Hertel 61698957 Screw Machine Drill Bit 0.29 in Hss

Product Description

The HERTEL 61698957 is a screw machine length drill bit designed for general-purpose metal drilling in production and maintenance environments. It is sized at letter L (0.2900 inches in diameter) and features a 118-degree standard point angle for reliable penetration across a wide range of materials. Constructed from high speed steel with an oxide finish, this bit offers adequate heat and wear resistance for everyday shop use. The straight-cylindrical shank seats securely in standard drill chucks, and the two-flute spiral design provides efficient chip evacuation during operation.

This drill bit is suited for use in screw machines, drill presses, and handheld power drills where a shorter, more rigid cutting tool is preferred over a jobber-length bit. The reduced overall length of 2-3/4 inches (with a 1-9/16-inch flute length) improves stability and reduces deflection in close-tolerance or high-feed applications. Typical users include machinists, maintenance technicians, and fabricators working in metal, plastics, and similar materials requiring a right-hand cut, standard-point bit in the 0.25-to-0.30-inch size range.

Key Features

• Letter L size: 0.2900 inches diameter for precise hole sizing
• 118-degree standard point angle for general-purpose drilling
• High speed steel construction with oxide finish for wear resistance
• Screw machine (stub) length reduces deflection in high-feed applications
• Two-flute spiral design promotes efficient chip clearance
• Straight-cylindrical shank compatible with standard 3-jaw drill chucks

Compatibility

Designed as a general-purpose screw machine length drill bit suitable for use in screw machines, drill presses, and power drills accepting a straight-cylindrical shank in the 0.25-to-0.30-inch diameter range.

Installation Notes

Installation and use of this drill bit is typically performed by machinists or maintenance technicians. Ensure the machine spindle is fully stopped and locked out before inserting or removing the bit from the chuck. Secure the shank firmly in the chuck to the full depth of the jaws to prevent slippage under load. Follow applicable shop safety standards and machine manufacturer guidelines for feed rate and speed selection based on material type.