Cleveland C16722 Cobalt Drill Bit 12mm Tin Coated

Product Description

The CLEVELAND C16722 is a heavy-duty cobalt jobber length drill bit designed for high-performance drilling in tough materials. Built from M42 cobalt steel and finished with a Titanium Nitride (TiN) coating, this bit handles hardened steel, stainless, cast iron, and other abrasive metals that standard HSS bits cannot handle reliably. It measures 12 mm (0.4724 inches) in diameter with an overall length of 5.945 inches and a flute length of 3.976 inches. The 135-degree split point starts on contact without walking or requiring a center punch. Machinists, tool-and-die workers, and maintenance mechanics specify this bit for demanding production and repair applications.

The C16722 is suited for use in both CNC machining centers and manual drill presses. Its parabolic flute geometry improves chip evacuation and allows higher feed rates compared to standard spiral flutes, reducing heat buildup and extending tool life. The straight-cylindrical shank accepts standard drill chucks without adapters. This bit is a practical choice for fabrication shops, maintenance facilities, and industrial job sites drilling into steel, alloy steel, and similar hard materials where drill longevity and hole accuracy are priorities.

Key Features

• M42 cobalt steel construction for heat resistance in hard and abrasive materials
• Titanium Nitride (TiN) coating reduces friction and extends cutting life
• 135-degree split point for self-centering start without walking
• Parabolic flute design improves chip clearance and allows higher feed rates
• Web-thinned tapered web reduces thrust force required during drilling
• Straight-cylindrical shank fits standard drill chucks directly
• Conforms to DIN 338 specification for consistent jobber-length geometry

Compatibility

Designed as a jobber-length replacement or production-use drill bit for applications requiring a 12 mm or 0.4724-inch diameter hole in steel, stainless steel, cast iron, and similar hard materials. Fits any standard drill chuck accepting a 0.4724-inch straight shank.

Installation Notes

This bit is installed and operated by machinists or qualified maintenance technicians using a drill press, milling machine, or hand drill with a compatible chuck. Secure the shank fully in the chuck jaws before operation and verify chuck key is removed before starting the machine. Use appropriate cutting fluid or coolant for the material being drilled to preserve coating and edge life. Inspect the cutting edges for wear or chipping before each use and replace when the bit no longer starts cleanly or produces oversized holes.