Cleveland C16531 Jobber Drill Bit Size 29 Cobalt 135 Deg

Product Description

The CLEVELAND C16531 is a wire gauge size 29 jobber length drill bit designed for high-performance drilling in tough materials. At 0.1360 inches in diameter, it features a 135-degree split point for fast penetration and reduced walking on entry. The parabolic flute geometry improves chip evacuation and allows deeper cuts with less pecking. Manufactured from M42 cobalt high-speed steel with a gold oxide coating, this bit handles heat and wear better than standard HSS tooling. Overall length is 2-7/8 inches with a 1-3/4 inch flute length. The straight-cylindrical shank fits standard drill chucks without modification.

This bit is suited for production and maintenance drilling in cast iron, stainless steel, carbon steel, and non-ferrous metals. The web-thinned, split-point tip self-centers on the workpiece, eliminating the need for a center punch in most applications. It is a common choice for machinists, tool and die shops, and maintenance technicians working with harder alloys where standard HSS bits fail prematurely. The Series 2075 design meets ASME B94.11M and DIN 338 standards, making it appropriate for both domestic and metric-referenced manufacturing environments.

Key Features

• M42 cobalt steel construction handles elevated cutting temperatures in stainless steel and hard alloys
• 135-degree split point self-centers and reduces thrust required at entry
• Parabolic flute profile accelerates chip removal and reduces heat buildup in the flute
• Gold oxide coating provides lubricity and additional surface hardness
• Web-thinned tapered web reduces cutting resistance without sacrificing rigidity
• Right-hand cut, straight-cylindrical shank compatible with standard drill chucks and CNC toolholders

Compatibility

Designed as an OEM-style jobber length drill bit for use in hand drills, drill presses, and CNC machining centers equipped with standard straight-shank toolholders accepting a 0.1360-inch shank diameter.

Installation Notes

This bit is installed by machinists and maintenance technicians using standard drill chucks or collet-style toolholders. Secure the shank fully in the chuck before operation and verify runout is within acceptable tolerance. Use appropriate cutting fluid or coolant when drilling stainless steel or cast iron to extend tool life. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is observed.