Hertel 61699484 Screw Machine Drill Bit Size 57 Hss

Product Description

The HERTEL 61699484 is a screw machine length drill bit sized at wire gauge 57 (0.0430 inches decimal equivalent), designed for short-reach drilling applications where a stub-length tool provides added rigidity and accuracy. Manufactured from high-speed steel with an oxide coating for mild lubricity and surface protection, this bit features a standard 118-degree split point, a 2-flute spiral configuration, and a straight cylindrical shank. The overall length is 1.375 inches, making it well suited to drill press, CNC, or hand-tool use in tight fixtures. Machinists, tool-and-die technicians, and maintenance mechanics are the primary users.

This drill bit is intended for general-purpose drilling in ferrous and non-ferrous metals, plastics, and similar materials where a small-diameter, short-length drill is required. The screw machine length profile reduces deflection compared to jobber-length bits at this diameter, improving hole location accuracy. It is commonly used in production environments, machine shops, and maintenance facilities where precise small-hole drilling is routine.

Key Features

• Wire gauge size 57, 0.0430 inch decimal equivalent for precise small-hole drilling
• High-speed steel construction provides good hardness and wear resistance across general-purpose applications
• Oxide coating offers mild corrosion resistance and surface lubricity
• 118-degree standard point angle suits a broad range of workpiece materials
• Screw machine (stub) length at 1.375 inches overall reduces deflection and improves rigidity
• Right-hand cut, 2-flute spiral design for standard chip evacuation
• Straight cylindrical shank compatible with standard drill chucks

Compatibility

Designed as a general-purpose screw machine length drill bit conforming to ANSI specification, compatible with standard drill chucks and collets accepting a straight cylindrical shank in this diameter range (0.0000 to 0.1000 inches).

Installation Notes

Installation and use should be performed by a qualified machinist or maintenance technician familiar with small-diameter tooling. Secure the shank firmly in a properly sized drill chuck or collet before operation to prevent runout. At this diameter, use low feed pressure and appropriate cutting fluid to minimize breakage risk. Inspect the cutting edges before each use and replace the bit if chipping or dulling is observed.