Custom 2 Flute Straight Flute Carbide Step Drill for Aluminum Multi Diameter Hole Cutting High Speed CNC Machining OEM ODM Support

Our custom 2-flute straight flute carbide step drill is engineered specifically for high-efficiency aluminum machining, combining precision-ground tungsten carbide with an optimized straight flute design for superior chip evacuation. This specialized tool eliminates the need for multiple drill bit changes by creating multiple hole diameters in a single operation, significantly reducing cycle times in CNC machining centers and high-volume production environments.

• YG6X micro-grain tungsten carbide (0.5-0.8μm, 10% cobalt) for extended tool life
• No coating required - maximizes sharpness for aluminum and soft metals

• 2-flute geometry reduces cutting forces and prevents material adhesion
• High helix angle (30°-35°) for efficient chip ejection
• Polished flutes minimize friction and heat buildup

• Custom step configurations (e.g., 4mm -> 6mm -> 8mm in one tool)
• Precision-ground edges (±0.01mm diameter tolerance)
• Center-cutting capable for plunge drilling

• Stable at 15,000-30,000 RPM (diameter-dependent)
• Dry machining compatible (air blast recommended)

• Lightweight structural components (7075-T6)
• Cooling channel hole patterns

• EV battery housing drilling
• Aluminum casting machining

• Heat sink array drilling
• Server chassis ventilation holes

• Jig/fixture plate hole drilling
• Multi-diameter fastener holes

• Advanced grinding machines: All of our grinding machines are WALTER and SAACKE brands.
• Advanced inspection machines: We have ZOLLER, OMEGA, PG1000, etc. For inspecting each carbide tools.
• Fast feedback: we offer 24 hours online service
• Strict quality control system: We strictly adhere to a three-stage inspection process for each tool: Raw material inspection, Semi-finished product inspection after production, Final inspection after coating (pre-shipment check)