Osg 15136005 Cobalt Jobber Drill Bit No.29 Tin Coated

Product Description

The OSG 15136005 is a cobalt jobber-length drill bit with a titanium nitride (TiN) coating, designed for high-performance drilling in steel and alloy steel. It carries a No. 29 wire gauge size, equivalent to 0.1360 decimal inch (3.45 mm), with a 130-degree split-point angle and an X-thinned web for reduced thrust and improved self-centering. The straight-cylindrical shank measures 3/16 inch in diameter and the overall length is 3-3/16 inches. This bit is part of OSG Series 1500 and is sold individually. It is suited for licensed trade professionals and production machinists working with ferrous metals.

This drill bit is intended for use on steel and alloy steel workpieces in applications including blind hole drilling, cross hole drilling, through drilling, and self-centering starts. The regular spiral flute, 1-3/4-inch flute length, and right-hand cut geometry make it well suited for handheld drill motors, drill presses, and CNC machining centers where a standard jobber-length reach is appropriate. The TiN coating extends tool life in repetitive production or service drilling environments.

Key Features

• Cobalt construction for heat resistance and durability in steel and alloy steel
• TiN coating reduces friction and extends cutting edge life
• 130-degree point angle improves penetration and reduces walking on entry
• X-thinned web lowers drilling thrust and aids self-centering
• Right-hand spiral flute efficiently evacuates chips from blind and cross holes
• Straight-cylindrical shank compatible with standard drill chucks

Compatibility

Designed for drilling steel and alloy steel workpieces (primary workpiece material code P). Fits any standard drill chuck accepting a 3/16-inch straight shank. Suitable for handheld, drill press, and CNC spindle applications requiring a jobber-length No. 29 diameter bit.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with rotating cutting tools. Secure the workpiece before drilling and confirm the chuck is properly tightened on the straight-cylindrical shank before operation. Always wear appropriate eye protection and follow applicable shop safety procedures when operating drill equipment. Do not exceed the rated speed range for cobalt bits in the material being drilled.