Cleveland C15654 Cobalt Jobber Drill Bit Letter F

Product Description

The CLEVELAND C15654 is a cobalt jobber-length drill bit sized at Letter F (0.2570 inches) with a 135-degree split point and a TiN (titanium nitride) gold coating. Built from M42 high-performance cobalt steel, it delivers the heat and wear resistance needed for demanding drilling applications. The parabolic flute geometry promotes efficient chip evacuation and reduces cutting pressure. With an overall length of 4.125 inches and a flute length of 2.875 inches, this bit is well suited to general-purpose drilling in both production shop and field environments. Licensed tradespeople and machinists handling hard or abrasive materials are the primary users.

This drill bit is designed for right-hand drilling in cast iron, non-ferrous metals, stainless steel, and carbon or alloy steel. The web-thinned, tapered web design reduces entry resistance in harder workpieces, making it a practical choice for metalworking shops, maintenance machinists, and fabrication tradespeople working with ferrous and non-ferrous stock. It follows a straight-cylindrical shank profile that seats directly into standard drill chucks without requiring a collet adapter.

Key Features

• M42 cobalt steel construction for high heat and wear resistance during hard-material drilling
• 135-degree split point with web thinning for fast engagement and reduced walking on entry
• TiN coating extends cutting edge life in abrasive and ferrous materials
• Parabolic flute profile promotes rapid chip clearing and lower thrust requirements
• Straight-cylindrical shank fits standard drill chucks without adapters
• Meets ASME B94.11M and DIN 338 standards for dimensional consistency

Compatibility

Designed as an OEM-style replacement or standard tooling selection for applications requiring a Letter F (0.2570-inch) jobber drill in cast iron, non-ferrous metals, stainless steel, and steel workpieces.

Installation Notes

Installation is performed by machinists or qualified maintenance tradespeople using a standard drill press, milling machine, or hand drill with a keyed or keyless chuck. Ensure the chuck is fully tightened and the shank is fully seated before operation. Use appropriate cutting fluid or coolant where required by the workpiece material to maximize tool life, noting that this bit does not have through-coolant capability. Follow applicable shop safety standards and wear eye protection during all drilling operations.