Hertel 74459934 Solid Carbide Jobber Drill Bit 3 Mm

Product Description

The HERTEL 74459934 is a solid carbide jobber-length drill bit designed for precision hole-making in a wide range of materials. Built to a 118-degree standard point angle with a bright (uncoated) finish, this bit delivers consistent performance in general-purpose drilling applications. The straight-cylindrical shank measures 0.1181 inches in diameter and fits standard drill chucks without adapters. At 2.25 inches overall length with a 1.25-inch flute length, it is sized for jobber-length reach in machine tool, CNC, and benchtop drill press setups. The two-flute right-hand spiral configuration evacuates chips efficiently, and the web-thinned, tapered web construction reduces thrust during entry.

This drill bit is suited for machinists, toolroom technicians, and production operators working in metals, plastics, and composite materials where tight diameter tolerance is required. With a diameter tolerance of -0.0005 to 0.0000 inches, it is appropriate for close-tolerance through-holes and clearance drilling in precision components. The C2 material grade carbide substrate supports higher cutting speeds than high-speed steel alternatives, making it a practical choice for CNC machining centers and manual mills operating at elevated RPM.

Key Features

• Solid carbide construction rated at material grade C2 for wear resistance at elevated cutting speeds
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• Bright finish - no coating applied, suitable for materials where coating adhesion is unnecessary
• Diameter tolerance of -0.0005 to 0.0000 inches for close-tolerance hole sizing
• Two-flute right-hand spiral with regular helix for efficient chip evacuation
• Straight-cylindrical shank compatible with standard drill chucks and collet systems

Compatibility

Designed as a general-purpose jobber-length drill bit for use in CNC machining centers, manual drill presses, and milling machines accepting a straight-cylindrical shank of 0.1181 inches diameter.

Installation Notes

This bit should be installed by a qualified machinist or tooling technician familiar with cutting tool setup. Secure the shank fully in the chuck or collet and verify runout before operation. Power down and lock out the machine before changing tooling. Do not exceed the recommended cutting speed range for the workpiece material and carbide grade in use.