HSS Titanium Step Drill Bit 4–42mm | Metal Wood Plastic

HSS Titanium Coated Step Drill Bit – 4–32mm / 4–42mm

Take your drilling game to the next level with this professional-grade High Speed Steel (HSS) Titanium Coated Step Drill Bit. Whether you're working on metal fabrication, woodworking, or DIY home projects, this cone-style step drill bit delivers clean, perfectly round holes across a wide range of materials — all in one versatile tool.

Made in Mainland China.

Key Features

• Titanium Coating: Reduces friction and heat buildup during drilling, extending the life of the bit significantly compared to uncoated alternatives.
• High Speed Steel (HSS) Construction: Heat-treated and highly polished for maximum hardness, durability, and cutting performance.
• Multi-Material Use: Cuts clean holes in steel, brass, aluminum, copper, plastic, wood, and more — one bit replaces a whole set.
• Two-Flute Spiral Groove Design: Drives faster, smoother, and cleaner cuts while efficiently removing chips and debris from the work surface.
• 3-Sided (Triangle) Shank: Anti-slip design prevents the bit from rotating in the drill chuck, ensuring safe and precise drilling every time.
• Clearly Labeled Steps: Each step is engraved with the diameter size, so you always know exactly what size hole you're drilling — no measuring needed.
• 99mm Length: Offers excellent reach and leverage for a variety of applications.
• Size Options: Available in 4–32mm and 4–42mm step ranges to match your project needs.

Specifications

What You Get

1 × HSS Titanium Coated Step Drill Bit (your choice of 4–32mm or 4–42mm size range)

Perfect For

• Electricians drilling conduit holes in panels and junction boxes
• Metalworkers creating clean holes in sheet metal
• Woodworkers drilling stepped or chamfered holes
• DIY enthusiasts tackling home improvement and repair projects
• Automotive and fabrication work

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For more guidance on safe power tool use and drill bit selection, visit the U.S. Occupational Safety & Health Administration (OSHA) or check out this helpful overview on drilling and cutting tools at CDC/NIOSH Power Tools Safety.

Frequently Asked Questions

Q: What materials can this HSS titanium step drill bit cut through?

A: This step drill bit is designed to cut through a wide variety of materials including steel, brass, aluminum, copper, plastic, and wood. The high speed steel (HSS) construction combined with the titanium coating makes it suitable for both soft and hard materials with ease.

Q: What is the difference between the 4–32mm and 4–42mm versions?

A: Both versions start at a 4mm minimum hole diameter. The 4–32mm bit drills holes up to 32mm in diameter, while the 4–42mm version extends to 42mm — ideal for larger holes in sheet metal, electrical panels, or wood panels where bigger openings are required.

Q: Does the titanium coating wear off quickly?

A: Titanium nitride (TiN) coating is a hard, durable surface treatment that significantly reduces friction and heat during drilling, which actually helps the coating — and the bit itself — last longer. Using appropriate drill speeds and cutting oil on metal applications will further extend its lifespan.

Q: Will this bit fit my standard power drill?

A: Yes. The 3-sided (triangle) shank is compatible with most standard 3-jaw drill chucks found on corded and cordless power drills. The anti-slip shank design also ensures the bit stays firmly locked in the chuck during operation.

Q: Do I need cutting oil when using this step drill bit on metal?

A: While the titanium coating reduces heat, using a few drops of cutting oil or lubricant when drilling through hard metals like steel is always recommended. It further reduces heat, extends bit life, and produces cleaner, smoother holes.