1/2" Reduced Shank HSS Twist Drill Bits (12–39 mm, for Steel & Metal)
Introduction
These 1/2" reduced-shank twist drill bits are heavy-duty cutting tools designed for drilling in a wide range of metals and materials. Available in two high-speed steel grades—cobalt alloyed HSS-6542 and standard HSS-4341—they offer durability, precision, and reliable performance for both light and demanding drilling tasks. The reduced shank design allows larger-diameter bits to fit standard 1/2" chucks, making them versatile for use in hand drills, drill presses, and other power tools.
Specifications
HSS-6542 (Cobalt Alloyed)
- Type: 1/2" reduced shank twist drill
- Material: HSS-6542 with cobalt
- Drilling Diameter Range: 12–39 mm
- Shank Diameter:
- Ø10 mm (for drilling diameter: 12–15 mm)
- Ø12.7 mm (for drilling diameter: 15.5–39 mm)
- Best For: Stainless steel, iron, copper, aluminum alloy, wood, plastic, etc.
- Not Suitable For: Concrete, brick walls
HSS-4341
- Type: 1/2" reduced shank twist drill
- Material: HSS-4341
- Drilling Diameter Range: 12–39 mm
- Shank Diameter:
- Ø10 mm (for drilling diameter: 12 mm)
- Ø12.5 mm (for drilling diameter: >12 mm)
- Best For: Thin metals (iron, copper, aluminum alloy, steel), wood, etc.
- Not Suitable For: Concrete, brick walls
Key Features
- Premium High-Speed Steel Construction: Made from HSS-6542 (with cobalt) or HSS-4341, providing high hardness, heat resistance, and wear resistance for long service life.
- Reduced Shank Design: The 1/2" reduced shank allows larger drill diameters to fit standard chucks, expanding compatibility with common power tools.
- Precision Flute Geometry: The twist flute design efficiently removes chips, reducing clogging and ensuring smooth, clean holes.
- Durable & Consistent Performance: Engineered to withstand heavy use, these bits deliver accurate, repeatable cuts across a variety of materials.
Note: When drilling, use water or coolant to prevent the bit from overheating and burning out.
Applications
- Metalworking: Ideal for drilling holes in stainless steel, iron, steel, copper, aluminum, and other common metals.
- General Fabrication: Suitable for use in workshops, blacksmithing, and metalworking projects where reliable metal drilling is required.
- DIY & Woodworking: Works well for drilling in wood, plastic, and composite materials, making it versatile for multi-material projects.
- Industrial Maintenance: Used in repair and maintenance tasks for equipment, machinery, and structural components made of metal.
- Not Recommended For: Masonry materials such as concrete or brick walls.
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Exact dimensions can also be viewed in the photo gallery.
- You can find more products in different material, type, color, sizes, quantity and shapes in our shop If you have special needs, please contact us, we can customize according to your needs!
Note:
- Please allow minor errors due to manual measurement. Thank you for your comprehension.
- Monitors are not calibrated, the element color shown in the photos may differ slightly from the real object. Please take the real one as standard.
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