Step Drill Bit - M35 4-20mm ST (Nano Coating) Atlas Tools side view
Atlas Tools 4-20 Step Drill Step Tip Expanded Design Side View with Illustrations
Step Drill Bit - M35 4-20mm ST (Nano Coating) Atlas Tools
Step Drill Bit - M35 4-20mm ST (Nano Coating) Atlas Tools
Step Drill Bit - M35 4-20mm ST (Nano Coating) Atlas Tools
Step Drill Bit - M35 4-20mm ST (Nano Coating) Atlas Tools
Atlas Tools

Step Drill Bit - M35 4-20mm ST (Nano Coating)

Built for clean cutting, reliable tool life and professional results.
$129.00 +GST
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Specifications

Precision cutting. Clean results.

This Step Tip Drill is built from premium M35 cobalt HSS and engineered for speed, control, and clean holes. The new step tip design self-centres and bites fast—so you can skip pilot holes and punch through sheet materials up to 2× quicker than standard drilling approaches.
Key benefits
No pilot holes needed — the step tip self-centres and starts clean, reducing wandering and rework.
Up to 2× quicker through sheet materials thanks to aggressive step engagement and efficient chip evacuation.
Multi-diameter drilling in one tool — clean, repeatable steps for fast sizing and consistent results.
Clean, controlled drilling — 135° split-point style start and double-spiral geometry help reduce grabbing and leave round holes.
New Nano Coating improves heat management and reduces friction for longer tool life at higher cutting speeds.
1/4" hex shank grips hard in chucks and is ideal for impact drivers and quick-change holders.
Works across stainless steel, mild steel, aluminium, copper plus plastics and timber—ideal for fabrication, electrical, and general workshop use.
Range 4–20mm Material M35 Cobalt HSS Coating Nano Coating Shank 1/4" Hex
Nano Coating for heat control and longer life
The advanced nano coating reduces friction and improves oxidation resistance, helping the bit run cooler and stay sharp longer—especially when drilling metal sheet repeatedly.
Less heat means less blueing, less edge breakdown, and cleaner holes across longer runs.
Performance and applications
Designed for fast, accurate sizing in sheet metal, stainless, aluminium, copper, plus plastics and timber. Ideal for electricians, fabricators, machinists, and workshop fit-outs where you want clean holes without swapping bits. The clearly defined steps make sizing easy, while the hex shank keeps the tool locked in for impact use and quick changes.

Why Atlas?

Longer tool life Built for durability and wear resistance.
Cleaner cut edges Engineered for best quality.
Best Carbide Better Results
Numerous Coatings Reduces friction, heat and promotes long tool life.

Customer Reviews

Real feedback from workshops, sign shops, fabricators and CNC operators using Atlas tooling.

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NEED HELP?

Speak with the Atlas Tools team with any questions.

CALL 0490 768 751 EMAIL info@atlastools.com.au SEND AN ENQUIRY We’ll get back to you fast.

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Frequently Asked Questions

Do we offer trade pricing or bulk discounts?

Yes. Please contact the team first before ordering. We will assess the quantity and may provide bulk discounts via a coupon or setting you up with an account.

Can I get technical advice before ordering?

Absolutely. Please feel free to call the team, who are more than happy to help, give guidance and point you in the right direction for your requirements.

What if I ordered the wrong bit?

If you wish to return, please see our return policy in the footer. There is a 15% restocking fee and freight is the customers responsibility.

How fast are orders dispatched?

Same day if before 11am, otherwise the next morning.
If your order is urgent, please add notes in the order and the team may be able to fast-track dispatch.

Why Trust our Tools

We use the very same tools we sell in our own CNC and Trade work, and have been for years. And trust, we have used and been frustrated with expensive sub-par tooling in the market like you have; and we want you to experience what its like to use amazing tools.

What if my Tool prematurely Snaps?

Likelyhood is that this is either due to incorrect speed/feed rates, the wrong diameter (size) being used, or too much material being removed in one pass.
Suggested fixes include: upgrading to a larger diameter tool, checking the material compatability and speed/feed recommendation on our product's page, or consulting our team on better recommendations.