Hertel 66692013 Screw Machine Drill Bit Size 25 Cobalt

Product Description

The HERTEL 66692013 is a screw machine length drill bit designed for high-speed, production-level drilling in metal fabrication and machining applications. Built from cobalt steel with a titanium nitride (TiN) coating, this bit handles tough ferrous and non-ferrous materials with extended tool life. It measures 2-1/16 inches overall length with a 1-inch flute length and carries a wire gauge size 25 designation, equal to 0.1495 inch decimal diameter. The 135-degree split point reduces walking on entry and lowers thrust requirements at the start of the cut. The parallel web and web-thinned geometry support clean chip evacuation during drilling operations.

This bit is suited for screw machine work, production drilling, and general-purpose metalworking where a stubby, rigid tool profile is needed. The shorter-than-jobber body length increases rigidity and reduces deflection, making it a practical choice for repetitive drilling cycles on lathes, screw machines, drill presses, and CNC equipment. Machinists, tool-and-die workers, and maintenance technicians working with steel, cast iron, stainless, and similar hard materials will find this bit appropriate for close-tolerance hole production.

Key Features

• Cobalt steel construction for heat resistance and durability in hard materials
• TiN coating extends cutting edge life and reduces friction
• 135-degree split point reduces drill walk and decreases entry thrust
• Web-thinned, parallel web design promotes efficient chip evacuation
• Screw machine length body improves rigidity over standard jobber-length bits
• Straight-cylindrical shank fits standard drill chucks without special tooling

Compatibility

Designed as a standard screw machine length drill bit with a straight-cylindrical shank compatible with conventional drill chucks and collet systems accepting a 0.1495-inch shank diameter.

Installation Notes

Installation is performed by machinists or maintenance technicians using a standard drill chuck or collet rated for the 0.1495-inch shank diameter. Ensure the machine spindle is fully stopped and the chuck is secure before beginning drilling. Coolant-through is not supported on this bit, so apply cutting fluid externally when drilling ferrous materials to manage heat buildup. Follow applicable machine guarding and PPE requirements per shop safety standards.