Hertel 89321640 Screw Machine Drill Bit Wire 33 Hss

Product Description

The HERTEL 89321640 is a screw machine length drill bit sized to wire gauge 33, with a decimal diameter of 0.113 inches. It is machined from high-speed steel and carries an uncoated bright finish. The 118-degree split-free point geometry suits general-purpose drilling in metals, plastics, and composites. The shorter-than-standard overall length of 1-7/8 inches increases rigidity and reduces deflection in tight-clearance drilling operations. Right-hand cut. This bit is a single-piece tool intended for use in drill presses, CNC machining centers, and handheld power drills where a screw machine length profile is required.

Screw machine length drill bits are a standard tool in machine shops, maintenance operations, and production environments where stub-length rigidity is preferred over jobber-length reach. Wire size 33 at 0.113 inches decimal is commonly used for tapping pilot holes, clearance holes in sheet metal, and close-tolerance work in light manufacturing. General-purpose grade makes it suitable for a wide range of ferrous and non-ferrous materials in both job-shop and field-service applications.

Key Features

• Wire size 33 — 0.113 inches decimal diameter
• 118-degree drill point angle for general-purpose material entry
• High-speed steel construction for durability across ferrous and non-ferrous materials
• Bright/uncoated finish — re-sharpenable and inspection-friendly
• 1-7/8 inches overall length provides stub-length rigidity to reduce deflection
• Right-hand cut, 7/8 inch flute length

Compatibility

Designed as a general-purpose screw machine length drill bit compatible with standard drill chucks and collets accepting round-shank bits in the 0.100 to 0.150 inch decimal size range.

Installation Notes

Installation is performed by machinists, tool-and-die technicians, and maintenance professionals. Secure the bit firmly in the chuck or collet before operation and confirm the workpiece is clamped to prevent movement. Use appropriate cutting fluid for the material being drilled to extend tool life and maintain hole quality. Inspect the cutting edges for wear or chipping before each use and replace or resharpen as needed to maintain tolerance.