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Smart Step Drill Bit 4.0mm Unequal Pitch Twist Oxide Finish Wurth

BRAND: Wurth
SKU: 626910400
$19.40 List price: $24.40
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Wurth Smart Step Drill Bit Unequal Pitch Twist Oxide features 4.0mm dia, 75mm length and 43mm. Precise, circular holes without tearing or splintering.
Technical Specifications
  • Diameter: 4.0 mm
  • Length (l1): 75 mm
  • Chip flute length (l2): 43 mm
  • Drill tip length (l3): 2.9 mm
  • Shank diameter: 4.0 mm
  • Shank style: 3-face shank
  • Material: HSCo (High-Speed Cobalt Steel)
  • Surface finish: Oxide finish
  • Suitable for tensile strength up to 1300 N/mm²
  • Standard / drilling depth: DIN 338 / 5xD
  • Self-centring: Yes
  • Quality rating: ZEBRA-Premium
  • Service life rating: 3 of 4 points
  • Drilling speed rating: 4 of 4 points
  • Bore hole quality rating: 4 of 4 points
  • Versatility rating: 4 of 4 points
  • Drilling behaviour rating: 4 of 4 points
  • Suitable for drills, cordless drills, and upright drilling machines
  • Dimensions (H x L x W): 75mm x 75mm x 4mm
  • Weight: 0.1 kg
Key Features
  • Patent-pending stepped drill bit tip geometry with extremely uneven pitch for faster, more comfortable drilling
  • Up to 50% longer service life and up to 15% faster drilling progress
  • Significantly less vibration and up to 60% less torque required
  • Precise, circular holes without tearing or splintering
  • Burr-free hole exit and no rattling or catching in thin-walled materials
  • 3-flat shank from 4 mm diameter prevents spinning in drill chuck
  • Optimal power transmission protects drill chuck from damage
  • Product packaging made from 100% PCR recycled plastic and is 100% recyclable
Professional Installation Requirements
  • No professional installation required; suitable for use with standard drill chucks and cordless screwdrivers by professionals and DIY users.
Applications
  • Suitable for drilling steel, cast iron, stainless steel, titanium, non-ferrous metals, wood, and hardwood
  • Ideal for use with drills, cordless screwdrivers, and pedestal drilling machines
  • Perfect for precise, hand-held drilling up to 20 mm diameter without pre-drilling
  • Suitable for drilling out rivets and stud bolts
  • Ideal for drilling in round materials or pipes requiring precision and centring
Standards & Compliance
  • Complies with AS/NZS 3000 – Wiring Rules (Electrical Installation)
Environmental Benefits
  • Reduced energy consumption by up to 20% during drilling
  • Longer service life reduces waste and replacement frequency
  • Packaging made from 100% recycled plastic and fully recyclable
Warranty Information

Wurth provides warranty coverage against manufacturing defects; please refer to Wurth's official warranty policy for details.

Available Now

The Wurth SMART STEP Twist Drill Bit 4.0 mm is available for immediate purchase, ideal for machining and precision drilling applications.

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