Hertel 74130782 Screw Machine Drill Bit Size 26 Cobalt

Product Description

The HERTEL 74130782 is a screw machine length drill bit designed for high-production drilling in metal fabrication, machining, and maintenance applications. Built from cobalt high-speed steel (HSCO), it handles harder workpiece materials and elevated cutting temperatures that standard HSS bits cannot sustain. The 135-degree split point starts on contact without a center punch and reduces walking on flat or curved surfaces. At 2-1/16 inches overall length with a 1-inch flute length, this stub-length geometry delivers increased rigidity compared to jobber-length bits, making it well suited for drill press work, CNC turret operations, and handheld drilling where chatter and deflection are concerns.

This bit is used in production machining shops, tool rooms, and field maintenance environments where wire gauge Size 26 (0.1470 inch) holes are required in steel, stainless steel, cast iron, titanium, and other tough alloys. The screw machine length format is a common choice when short setup overhang is needed in turret lathes, automatic screw machines, and bench drill presses. It is sold individually and suits both professional machinists and trade technicians performing precision hole work on metal components.

Key Features

• Cobalt HSS construction resists heat buildup when drilling hardened steels and high-alloy materials
• 135-degree split point reduces thrust force and eliminates the need for a center punch on most surfaces
• Web-thinned parallel web improves chip evacuation and reduces torque requirements
• Screw machine (stub) length increases rigidity and minimizes deflection versus jobber-length bits
• Right-hand cutting, regular spiral flute pattern with straight cylindrical shank for standard chuck compatibility
• Straw finish indicates cobalt heat treatment without an additional coating that could affect hole tolerance

Compatibility

Designed as a standard screw machine length drill bit with a straight cylindrical shank, compatible with any drill press, turret lathe, CNC machine, or handheld drill chuck sized to accept a 0.1470-inch shank diameter.

Installation Notes

A licensed machinist or qualified technician should secure the bit firmly in a properly sized chuck before operation, ensuring zero runout where precision hole tolerances are required. Power down and de-energize the machine before changing bits. Apply appropriate cutting fluid for the workpiece material to extend tool life and maintain hole quality. Do not exceed the recommended feed rate or spindle speed for the workpiece material and bit diameter.