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High-Performance Three-Point Flat Bottom Carbide Drills

31 Mar 2026Three-point · Flat bottom · Brad point · Coolant-through · Solid carbide · Three flute
High-performance three-point flat bottom solid carbide drill with coolant-thru — engineered for precision blind holes and counterboring

The Three-Point Flat Bottom Carbide Drill is engineered for applications that require high-accuracy hole positioning and a truly flat base. Unlike standard twist drills built around 118 or 135-degree point angles, this tool uses a unique 180-degree flat-bottom geometry combined with a centering point and outer spurs — making it highly suitable for blind-hole machining and counterboring.

Self-centering brad point: the precision-ground center point engages immediately at the first touch, preventing “walking” and drifting during the initial cut. That reduces the need for center drilling and improves positional consistency.

Technical Specifications (customizable)
Technical Specifications
FeatureSpecification
MaterialSolid Carbide (Tungsten Carbide)
Point Angle180° (Flat Bottom)
CoolantAvailable in solid or internal coolant-through versions
Tolerancem7 / h6 / h8 (Customizable)
ApplicationAlloy Steel, Stainless Steel, Cast Iron, Aluminum, and Composites
Self-Centering Brad Point
Precision-ground center point engages instantly to prevent walking and improve first-cut stability.
180° Flat Bottom Geometry
Produces a controlled, nearly perfect flat base for blind holes and counterboring (ideal for bolt seating).
Outer Spur Cutters
Twin outer spurs shear material at the perimeter before the main cutting edges for clean, burr-free entrances.
Premium Carbide Substrate
Micro-grain tungsten carbide for maximum hardness and strong wear resistance in repeated production cuts.
Advanced Coatings (AlTiN / TiAlN)
Selected for thermal stability and extended tool life in high-speed CNC environments.
Coolant-Through Options
Internal coolant improves chip evacuation and temperature control in demanding blind-hole and counterbore programs.

Outer cutting action and stable guidance work together to protect hole geometry. When combined with appropriate cutting parameters and a coolant strategy matched to your machine, the tool supports predictable hole flatness with reduced secondary finishing time.

If you need blind holes with a controlled flat base and stable positioning, send your hole diameter, depth or counterbore requirement, material and hardness, and the coolant pressure available on your machine. We will propose the best three-point flat-bottom drill configuration for your programme and inspection plan.

Custom tooling

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Send drawings, material, and target cycle time. Our application team typically responds within one business day with feasibility feedback and next steps.