Sgs 66012 Straight-flute Drill Bit 3.50mm Carbide Altin

Product Description

The SGS 66012 is a straight-flute drill bit engineered for precision drilling in ferrous and hardened materials. Built from micrograin solid carbide and coated with AlTiN (aluminum titanium nitride), it delivers extended tool life in high-heat, abrasive applications. The bit measures 3.50 mm in diameter with a 140-degree point angle, a 20.00 mm flute length, and a 52.00 mm overall length. The straight-flute geometry, combined with web thinning, reduces thrust force and improves chip evacuation in short-hole drilling operations. This bit is suited for machinists, tool-and-die technicians, and production drilling professionals working on tight-tolerance components.

The SGS 66012 is designed for drilling cast iron, steel, and hardened steel, including hardened materials classified under secondary workpiece material designations. Its 3xD flute-to-diameter ratio and 15.00 mm maximum drilling depth make it appropriate for shallow, high-precision holes in manufacturing and maintenance machining environments. The right-hand cutting direction and standard point type align with conventional CNC machining centers and benchtop drill press setups. It conforms to DIN 6539 standards, making it suitable for use in shops that specify metric tooling to European norms.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance in hard materials
• AlTiN coating extends tool life at elevated cutting temperatures
• 140-degree point angle reduces walking and improves entry accuracy on flat and curved surfaces
• Web-thinned design lowers thrust requirements and improves chip flow
• Right-hand cut, straight-flute geometry compatible with standard CNC and manual drill setups
• Conforms to DIN 6539 for consistent metric dimensional standards

Compatibility

Designed as an OEM-style replacement and production drilling tool for applications in cast iron, steel, and hardened steel workpieces requiring a 3.50 mm straight-flute carbide drill conforming to DIN 6539.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tooling technicians familiar with carbide tooling requirements. Ensure the machine spindle and collet or chuck are clean and properly torqued before seating the shank. Solid carbide tooling is brittle — avoid side loading, interrupted cuts without appropriate feed adjustments, or re-chucking a visibly chipped bit. Confirm spindle speed and feed rate are appropriate for the workpiece material and bit diameter before beginning the drilling cycle.