Osg 215-1520 Screw Machine Drill Bit 0.152in Carbide

Product Description

The OSG 215-1520 is a solid carbide screw machine length drill bit designed for precision drilling in demanding industrial and machining applications. Built to Series 215 specifications, this bit features a 135-degree split point angle with web thinning for reduced thrust and accurate self-centering on contact. The bright uncoated finish and slow spiral flute geometry suit it for general-purpose drilling across a wide range of workpiece materials. With a straight-cylindrical shank and a compact 2-1/16 inch overall length, it fits standard drill chucks and CNC toolholders. Machinists, tool-and-die makers, and production drilling operations are the primary users of this style of drill.

This bit is rated for use in steel, alloy steel, stainless steel, cast iron, aluminum silicate, nickel alloy, titanium, and titanium alloy workpieces. The 5xD flute-to-diameter ratio provides adequate chip evacuation in short-depth holes typical of screw machine work. The tapered web configuration adds rigidity at the cutting tip, which is especially useful when drilling harder ferrous and exotic alloys at production feed rates.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• 135-degree standard point angle with web thinning for reduced entry thrust
• Slow spiral flute geometry optimized for steel and difficult-to-machine alloys
• Bright/uncoated finish compatible with a wide range of cutting fluids
• Straight-cylindrical shank fits standard chucks and collets without modification
• Tapered web configuration adds tip strength during aggressive feed rates

Compatibility

Designed as an OEM-style screw machine length drill bit suitable for use in CNC machining centers, drill presses, and screw machine setups where a 0.152 inch (wire size 24, 3.86 mm) diameter cutting tool is required.

Installation Notes

Installation and use should be performed by qualified machinists familiar with carbide tooling. Ensure the spindle and chuck are fully stopped and locked out before changing tooling. Solid carbide drills are brittle compared to high-speed steel — avoid side loading, interrupted cuts without proper setup, or dropping the bit on hard surfaces. Verify chuck runout is within acceptable tolerance before use, as excessive runout accelerates tip chipping in carbide drills.