Cleveland C15902 Cobalt Jobber Drill Bit 3/32 in

Product Description

The CLEVELAND C15902 is a cobalt jobber-length drill bit designed for demanding metalworking and fabrication applications. Built from M42 cobalt high-speed steel with an oxide coating, this bit handles tough materials including superalloys, stainless steel, and hardened workpieces where standard HSS bits fall short. The 135-degree split point reduces walking on contact and lowers thrust force needed to start a hole. At 2.25 inches overall length with a 0.75-inch flute, this is a standard jobber form factor sized for use in drill presses, hand drills, and CNC drilling operations. Licensed trades and industrial machinists rely on this series for consistent, repeatable hole quality in heavy-duty service.

The C15902 is rated for drilling superalloys and other difficult workpiece materials where heat resistance and edge retention are critical. The fast spiral flute evacuates chips efficiently in deep or interrupted cuts. The straight cylindrical shank fits standard drill chucks without modification. This bit is part of the Cleveland Series 3780, a heavy-duty cobalt line built to NAS specification and conforming to ASME B94.11M standards. It is sold individually with a minimum order quantity of 10 units, making it suitable for shop stocking and tool crib replenishment.

Key Features

• M42 cobalt high-speed steel construction for superior heat and wear resistance in superalloy drilling
• 135-degree split point reduces thrust and eliminates the need for a center punch on most surfaces
• Oxide coating improves lubricity and extends tool life in high-heat cutting conditions
• Fast spiral flute promotes aggressive chip evacuation during deep drilling
• Web-thinned, tapered web design reduces cutting resistance and heat buildup at the tip
• Conforms to ASME B94.11M and NAS specification for dimensional consistency

Compatibility

Designed as an OEM-style replacement and standard shop consumable for any application requiring a 3/32-inch cobalt jobber-length drill bit in a straight cylindrical shank configuration compatible with standard drill chucks.

Installation Notes

Installation of this drill bit requires seating the straight cylindrical shank fully and evenly in a keyed or keyless chuck before tightening. Machinists and fabricators should confirm the chuck capacity accommodates a 3/32-inch shank diameter before use. Always ensure the workpiece is properly secured before drilling, and use an appropriate cutting fluid or coolant when drilling superalloys to manage heat and extend bit life. Inspect the cutting edges for wear or chipping between uses, as cobalt bits used beyond their service life can fracture under load.