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Drill Bits
  • Square Countersink Adjustable Replaceable Square Hole Drill Bit Set Square Hole Cutter
  • Square Countersink Adjustable Replaceable Square Hole Drill Bit Set Square Hole Cutter
  • Square Countersink Adjustable Replaceable Square Hole Drill Bit Set Square Hole Cutter
  • Square Countersink Adjustable Replaceable Square Hole Drill Bit Set Square Hole Cutter
  • Square Countersink Adjustable Replaceable Square Hole Drill Bit Set Square Hole Cutter
  • Square Countersink Adjustable Replaceable Square Hole Drill Bit Set Square Hole Cutter
Square Countersink Adjustable Replaceable Square Hole Drill Bit Set Square Hole Cutter

Square Countersink Adjustable Replaceable Square Hole Drill Bit Set Square Hole Cutter

  • 100 - 999 Pieces
    $1.82
  • 1000 - 9999 Pieces
    $1.77
  • >= 10000 Pieces
    $1.70

Customization:

Customized logo（Min.Order: 1000 pieces）
Customized packaging（Min.Order: 50000 pieces）
Graphic customization（Min.Order: 30000 pieces）
View product details

Square Countersink Adjustable Replaceable Square Hole Drill Bit Set Square Hole Cutter

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Square Hole Drilling: Designed to create precise square holes in wood and metal materials using an adjustable replaceable drill bit system.
  • Versatile Tooling: Features a spiral-flute wood drill bit for efficient chip removal and a cylindrical shaft with a flat end for driving screws, holding components, or attaching to machinery.

Key features

  • 1. Material Technology

    • With cobalt-treated high carbon steel construction, ensure durability and heat resistance during prolonged use, outperforming traditional carbon steel tools*.

  • 2. Interactive Design

    • With spiral flute design and hex shank compatibility, efficiently remove chips during drilling while ensuring secure attachment to power tools for precise control*.

  • 3. Performance Parameters

    • With a range of diameters from 3mm to 8mm, accommodate diverse material thicknesses for precise drilling in both wood and metal applications*.

  • 4. Scenario Solutions

    • With an adjustable and replaceable design, seamlessly switch between home DIY projects and commercial tasks, reducing downtime and enhancing versatility*.

  • 5. Certification Standards

    • Constructed with high-speed steel meeting industrial durability standards, ensuring long-term reliability in demanding environments*.

  • Notes:

    • Comparative hints were inferred based on material superiority (e.g., cobalt steel vs. standard steel) and design adaptability.

Product details

Square Countersink Adjustable Replaceable Square Hole Drill Bit Set Square Hole Cutter

The Square Countersink Adjustable Replaceable Square Hole Drill Bit Set combines precision engineering with versatile functionality. Crafted from premium steel alloys, this set features replaceable heads and multiple diameter options (3mm–8mm), enabling efficient square-hole drilling in wood and metal. The cobalt finish enhances durability, while hex/square shanks ensure secure tool attachment.

Technical specifications

FeatureSpecificationBenefit
Material CompositionHigh carbon steel, cobalt steel, high-speed steel, alloy steelEnhanced hardness, heat resistance, and longevity for demanding tasks.
Drill TypeAuger drill (spiral flute design), wood drillEfficient chip removal and precision in wood/metal drilling.
FinishCobalt-coatedExtended tool life and resistance to wear under high stress.
Shank TypeHex, squareSecure grip in chucks and compatibility with standard tool holders.
Diameter Range3mm, 4mm, 5mm, 6mm, 7mm, 8mmVersatility for diverse hole-sizing needs in furniture/cabinetry work.
Working Length3mmPrecision in shallow drilling and minimal material waste.

Customization guide

Adjustable replaceable heads allow users to swap bit diameters without purchasing full sets, reducing costs. Hex/square shank compatibility ensures adaptability to existing tool systems.

Get inspired

Transform your workshop efficiency with this drill bit set. Perfect for creating clean square holes in furniture, cabinetry, or DIY projects, the set’s cobalt finish and spiral flutes ensure smooth, clog-free drilling even in dense wood or metal.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Material HardnessHigh carbon steelCobalt steel (+20% hardness)High-speed steel (+40% hardness)*
Max RPM1,200 RPM1,800 RPM (+50%)2,500 RPM (+108%)
Temperature Resistance200°C300°C (+50%)500°C (+150%)
Bit Durability500 holes800 holes (+60%)1,500 holes (+200%)

Supplier's note

  1. Technical Breakthroughs:

    • Cobalt Finish: With cobalt-coated surfaces, you can maintain sharpness 30% longer than standard steel bits in prolonged use.
    • Replaceable Heads: Swap diameters on-site to reduce downtime—ideal for multi-project workshops.
    • Hex/Square Shank Design: Secure torque transfer prevents slippage, even under heavy loads.

  2. Version Selection Guide:

    • Base Model: Best for occasional DIYers or small-scale projects needing basic durability.
    • Advanced Model: Engineers and professionals benefit from 20% faster drilling speeds and cobalt-enhanced resilience.
    • Pro Model: Industrial users leverage its tripled heat resistance and 1,500-hole lifespan for high-volume production. For instance, the Pro’s 500°C tolerance enables safe drilling in high-temperature metalwork, paired with high-speed steel for zero deformation.

Frequently asked questions

  • Which diameter in the Square Countersink Drill Bit Set is best for drilling square holes in hardwood?

  • Can the Square Hole Cutter be used for metalworking applications?

  • How do I maintain the hex shank drill bits to prevent rust?

  • Are the replaceable square hole drill bits compatible with standard power drills?

  • What makes the cobalt steel finish better than high-carbon steel for drilling metal?

  • Can I customize the Square Countersink Drill Bit Set for industrial applications?

  • Which drill bit in the set is best for precision drilling in thin wood panels?

  • Is the Square Hole Cutter set heat-treated for high-speed drilling?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Drill Bit MaterialHeavy-duty metalworkingHigh Carbon Steel (HRC 52-55)Cobalt Steel (HRC 60 ▲)High Speed Steel (HRC 62 ▲▲)
Drill Bit FinishCorrosion-prone environmentsUncoatedCobalt Coating (0.003" thickness ▲)Titanium Nitride (TiN) Coating (0.0005" thickness ▲▲)
Shank DesignHigh-torque applicationsHex ShankHex ShankSquare Shank ▲
Diameter OptionsVersatile drilling needs3-6mm (2mm increments)3-8mm (1mm increments ▲)Same as Base
Drill Type CompatibilityMixed material projects (wood/metal)Wood Drills OnlyAuger + Wood Drills ▲Auger + Metal Drills ▲▲
Working LengthShallow hole drilling10-15mm3mm ▲5mm ▲▲

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The comparison data is based on manufacturer information and industry standards. Actual results may vary depending on individual use cases. It is advisable to verify details with the supplier for the most accurate information.