Osg 15093505 Cobalt Drill Bit No. 42 0.0935 in Tin

Product Description

The OSG 15093505 is a cobalt jobber length drill bit in wire gauge size No. 42, equivalent to 0.0935 inches (2.38 mm) in diameter. Finished with a Titanium Nitride (TiN) coating for extended tool life, it features a 130-degree split point and a 2-flute spiral flute design with X-thinned web geometry for improved chip evacuation and self-centering performance. Overall length is 2.5 inches with a 1.25-inch flute length and a straight-cylindrical shank measuring 0.125 inches in diameter. This bit is classified under OSG Series 1500 and is built for high-performance drilling applications in steel and alloy steel. Installation and use are typical for machinists, maintenance technicians, and skilled tradespeople.

This drill bit is suited for blind hole drilling, cross hole drilling, general drilling, and self-centering operations in steel and alloy steel workpieces. The TiN coating reduces friction and increases surface hardness, making it appropriate for production environments and repetitive drilling cycles. The right-hand spiral flute configuration and tapered web construction support consistent chip clearance in tight-tolerance holes common in fabrication and mechanical assembly work. The No. 42 wire gauge size is commonly called for in tap-drill and close-tolerance applications.

Key Features

• Wire gauge No. 42 size — 0.0935 inches (2.38 mm) diameter with tolerance of +0 to -0.014 mm
• Cobalt construction with Titanium Nitride (TiN) coating for heat and wear resistance
• 130-degree drill point angle with X-thinned, tapered web for self-centering entry
• 2-flute regular spiral design promotes efficient chip evacuation
• Right-hand cut, straight-cylindrical shank compatible with standard drill chucks
• Rated for blind hole, cross hole, drilling, and self-centering tool applications

Compatibility

Designed as a jobber length drill bit for use in standard drill chucks and CNC drilling setups where a No. 42 wire gauge size is specified. Primary workpiece material compatibility includes steel and alloy steel per workpiece material code P.

Installation Notes

This drill bit is installed by machinists and maintenance technicians using standard drill presses, CNC machining centers, or handheld drill motors with compatible chuck capacity. Ensure the machine spindle is fully stopped and power is isolated before changing tooling. Secure the straight-cylindrical shank firmly in the chuck to prevent slippage during operation. Coolant-through is not supported on this bit; use external coolant or cutting fluid as appropriate for the workpiece material.