Osg 15375005 Cobalt Jobber Drill Bit 3/8 Inch 130 Deg

Product Description

The OSG 15375005 is a cobalt jobber-length drill bit designed for high-performance drilling in steel and alloy steel applications. It measures 3/8 inch (0.3750 inch decimal) in diameter with a 5-7/16 inch overall length and a 3-5/8 inch flute length. The bit features a 130-degree R-thinned point for improved self-centering and reduced thrust in hard materials. A titanium nitride (TiN) coating extends surface hardness and wear resistance. This bit is intended for use by machinists, maintenance technicians, and metalworking tradespeople who require consistent performance in production or field drilling operations.

The OSG 15375005 is suited for drilling blind holes, cross holes, and through holes in steel and alloy steel workpieces. Its regular spiral flute geometry promotes efficient chip evacuation in these materials. The straight-cylindrical shank fits standard 3/8 inch drill chucks and collet holders found on drill presses, CNC machines, and hand drills. This bit fits within OSG Series 1500 and is appropriate for right-hand-cut applications where a standard jobber length reach is sufficient for the workpiece depth.

Key Features

• Cobalt construction provides heat resistance and durability when drilling hardened and alloy steels
• TiN coating increases surface hardness and extends tool life in abrasive materials
• 130-degree R-thinned point promotes self-centering and reduces walking on hard surfaces
• Regular spiral flute with tapered web configuration improves chip flow and reduces drill deflection
• Straight-cylindrical shank is compatible with standard 3/8 inch chucks and collet systems
• Two-flute design balances cutting speed and chip clearance for metalworking applications

Compatibility

Designed as an OEM-style replacement or direct-use jobber drill bit for standard 3/8 inch drill chucks and collet holders; suitable for use in drill presses, machining centers, and hand-held power drills where a straight-cylindrical shank bit is specified.

Installation Notes

Installation of this drill bit should be performed by a qualified machinist or technician familiar with proper tooling procedures. Ensure the drill chuck or collet is fully de-energized and the spindle is at a complete stop before inserting or removing the bit. Seat the shank fully into the chuck and verify runout before beginning any cut. Do not exceed the tool's rated speed range for the workpiece material being drilled.