Hertel 89321095 Screw Machine Drill Bit Wire 60 Hss

Product Description

The HERTEL 89321095 is a screw machine length drill bit designed for general-purpose drilling in metal, plastic, and wood. Manufactured from high-speed steel with a bright, uncoated finish, it cuts a 0.0400-inch diameter hole corresponding to wire gauge size 60. The 118-degree split point promotes accurate starting and reduces walking on entry. Its shortened overall length of 1.375 inches compared to jobber-length bits provides added rigidity in confined spaces and in screw machine and drill press applications. Right-hand cutting geometry makes it compatible with standard spindle rotation. Trade machinists, toolroom technicians, and production drillers keep these bits on hand for small-diameter work.

This bit is sized for wire gauge 60, placing it in the 0.0000 to 0.1000 inch decimal range. Screw machine length bits are commonly used in CNC screw machines, turret lathes, drill presses, and hand-held power tools where stub-length rigidity reduces deflection on small-diameter holes. They are well suited for tapping pilot holes, clearance holes for small fasteners, and precision layout work in sheet metal and light structural stock. Sold individually, with a minimum order quantity of 12 units per order.

Key Features

• Wire size 60 corresponds to 0.0400-inch decimal diameter for precise small-hole drilling
• 118-degree drill point angle for general-purpose material entry and accurate self-centering
• High-speed steel construction provides heat resistance during moderate-speed drilling operations
• Screw machine (stub) length at 1.375 inches overall reduces deflection and increases rigidity
• Bright, uncoated finish allows visual inspection of cutting edges and wear
• Right-hand cut compatible with all standard clockwise-rotating drill spindles

Compatibility

Designed as a general-purpose screw machine length drill bit suitable for standard drill chucks accepting wire-gauge tooling in the 0.0000 to 0.1000 inch decimal size range.

Installation Notes

Installation and use should be performed by machinists or qualified trade professionals familiar with small-diameter tooling. Secure the bit fully in a properly sized drill chuck before operation and verify chuck key removal prior to spindle engagement. Use cutting fluid appropriate for the workpiece material to extend bit life and improve hole finish. Discard bits showing chipped cutting edges or heat discoloration, as regrinding bits below 0.040 inches diameter is generally not practical.