Osg 11569415 Screw Machine Drill Bit 0.5 in Hss

Product Description

The OSG 11569415 is a screw machine length drill bit designed for high-performance drilling in metalworking and fabrication applications. Built from high speed steel (HSS) with a coated finish, this bit features a 0.5-inch (12.70 mm) diameter, a 120-degree faceted drill point, and a web-thinned, tapered web configuration that reduces thrust and improves chip clearance. The straight-cylindrical shank seats securely in standard drill chucks. With two spiral flutes and a regular spiral type, it delivers consistent chip evacuation during right-hand cutting operations. This bit is suited for machinists, fabricators, and maintenance technicians working with production drilling setups.

The 11569415 is engineered for use on steel, alloy steel, aluminum, aluminum alloy, and aluminum silicate workpieces. Its screw machine length (stub) profile provides added rigidity compared to jobber-length bits, making it well-suited for drill press, CNC, and turret lathe applications where shorter reach and reduced deflection improve hole accuracy. The overall length is 108.00 mm (approximately 4.25 inches) with a flute length of 51.00 mm (approximately 2.0 inches) and a shank diameter of 12.00 mm (approximately 0.47 inches). The 3xD flute-to-diameter ratio supports controlled chip flow in moderate-depth holes.

Key Features

• 0.5-inch (12.70 mm) cutting diameter with a +0 to -0.027 mm tolerance for precise hole sizing
• 120-degree faceted drill point reduces walking and improves entry on flat stock
• Web-thinned tapered web lowers cutting thrust and extends tool life
• High speed steel construction with coated finish for wear resistance on ferrous and non-ferrous materials
• Straight-cylindrical shank fits standard drill chucks and collet holders
• Right-hand spiral flute design ensures compatibility with conventional drilling equipment

Compatibility

The OSG 11569415 is rated for use on steel, alloy steel, aluminum, aluminum alloy, and aluminum silicate workpieces. It belongs to OSG Series 1150 and fits drill chucks accepting a 12.00 mm straight-cylindrical shank.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician. Secure the shank fully in the drill chuck or collet before operation, and confirm the spindle is at a complete stop before making any tool changes. Use cutting fluid or coolant appropriate for the workpiece material to manage heat, as this bit does not support coolant-through delivery. Follow applicable machine guarding requirements and shop safety standards when operating drilling equipment.