Cleveland C15094 Screw Machine Drill Bit 4 Wire Cobalt

Product Description

The CLEVELAND C15094 is a cobalt screw machine length drill bit designed for demanding metal-cutting applications in production and maintenance environments. Built to ASME B94.11M standards, this Series 2175A bit cuts a 0.2090-inch diameter hole and features a 135-degree split point that reduces walking and cutting pressure at startup. The parabolic flute geometry improves chip evacuation in deep-hole drilling. At 2.375 inches overall length, the stub-style profile provides rigidity in short-reach setups. Installed by machinists, tool-and-die techs, and maintenance mechanics, this bit suits both manual and CNC drilling operations.

The C15094 is intended for drilling alloy steels and aluminum where tool longevity and dimensional accuracy are priorities. The M42 cobalt material grade offers improved heat resistance compared to standard HSS, making it a common choice for interrupted cuts or work-hardening materials. The straight cylindrical shank fits standard drill chucks without modification. Typical applications include production runs on CNC mills and drill presses, as well as field maintenance work where bit life under repeated use is critical.

Key Features

• M42 cobalt construction for extended tool life in alloy steels and aluminum
• 135-degree split point reduces thrust force and eliminates center-punch requirement
• Parabolic flute profile promotes efficient chip clearance in deep holes
• Web-thinned parallel web for reduced cutting resistance
• Screw machine length body provides added rigidity over jobber-length bits
• Meets ASME B94.11M dimensional standard with a diameter tolerance of +0.0000 to -0.0007 inches

Compatibility

Designed as a direct-fit replacement or standard tooling option for any drill chuck accepting a 0.2090-inch straight cylindrical shank, consistent with ASME B94.11M screw machine length specifications. Primary workpiece materials are alloy steel and aluminum.

Installation Notes

A licensed machinist or qualified maintenance technician should secure the bit firmly in a drill chuck and verify runout before beginning a cut. Ensure the drilling machine is fully powered down before inserting or removing the bit. Use appropriate cutting fluid for the workpiece material to maintain tool life and hold dimensional tolerances. Follow shop-specific feeds-and-speeds charts for M42 cobalt tooling when setting spindle RPM and feed rate.