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SMART STEP Extra-Long Twist Drill Bit 4.2mm | HSS Material | 3-Flat Shank Design | by Wurth
The SMART STEP Extra-Long Twist Drill Bit 4.2mm is engineered for precision drilling in steel, cast iron, and wood. With a unique stepped drill bit tip geometry, it ensures clean, circular holes without tearing or splintering, eliminating the need for pre-drilling. Designed for use with standard drilling machines and cordless screwdrivers, this drill bit offers significantly faster drilling with less effort, making it ideal for skilled users seeking efficiency and quality.
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Product Name/Title: SMART STEP Extra-Long Twist Drill Bit 4.2mm | HSS Material | 3-Flat Shank Design | by Wurth
Brand: Wurth
SKU: 624960420
Alternatively Known As: SMART STEP drill bit, extra-long twist drill, HSS drill bit, precision drill bit, Wurth drill bit
Technical Specifications
- Diameter: 4.2 mm
- Length (l1): 220 mm
- Chip flute length (l2): 150 mm
- Drill tip length (l3): 2.9 mm
- Shank diameter: 4.2 mm
- Shank style: 3-face shank
- Material: High-Speed Steel (HSS)
- Surface: Multiple refined
- Suitable for tensile strength up to 1000 N/mm²
- Suitable for machine types: Drill, Cordless screwdrivers, Pedestal drilling machine
- Quality: ZEBRA-Premium
- Standard / drilling depth: DIN 1869 / 25xD
- Design: Overlong
- Self-centring: Yes
- Service life rating: 3 of 4 points
- Drilling speed rating: 4 of 4 points
- Bore hole quality rating: 4 of 4 points
- Versatility rating: 3 of 4 points
- Drilling behaviour rating: 4 of 4 points
- Suitable for drill rating: 4 of 4 points
- Suitable for cordless drills rating: 4 of 4 points
- Suitable for upright drilling machine rating: 4 of 4 points
- Dimensions (H x L x W): 220mm x 220mm x 4mm
- Weight: 0.1 kg
Key Features
- Extremely unequal pitch (EU+) for up to 50% longer service life and up to 15% faster drilling progress
- Precise, circular holes without tearing or splintering, eliminating the need for pre-drilling
- Extremely comfortable drilling with less vibration and up to 60% less torque required
- Significantly faster drilling with less effort compared to conventional extra-long HSS twist drill bits
- 3-flat shank from diameter 4 mm for no spinning in the drill chuck and optimal power transmission
- Patent-pending stepped drill bit tip geometry for unrivalled precision and service life
- Product packaging made from 100% PCR recycled plastic and is 100% recyclable
Professional Installation Requirements
- No professional installation required; suitable for use with standard drilling machines and cordless screwdrivers by skilled users.
Applications
- Suitable for drilling steel, cast iron, non-ferrous metals, wood, and hardwood
- Ideal for use with drills, cordless screwdrivers, and pedestal drilling machines
- Perfect for precise, circular holes in a wide range of materials including plastics and acrylics
Standards & Compliance
- Complies with AS/NZS 3123 – Industrial Plugs and Socket-Outlets
Environmental Benefits
- Product packaging made from 100% PCR recycled plastic from household waste
- Packaging is 100% recyclable, supporting waste reduction and sustainability
Warranty Information
Standard manufacturer warranty applies; please refer to Wurth's warranty policy for details.
Available Now
The Wurth Extra-Long SMART STEP Twist Drill Bit 4.2mm is available for immediate purchase, ideal for precision drilling in metal, wood, and plastics.
