Osg 8608166 Screw Machine Drill Bit 1.66 Mm Ticn

Product Description

The OSG 8608166 is a screw machine length drill bit engineered for high-performance drilling in demanding industrial and machining applications. Built from XPM powdered metal and finished with a TiCN (Titanium Carbonitride) coating, this bit delivers extended tool life and resistance to heat and wear. The 130-degree point angle and X-thinned web geometry reduce thrust force and improve chip evacuation. At 42.00 mm overall length with a 10.00 mm flute length, it is sized for stub-length precision work in tight setups. Installation is performed by machinists and toolroom technicians on CNC or manual drill presses and machining centers.

This drill bit is designed for use in screw machine operations, CNC machining centers, and manual drill press setups requiring tight tolerance stub-length drilling. It targets a 3xD flute-to-diameter ratio, making it well suited for shallow, accurate holes in hard and abrasive workpiece materials. The straight cylindrical shank seats cleanly in standard collets and chucks sized for a 3.00 mm shank diameter.

Key Features

• XPM powdered metal construction for high hardness and heat resistance
• TiCN coating extends tool life in ferrous and high-temperature alloys
• 130-degree point angle with R-thinned and X-thinned web reduces entry thrust
• Right-hand cutting, regular spiral flute for consistent chip removal
• Screw machine (stub) length at 42.00 mm OAL for rigid, accurate positioning
• Diameter tolerance of +0 to -0.014 mm for consistent hole sizing

Compatibility

Designed for drilling steel, cast iron, high-temperature alloys, and hardened materials. Suitable for use in standard collets and drill chucks accepting a 3.00 mm straight cylindrical shank. Part of the OSG Series 1900 screw machine drill line.

Installation Notes

This drill bit is installed and operated by machinists and toolroom professionals using CNC machining centers, turret lathes, or manual drill presses. Secure the straight shank firmly in a collet or keyless chuck before operation and verify runout is within acceptable limits before cutting. Always power down and lock out the machine before changing tooling. Do not exceed the recommended feed and speed parameters for the workpiece material to avoid premature coating wear or tip fracture.