Cleveland C16631 Jobber Drill Bit Size 19 Cobalt Tin

Product Description

The CLEVELAND C16631 is a jobber-length drill bit engineered for heavy-duty drilling applications in metal and hard materials. Built from M42 cobalt high-speed steel and finished with a titanium nitride (TiN) coating, this bit delivers extended tool life and resistance to heat buildup under sustained cutting loads. The 135-degree split point starts on contact without a center punch, reducing walking on smooth or curved surfaces. With a parabolic flute design and web-thinned, tapered web configuration, the C16631 evacuates chips efficiently and maintains cutting performance through deeper holes. It measures 3.25 inches overall and weighs 0.2 pounds.

This bit suits machinists, fabricators, maintenance technicians, and tool-and-die professionals working with ferrous metals, stainless steel, high-strength alloys, and similar difficult-to-machine materials. The straight-cylindrical shank is compatible with standard drill chucks and quick-change systems. Right-hand cutting direction and parabolic flute geometry make it a reliable choice for production drilling in both manual and CNC-assisted setups where chip clearance and tool longevity are priorities.

Key Features

• M42 cobalt HSS construction for heavy-duty cutting in hard and abrasive materials
• Titanium nitride (TiN) coating reduces friction and extends service life
• 135-degree split point eliminates the need for center-punching and reduces drill walk
• Parabolic flute with tapered, web-thinned web improves chip evacuation in deep holes
• Straight-cylindrical shank fits standard and quick-change drill chucks
• Meets ASME B94.11M and DIN 338 standards

Compatibility

The C16631 is a wire-gauge size 19 (0.1660 inches) jobber-length drill bit from the Cleveland Series 2075T, suitable for use in any drill press, hand drill, or CNC spindle accepting a straight-cylindrical shank of 0.1660 inches diameter. Diameter tolerance is -0.0007 to 0.0000 inches per ANSI specification designation.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or maintenance professionals familiar with metalworking equipment. Secure the shank fully in the chuck and verify runout before cutting. Power down all equipment before changing bits or adjusting chuck tension. Follow applicable machine tool safety standards and shop procedures when drilling into hardened or high-strength materials.