Osg 215-0709 Jobber Drill Bit 1.80 Mm 135 Degree

Product Description

The OSG 215-0709 is a jobber-length twist drill bit designed for general-purpose hole-making in a wide range of metallic and engineered materials. Ground to a 1.80 mm diameter with a 135-degree split point and web-thinned geometry, it starts on-center without a pilot hole and reduces thrust force on entry. The bright, uncoated HSS construction suits dry drilling or light cutting fluid applications. Overall length is 43.00 mm with an 18.00 mm flute length and a straight-cylindrical shank measuring 1.80 mm. Drill bit diameter tolerance is held to +0 to -0.013 mm, which keeps hole size consistent across production runs.

The 215-0709 targets machinists, tool-and-die workers, and maintenance technicians drilling in steel, alloy steel, stainless steel, cast iron, aluminum silicate, nickel alloy, titanium, and titanium alloy. The slow-spiral, tapered-web design keeps chip evacuation controlled in these tougher materials. Flute-to-diameter ratio is 5xD, appropriate for the shallow depths typical of jobber applications in both bench drill press and CNC machining center setups.

Key Features

• 1.80 mm cutting diameter held to +0 to -0.013 mm tolerance
• 135-degree standard point with web-thinning for self-starting entry
• Slow spiral, tapered-web flute geometry for controlled chip flow in hard metals
• Bright, uncoated finish compatible with dry drilling and water-soluble coolants
• Straight-cylindrical shank fits standard drill chucks and collets
• General-purpose Series 215 rating covering a broad range of workpiece materials

Compatibility

Designed as an OEM-style replacement or replenishment drill bit for general-purpose drilling operations; fits any drill chuck or collet accepting a 1.80 mm straight-cylindrical shank.

Installation Notes

A licensed machinist or qualified maintenance technician should confirm chuck runout is within acceptable limits before seating the bit, as a 1.80 mm diameter is sensitive to even minor spindle misalignment. Secure the shank fully in the chuck or collet and verify clamping torque is adequate before starting the spindle. When drilling stainless steel, nickel alloy, or titanium, use a cutting fluid rated for those materials and reduce feed pressure to prevent work-hardening ahead of the point. Inspect the cutting edges for wear after each production run and replace when the point shows chipping or diameter undersize.