Hertel 61699666 Screw Machine Drill Bit Wire 38 Hss

Product Description

The HERTEL 61699666 is a screw machine length drill bit designed for high-volume drilling in metal, wood, and plastic in production and maintenance environments. Built from high-speed steel with an oxide coating for added wear resistance, this bit features a 118-degree standard point angle and a right-hand cut spiral flute configuration. At 1-13/16 inches overall length, the stub-style geometry provides rigidity and reduced deflection in short-reach drilling applications. Licensed HVAC techs, machinists, pipefitters, and general maintenance tradespeople reach for screw machine length bits when drill press or hand drill clearance is limited and hole accuracy matters.

This bit is sized to wire gauge 38, equal to 0.1015 inch decimal diameter. It is suited for general-purpose drilling tasks in residential and light commercial maintenance, fabrication shops, and assembly operations. The regular spiral with a 3xD flute-to-diameter ratio moves chips efficiently in shallow-to-moderate depth holes. The straight-cylindrical shank fits standard drill chucks without adapters. Flute length is 13/16 inch, keeping the cutting zone compact for screw machine applications.

Key Features

• Wire size 38 (0.1015 inch decimal) for precise small-diameter hole work
• 118-degree standard point angle for general-purpose entry in a wide range of materials
• High-speed steel construction with oxide finish for improved wear resistance
• Screw machine (stub) length at 1-13/16 inches OAL reduces deflection in tight clearances
• Right-hand cut with regular spiral and 2-flute design for efficient chip evacuation
• Straight-cylindrical shank fits standard drill chucks directly

Compatibility

Designed as a general-purpose screw machine length drill bit compatible with any standard drill chuck accepting a straight-cylindrical shank at 0.1015 inch diameter.

Installation Notes

This bit is installed by maintenance technicians, machinists, and tradespeople using drill presses, hand drills, or CNC equipment. Secure the straight-cylindrical shank firmly in the chuck before operation and verify chuck key removal before powering on. Use appropriate cutting fluid or lubricant when drilling ferrous metals to extend bit life. Inspect the cutting edges for wear or chipping before each use and replace when point geometry is compromised.