Hertel 2386548 Screw Machine Drill Bit Size 47 Hss

Product Description

The HERTEL 2386548 is a screw machine length drill bit sized at wire gauge 47 (0.0785 inches decimal) with a 135-degree split point and a web-thinned tip geometry. Built from high-speed steel with an oxide coating, this bit is designed for short-reach, high-precision drilling applications where rigidity and reduced deflection are critical. The stubby screw machine length profile makes it well suited for drill press work, CNC drilling operations, and benchtop setups where a standard-length bit would flex or chatter. The split point geometry enables fast penetration with minimal walking, and the oxide finish provides a modest increase in lubricity and surface hardness.

This bit is used in metalworking, light fabrication, and production drilling environments. It is appropriate for drilling steel, aluminum, brass, and similar materials in applications requiring tight hole placement and consistent diameter. The straight-cylindrical shank seats in standard drill chucks without the need for specialized toolholding. At 1.75 inches overall length with a 0.75 inch flute length, it fits compact setups and is commonly used by machinists, tool and die workers, and precision fabricators working in the 0.0000 to 0.1000 inch drill size range.

Key Features

• Wire gauge size 47 at 0.0785 inches decimal diameter for precise small-hole drilling
• 135-degree split point with web thinning reduces thrust force and eliminates center punching on most metals
• Screw machine (stub) length body maximizes rigidity and minimizes deflection in short-reach setups
• High-speed steel construction with oxide coating for improved surface hardness and lubricity
• Straight-cylindrical shank fits standard drill chucks and collet systems without modification
• Right-hand spiral flute with parallel web configuration for consistent chip evacuation

Compatibility

Designed as a direct-fit screw machine length drill bit for any standard drill chuck or collet accepting a 0.0785 inch straight-cylindrical shank, compatible with drill presses, CNC drilling machines, and benchtop power tools across the 0.0000 to 0.1000 inch drill size range.

Installation Notes

A licensed machinist or qualified fabricator should secure the bit firmly in the chuck or collet before operation, verifying no runout before engaging the workpiece. Power down and de-energize the machine before inserting or removing bits. Use appropriate cutting fluid for ferrous materials to extend tool life. Do not exceed the recommended feed and speed parameters for high-speed steel tooling in the given workpiece material.