Hertel 89322119 Screw Machine Drill Bit Wire 57 Hss

Product Description

The HERTEL 89322119 is a screw machine length drill bit designed for precision drilling in metalworking and general machining applications. Built from high-speed steel with a bright uncoated finish, this bit features a 118-degree split point angle and a right-hand cutting direction. The shortened screw machine length body provides added rigidity compared to jobber-length bits, reducing deflection when drilling small-diameter holes. At 0.0430 inches in diameter (wire size 57), it is suited for fine-detail work, tap hole preparation, and light production drilling where accuracy in tight tolerances is required.

This drill bit is intended for use in screw machines, drill presses, CNC machining centers, and hand-held power drills where a compact, rigid bit is needed. Wire gauge sizing makes it a standard choice for machinists and tool-and-die technicians working with ferrous and non-ferrous metals, plastics, and similar materials. The general-purpose grade and bright finish make it appropriate for a wide range of shop environments without specialized coolant requirements.

Key Features

• Wire size 57 designation with a decimal diameter of 0.0430 inches for precise small-hole drilling
• 118-degree conventional point angle suits general-purpose drilling across common materials
• High-speed steel construction provides adequate hardness and heat resistance for production use
• Screw machine length body increases rigidity and reduces bit deflection in short-reach applications
• Right-hand cut with bright uncoated finish — no coating to flake or interfere with close-tolerance holes
• 1/2-inch flute length accommodates chip evacuation within the usable cutting depth

Compatibility

Designed as a general-purpose screw machine length drill bit compatible with standard drill chucks and collets sized for wire gauge tooling in metalworking and machining operations.

Installation Notes

This bit is installed and changed by machinists or tool room technicians following standard machine tooling procedures. Always power down and lock out the machine before changing tooling. Secure the bit fully in the chuck or collet to the correct engagement depth before operation. Avoid excessive feed pressure on small-diameter bits, as deflection or breakage can occur if the bit is not properly supported or if the drill is not running at an appropriate speed for the material.