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Home > Wood Drill Bits > Four Spiral Flute HSS M35 Cobalt Step Drill Bit Set for Aluminum, Wood, Metal, Stainless Steel
Four Spiral Flute HSS M35 Cobalt Step Drill Bit Set for Aluminum, Wood, Metal, Stainless Steel
Four Spiral Flute HSS M35 Cobalt Step Drill Bit Set for Aluminum, Wood, Metal, Stainless Steel
Four Spiral Flute HSS M35 Cobalt Step Drill Bit Set for Aluminum, Wood, Metal, Stainless Steel
Four Spiral Flute HSS M35 Cobalt Step Drill Bit Set for Aluminum, Wood, Metal, Stainless Steel
Four Spiral Flute HSS M35 Cobalt Step Drill Bit Set for Aluminum, Wood, Metal, Stainless Steel
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Four Spiral Flute HSS M35 Cobalt Step Drill Bit Set for Aluminum, Wood, Metal, Stainless Steel
Four Spiral Flute HSS M35 Cobalt Step Drill Bit Set for Aluminum, Wood, Metal, Stainless Steel
Four Spiral Flute HSS M35 Cobalt Step Drill Bit Set for Aluminum, Wood, Metal, Stainless Steel
Four Spiral Flute HSS M35 Cobalt Step Drill Bit Set for Aluminum, Wood, Metal, Stainless Steel
Four Spiral Flute HSS M35 Cobalt Step Drill Bit Set for Aluminum, Wood, Metal, Stainless Steel

Four Spiral Flute HSS M35 Cobalt Step Drill Bit Set for Aluminum, Wood, Metal, Stainless Steel

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Product Description

⚙️ Basic Info.
Model NO.
PFT101
Type
Core Drill Bit
Material
High Speed Steel
Usage
Metal Drilling
Product Name
HSS Step Drill Bit Set
Manufacturing Process
Fully Ground
Shank
Hex / Round / Triangle
Surface Treatment
Tialn Coated
Point Degree
135 Degree Split Point
Application
Steel, Brass, Copper, Aluminium, Wood and Plastic
HS Code
8207509000
HSS M35 Cobalt Step Drill Bit
Step Drill Bit Set
Drill Bit Details
📝 Product Description
Name Four Spiral Flute HSS M35 Cobalt Step Drill Bits Set for Aluminum, Wood, Metal, Stainless Steel
Size Range • 1/4"-3/4": (9 Steps) 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4"
• 1/8"-1/2": (13 Steps) 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2"
• 3/16"-7/8": (12 Steps) 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8"
Material HSS M35 Cobalt
Flute Type Spiral Flute (Four Flutes)
Shank Type Hex Shank (1/4")
Finish Black & White
Key Features:
✔ Strong wear resistance, heat resistance, and corrosion resistance. Lower operating temperature greatly improves service life.
✔ Versatile usage: drill new holes or enlarge existing ones without changing bits.
✔ Four-flute helical design provides smaller cutting angle and lower pressure for smoother cuts and easy chip removal.
✔ Universal 1/4" (6.35mm) hex handle fits securely on lithium drills, hand drills, and bench drills.
Usage Application
Step Drill Construction
📦 Step Drill Bit Set Gallery
Product Set 1
Product Set 2
🔍 Detail View
Close up Detail
❓ Frequently Asked Questions
Q1: What materials can these step drill bits work on?
These bits are ideal for sheet metal, stainless steel, aluminum, copper, wood, and plastic materials.
Q2: Why is the M35 Cobalt material important?
M35 Cobalt HSS provides superior heat and wear resistance, making it suitable for drilling harder materials like stainless steel compared to standard HSS bits.
Q3: What are the benefits of the four-flute design?
The four-flute helical design ensures a smoother cutting experience, reduces cutting pressure, and allows for faster chip evacuation.
Q4: Will these bits fit my cordless drill?
Yes, the 1/4" (6.35mm) hex shank is designed to fit most standard lithium drills, hand drills, and bench drills securely.
Q5: Can I use these bits to enlarge existing holes?
Absolutely. Step drill bits are perfect for both creating new holes and enlarging existing ones without needing to swap out different sized bits.
Q6: What is the point degree of these bits?
These bits feature a 135-degree split point, which helps prevent walking and ensures faster starting on hard surfaces.

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