Osg 15209005 Cobalt Jobber Drill Bit No. 4 Tin

Product Description

The OSG 15209005 is a cobalt jobber length drill bit designed for high-performance drilling in steel and alloy steel. It carries a Titanium Nitride (TiN) coating that increases surface hardness and extends tool life in demanding production environments. The bit measures 4-5/16 inches overall length with a 2-1/2 inch flute length, a 130-degree split point, and a straight-cylindrical shank with a 1/4 inch shank diameter. The 130-degree point geometry promotes self-centering and reduces the need for a center punch on most steel workpieces. This bit is part of OSG Series 1500 and is used by machinists, maintenance technicians, and metalworking professionals.

This drill bit is rated for use in steel and alloy steel applications and is suited for blind hole drilling, cross hole drilling, through drilling, and self-centering operations. The No. 4 wire gauge size corresponds to 0.2090 inch (5.31 mm) diameter. The regular spiral flute configuration supports efficient chip evacuation in standard drilling setups. Coolant-through capability is not available on this model. It is sold individually as a single-piece unit.

Key Features

• Cobalt construction for increased heat and wear resistance in ferrous metals
• Titanium Nitride (TiN) coating extends tool life and reduces friction
• 130-degree drill point promotes self-centering and reduces walking on steel surfaces
• R-thinned web with tapered web configuration reduces thrust force at entry
• Right-hand cut, regular spiral flute for efficient chip removal
• Straight-cylindrical shank fits standard 3-jaw drill chucks without adapters

Compatibility

Designed as an OEM-style jobber length drill bit for use in standard drill chucks and drill press setups accepting a 1/4 inch straight-cylindrical shank. Intended for drilling steel and alloy steel workpieces as specified by OSG Series 1500 design parameters.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or metalworking technicians familiar with cutting tool selection and machine operation. Secure the shank fully in a properly rated drill chuck and verify chuck tightness before operation. Always wear appropriate eye protection and follow facility safety procedures when operating drilling equipment. Do not exceed the recommended speed and feed ranges for the workpiece material and bit diameter.