Industrial CNC Tapping Bits & Multipurpose Metalworking Drill Bits
Engineered for High-Speed Precision Threading Across Steel, Aluminum, Copper, and Ferrous Alloys
💡 Our CNC drilling and tapping machines support custom non-standard designs, machine color customization, and OEM branding. Start now to purchase and customize your own equipment, please contact us.
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Features
Chipless Cold Roll Forming: Forms high-strength internal threads by plastic deformation without producing metal swarf or chips.
30-50% Higher Pull-Out Strength: Preserves unbroken metal grain fibers within the extruded boss for superior torque resistance.
Wear-Resistant TiN/TiAlN Coating: Low-friction surface coating prevents material adhesion and extends tap life in tough metals.
Precision 6H Metric Tolerance: Consistently delivers smooth, accurate, burr-free thread profiles across high-volume runs.
In-Depth Engineering Description & Technical Overview
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Overview
DUOMI CNC presents high-performance tapping bits and multipurpose drill bits engineered specifically for demanding industrial metalworking operations. Built from premium Cobalt-infused High-Speed Steel (HSS-Co) and specialized carbide substrates, these tapping bits deliver superior wear resistance, heat tolerance, and extended tool life under continuous production environments.
Designed for integration with modern CNC drilling and tapping machines, our tool geometry ensures rapid chip evacuation, clean internal thread generation, and minimal torque resistance during high-speed production cycles.
Key Features & Benefits
- Dual-Function Efficiency: Combines drilling and precision thread tapping into optimized production sequences to reduce tooling changeover time by up to 35%.
- Superior Material Hardness: Optimized heat-treatment and TiAlN/TiN physical vapor deposition (PVD) coatings achieve surface hardness up to HRC 65–68.
- Enhanced Precision Specs: Achieves strict thread tolerances within 6H/ISO2 standards, maintaining consistent pitch accuracy across thousands of cycles.
- Optimized Chip Flute Geometry: Spiral flute and spiral point designs prevent chip clogging in both blind and through-hole tapping applications.
- Extensive Material Compatibility: Process tough metals including stainless steel, cast iron, structural steel, aluminum alloys, brass, copper, and zinc.
Technical Specifications & Machining Capabilities
| Parameter | Specification / Standard |
|---|---|
| Thread Type | Metric (M2–M30), UNC, UNF, BSP, NPT |
| Material Compatibility | Iron, Copper, Aluminum, Brass, Carbon Steel, Stainless Steel, Zinc |
| Positioning Tolerance | ±0.02mm |
| Max Operating Speed | Up to 3,000 RPM (Material Dependent) |
| Quality Standards | ISO 9001:2015, CE Certified |
| Coolant Compatibility | Internal coolant feed / Flood coolant supported |
Applications
Our metalworking tapping bits are widely utilized across demanding manufacturing sectors: - Automotive Subassemblies: High-volume engine block, gearbox, and bracket threading. - Aerospace Components: Precision structural alloy tapped holes compliant with stringent ISO standards. - Electronics & Enclosures: Precision tapping in aluminum heat sinks and copper busbars. - General Industrial Machinery: Fastener hole creation in heavy steel plate and iron castings.
OEM & Customization Support
Need custom non-standard thread pitches, extended reach shanks, or specialized coating formulations? DUOMI CNC offers full OEM branding, specialized custom tooling design, and tailored machinery coloring options to align with your production requirements.
Purchase & Delivery Guarantees
Direct Factory Assurance — Built, Tested, and Supported from Dongguan to Your Shop Floor
Runs on Your System
Standard GSK control (100% Fanuc G-code compatible) or optional Mitsubishi/Siemens. Direct CAD file import for code-free toolpath generation.
Factory Video FAT
Live drilling/tapping tests on your actual workpiece recorded before dispatch. Final 50% balance payment is paid only after your video approval.
40-Day Build & Rugged Crate
Guaranteed maximum 40-day manufacturing cycle. Sealed in anti-rust vacuum aluminum foil and bolted in fumigation-free timber crates (EXW/FOB/CIF).
Direct Engineer Care
Direct 1-on-1 WhatsApp group with your machine's build engineers, 12-month full warranty, and critical replacement parts dispatched via DHL within 24–48h.
Every DUOMI machine is built under a transparent 13-step factory production & responsibility chain.
Machining Samples
Real parts processed by our machines
