Hertel 61698916 Screw Machine Drill Bit 29/64 in Hss

Product Description

The HERTEL 61698916 is a screw machine length drill bit designed for high-volume drilling in metal, wood, and general-purpose materials. The shortened flute length compared to a jobber-length bit provides greater rigidity and reduced deflection, making it well suited for production drilling and turret lathe applications. Constructed from high-speed steel with an oxide coating, this bit features a standard 118-degree split point, two regular spiral flutes, and a straight cylindrical shank. Overall length is 3-9/16 inches with a flute length of 2-1/8 inches. It is a single-piece, individually packaged bit intended for use in standard drill chucks and CNC toolholders.

Screw machine length bits like the 61698916 are commonly used in metal fabrication shops, machine shops, and manufacturing environments where shorter drill length improves rigidity and tool life. The 29/64-inch diameter and right-hand cutting direction make this bit compatible with standard drill presses, lathes, milling machines, and hand-held power drills. The oxide finish provides mild lubricity and corrosion resistance for general-purpose ferrous material drilling. This bit is appropriate for machinists, toolroom technicians, and production floor operators working with steel, cast iron, aluminum, and similar materials.

Key Features

• 29/64-inch diameter high-speed steel construction for durability in metal drilling applications
• 118-degree standard point angle for general-purpose use across a wide range of materials
• Oxide coating provides mild lubricity and surface protection
• Screw machine length body reduces deflection and improves rigidity versus jobber-length bits
• Straight cylindrical shank compatible with standard three-jaw drill chucks and toolholders
• Right-hand cutting direction with regular spiral flutes for efficient chip evacuation

Compatibility

Designed as a general-purpose screw machine length replacement or production drill bit conforming to ANSI specifications, suitable for use in drill presses, CNC turret lathes, milling machines, and hand-held power drills accepting a straight cylindrical shank.

Installation Notes

Installation and use should be performed by qualified machinists or toolroom technicians familiar with drill press and lathe operation. Ensure the machine spindle is fully stopped and de-energized before inserting or removing the bit from the chuck. Secure the straight shank firmly in the chuck to the full depth of the chuck jaws to prevent slippage under load. Do not exceed the rated speed range appropriate for the workpiece material and bit diameter.