provides longer life and better chip removal.

6. The Spiral Groove: creates better, less noise, less force has to be used.

7. Only for rotary use. 

 Product Sizes


We Can Produce All Sizes of Step Drill Bits as Your Requirement ,Please Contact Us If You Need.

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Company Introduction:

DANYANG TONGYU TOOLS is one of Professional Tools Suppliers with 18 Years Experience.

We Specialize in all kinds of Drill Bit and Hole Saw and Saw Blade.