HSS Titanium Step Drill Bit 4-32/4-42mm – Wood & Metal

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

Tackle any drilling job with confidence using the SLADE High-Speed Steel (HSS) Step Drill Bit. Whether you're cutting holes in sheet metal, wood, plastic, brass, or aluminium, this titanium-coated step drill delivers clean, precise, perfectly round holes every time — with minimal friction and heat buildup. Available in 4-32mm and 4-42mm step ranges, this is the only drill bit you'll need for multi-sized hole work.

Made in Mainland China.

Why Choose This Step Drill Bit?

• Premium HSS 4241 High-Speed Steel — Heat-treated for exceptional hardness and long-lasting durability, maintaining a sharp cutting edge even under demanding conditions.
• Titanium Coating (TiN) — Reduces friction, minimises heat generation, and dramatically extends bit life compared to uncoated bits.
• Straight Flute / Two-Flute Design — Drives faster, smoother, and cleaner cuts. Each step is clearly engraved with its diameter so you always know exactly what size hole you're drilling.
• 3-Sided (Tri-Flat) Shank — Prevents the bit from slipping in the drill chuck, giving you complete control and accuracy.
• Highly Polished Finish — Reduces friction during drilling and makes chip evacuation effortless.
• Versatile Use — Cuts through steel, brass, aluminium, copper, wood, PVC, plastic, and more. Perfect for electricians, metalworkers, woodworkers, and DIY enthusiasts.

Specifications

Ideal For

• Sheet metal fabrication and electrical panel work
• Woodworking and carpentry projects
• Plumbing and pipe fitting installations
• DIY home improvement and renovation
• Automotive bodywork and repair

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For guidance on safe tool use and drill bit safety practices, visit the OSHA Hand & Power Tools Safety Resource.

Frequently Asked Questions

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

A: The SLADE HSS step drill bit is designed to cut through a wide range of materials including mild steel, stainless steel, brass, aluminium, copper, wood, MDF, plastic, and PVC. The titanium (TiN) coating reduces friction and heat, making it suitable for both soft and moderately hard materials.

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

A: Both versions use the same high-quality HSS 4241 construction and titanium coating. The 4-32mm version covers hole sizes from 4mm up to 32mm in steps, while the 4-42mm version extends the range up to 42mm — ideal for larger hole-cutting applications such as electrical conduit fittings or larger pipe holes.

Q: Will this step drill bit fit in a standard drill chuck?

A: Yes. The 3-sided (tri-flat) shank is compatible with most standard keyless and keyed drill chucks. The flat sides prevent the bit from rotating or slipping in the chuck, ensuring safer and more precise drilling.

Q: How do I extend the life of my titanium-coated step drill bit?

A: To maximise the lifespan of your step drill bit, use a moderate drilling speed (lower RPM for harder metals), apply cutting oil when drilling through metal, avoid excessive downward pressure, and clean the bit after each use. Avoid re-sharpening the titanium-coated edge, as this removes the protective coating.