Hertel 89320782 Screw Machine Drill Bit 1/8 Inch Hss

Product Description

The HERTEL 89320782 is a screw machine length drill bit designed for general-purpose drilling in metal, wood, and plastics. Built from high-speed steel with a bright uncoated finish, it measures 1/8 inch (0.1250 inch decimal) in diameter with an overall length of 1-7/8 inches and a flute length of 7/8 inch. The 118-degree split point geometry is the standard configuration for a wide range of production and maintenance drilling tasks. Its compact screw machine length makes it well-suited for use in tight workspaces and short-stroke drill presses where a jobber-length bit would be impractical. Right-hand cut orientation is standard. This bit is a single-piece unit sold individually.

Screw machine length drill bits are commonly used in manufacturing, fabrication, plumbing rough-in, electrical work, and HVAC installation where shorter bit length provides better rigidity and reduced deflection in close-clearance drilling. The 1/8 inch diameter is frequently used for pilot holes, sheet metal penetrations, and access holes in light-gauge steel and copper. General-purpose grade makes this bit appropriate for intermittent or production use across a variety of base materials encountered in trade work.

Key Features

• High-speed steel construction provides durability across a range of common drilling materials
• 118-degree drill point angle suits general-purpose drilling in metal, wood, and plastic
• Screw machine length body at 1-7/8 inches OAL offers improved rigidity over jobber-length bits
• Bright uncoated finish for straightforward inspection and regrinding
• Right-hand cut for use with standard drill chucks and drivers
• Compact 7/8 inch flute length suited to shallow drilling applications

Compatibility

Designed as a general-purpose screw machine length drill bit compatible with standard 3-jaw drill chucks accepting 1/8 inch round shanks, including hand drills, drill presses, and CNC turret equipment.

Installation Notes

This bit is installed and used by machinists, electricians, plumbers, and HVAC technicians in both shop and field settings. Secure the shank firmly in the chuck before operation and ensure the workpiece is clamped or fixtured to prevent movement. Use appropriate cutting fluid when drilling ferrous metals to extend bit life. Inspect the cutting edges before each use and replace or regrind if the point shows visible wear or chipping.