Osg 215-3125 Jobber Drill Bit 5/16 Inch 135 Degree

Product Description

The OSG 215-3125 is a jobber-length drill bit designed for general-purpose drilling in metal and alloy materials. It features a 5/16-inch (0.3125 inch) diameter with a 135-degree split point and a bright, uncoated finish. The web-thinned, tapered web configuration reduces thrust and improves chip evacuation at entry. With a slow spiral flute and straight-cylindrical shank, this bit is suited for manual and CNC drill presses operated by machinists and maintenance technicians working in production and repair environments.

This drill bit is intended for use in ferrous and non-ferrous materials including steel, alloy steel, stainless steel, cast iron, aluminum silicate, nickel alloy, titanium, and titanium alloys. Its 5xD flute-to-diameter ratio and 1-5/8-inch flute length make it appropriate for standard-depth hole applications in job shops, manufacturing facilities, and maintenance operations where a reliable general-purpose bit is required.

Key Features

• 5/16-inch diameter with tight tolerance of +0 to -0.013 mm for consistent hole sizing
• 135-degree point angle reduces walking and improves penetration on hard materials
• Web-thinned, tapered web lowers cutting thrust and extends tool life
• Bright uncoated finish suitable for a wide range of ferrous and non-ferrous workpiece materials
• Slow spiral flute design promotes chip control in tougher alloys
• Straight-cylindrical shank fits standard drill chucks without adapters

Compatibility

Designed for use with standard drill presses, CNC machining centers, and hand drills equipped with a 5/16-inch or larger chuck. Compatible workpiece materials include steel, alloy steel, stainless steel, cast iron, aluminum silicate, nickel alloy, titanium, and titanium alloys as specified by OSG for the Series 215.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with cutting tool safety. Secure the shank fully in the chuck and verify runout before beginning a cut. Coolant-through is not supported on this bit, so apply cutting fluid externally when drilling stainless steel, nickel alloy, or titanium to manage heat buildup. De-energize and lock out any powered equipment before changing bits.