Hertel 89321681 Screw Machine Drill Bit Wire 27 Hss

Product Description

The HERTEL 89321681 is a screw machine length drill bit sized to wire gauge 27, equivalent to 0.1440 inches in decimal. Manufactured from high-speed steel with a bright, uncoated finish, this bit features a 118-degree split-point angle suited for general-purpose drilling in metal, wood, and plastics. The shortened flute length of 1 inch and overall length of 2.0625 inches give it the rigidity and stability expected in screw machine and drill press applications. Right-hand cutting direction follows standard convention. This bit is sold individually and is appropriate for machinists, maintenance technicians, and production shops requiring consistent small-diameter hole work.

Screw machine length drill bits are used where a shorter, stiffer body is needed compared to jobber-length bits. The reduced length minimizes deflection and runout when drilling small-diameter holes in metals such as mild steel, aluminum, and brass. This bit fits standard drill chucks on benchtop drill presses, CNC drilling machines, and screw machines. It is well suited for production environments where high repeat-use cycling occurs on thin stock or shallow holes. General-purpose grade makes it a reliable everyday option for maintenance and light manufacturing operations.

Key Features

• Wire size 27 cutting diameter at 0.1440 inches for precision small-bore work
• 118-degree conventional point angle for broad material compatibility
• High-speed steel construction provides good wear resistance at standard cutting speeds
• Bright uncoated finish allows easy visual inspection of wear and edge condition
• Screw machine length body reduces deflection and improves hole location accuracy
• Right-hand cut matches standard drill chuck and machine spindle rotation

Compatibility

Designed as a general-purpose screw machine length drill bit compatible with any standard drill chuck accepting shank diameters appropriate for wire gauge 27 bits, including benchtop drill presses, production screw machines, and CNC drilling equipment.

Installation Notes

Installation and use of this drill bit should be performed by machinists or qualified maintenance technicians familiar with drill press or machine tool operation. Ensure the machine spindle is fully stopped and power is disconnected before changing bits or adjusting the chuck. Secure the workpiece firmly to prevent movement during drilling. Always wear appropriate eye protection and follow applicable shop safety standards when operating drilling equipment.