Hertel 89321905 Screw Machine Drill Bit Wire 7 Hss

Product Description

The HERTEL 89321905 is a screw machine length drill bit designed for general-purpose drilling in metal, wood, and plastic. Built from high-speed steel (HSS), it delivers reliable cutting performance in production and maintenance environments. The 118-degree split point geometry promotes accurate starting without a center punch on most materials. At 2.25 inches overall length, the shortened flute-to-shank ratio of screw machine geometry improves rigidity and reduces deflection in short-travel applications such as drill press work, CNC turret drilling, and manual machine operations. This bit is sized to wire gauge number 7, equivalent to 0.2010 inches in decimal, and is finished bright uncoated for standard-duty use. Licensed machinists, toolroom technicians, and maintenance mechanics are the typical end users.

Screw machine length bits are a standard choice when working in confined spaces or when a stub-length tool is required for rigidity. The HERTEL 89321905 fits conventional drill chucks and quick-change collet systems that accept round shanks in the 0.2000 to 0.2500 inch decimal size range. It is well suited for repetitive hole drilling in sheet metal, structural steel, aluminum, and similar materials encountered in fabrication, HVAC rough-in, and mechanical contracting work. The right-hand cut direction is compatible with standard forward-rotating spindles on all common drill presses, lathes, and hand drills.

Key Features

• Wire gauge size 7 (0.2010 inches decimal) for precise hole sizing
• 118-degree drill point angle for general-purpose material entry
• High-speed steel construction for durability across ferrous and non-ferrous materials
• Screw machine length at 2.25 inches OAL improves rigidity and reduces runout
• Bright uncoated finish suitable for standard-duty drilling applications
• Right-hand cut compatible with all standard forward-rotating spindles

Compatibility

Designed as a general-purpose screw machine length drill bit compatible with any drill press, CNC turret, lathe tailstock, or hand drill chuck accepting shanks in the 0.2000 to 0.2500 inch decimal size range.

Installation Notes

Installation is performed by licensed machinists, toolroom technicians, or qualified maintenance mechanics. Secure the bit firmly in the chuck or collet before operation and verify that the spindle is at a full stop before changing tooling. Use appropriate cutting fluid for ferrous metals to extend tool life and maintain hole quality. Always wear eye protection and ensure workpieces are properly clamped before drilling.