Osg 650015911 Screw Machine Drill Bit 4.05mm Carbide

Product Description

The OSG 650015911 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding metalworking applications. Built to Series 6500 standards, it features a 4.05 mm diameter, a 140-degree point angle with R-thinned web geometry, and a 2-flute spiral configuration. The EgiAs coating reduces friction and heat buildup, extending tool life in abrasive and high-strength workpiece materials. At 80 mm overall length with a 25 mm flute length and a 6 mm straight-cylindrical shank, this bit is sized for screw machine and CNC drilling operations. Coolant-through capability supports chip evacuation and thermal control at depth.

This drill bit is suited for production drilling in steel, alloy steel, cast iron, titanium, and titanium alloys. The screw machine length profile keeps the tool rigid in close-clearance setups, making it a practical choice for automated machining centers, turret lathes, and CNC mill-turn equipment where stub-length rigidity and accurate hole diameter are critical. It is appropriate for shop environments where tool change frequency and hole quality consistency are priorities.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous and exotic-metal drilling
• EgiAs coating for reduced friction and extended tool life in high-strength materials
• 140-degree point angle with R-thinned web reduces thrust and improves centering
• Coolant-through design supports chip evacuation and temperature management at depth
• Tapered web configuration with regular spiral flutes for consistent chip flow
• Straight-cylindrical 6 mm shank compatible with standard collets and chucks

Compatibility

Designed for use in screw machines, CNC machining centers, and turret lathes accepting a 6 mm straight-cylindrical shank. Primary workpiece materials include steel, alloy steel, cast iron, titanium, and titanium alloys. Diameter falls within the 3.50 mm to 5.00 mm size range of the OSG Series 6500 product family.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the spindle fully stopped and the machine locked out per facility safety procedures. Verify collet or chuck bore matches the 6 mm shank diameter before seating the tool. When using coolant-through capability, confirm that coolant pressure and flow rate are within the machine tool specifications before running. Do not exceed the rated speed and feed parameters for the workpiece material being drilled.