Hertel F.901.2143 Reduced Shank Drill Bit 27/32 in Hss

Product Description

The HERTEL F.901.2143 is a reduced shank twist drill bit designed for general-purpose metal drilling applications. It features a 27/32 inch (0.8438 inch decimal) cutting diameter paired with a 3/4 inch straight-cylindrical reduced shank, allowing it to fit standard drill chucks that could not accept the full cutting diameter. Manufactured from high-speed steel (HSS) with an oxide finish, the bit delivers reliable performance across a range of ferrous and non-ferrous materials. The 118-degree drill point angle is the industry-standard geometry for general metal and multi-material drilling. Licensed machinists, tool-and-die professionals, and maintenance technicians are the primary users of this bit.

This drill bit is suited for general-purpose drilling in machine shop environments, maintenance and repair operations, and fabrication settings. With a 3-inch flute length and a maximum drilling depth of 3.0 inches, it handles a wide range of hole depths in mild steel, aluminum, brass, and similar materials. The reduced shank design is a common choice when drilling larger-diameter holes with equipment that has a standard 3/4 inch or smaller chuck capacity.

Key Features

• 27/32 inch cutting diameter with 0.8438 inch decimal equivalent for precise sizing
• 3/4 inch straight-cylindrical reduced shank fits standard drill chucks
• 118-degree drill point angle for general-purpose metal drilling
• High-speed steel construction provides durability across common workpiece materials
• Oxide finish helps reduce friction and resist corrosion during use
• 3-inch flute length supports chip evacuation at depths up to 3.0 inches

Compatibility

Designed as a general-purpose reduced shank drill bit compatible with drill presses, lathes, and milling machines equipped with a 3/4 inch or larger straight-shank chuck capacity.

Installation Notes

Install and secure the shank fully in the drill chuck before operation, ensuring the chuck key is removed before powering the machine. Use appropriate cutting fluid for the workpiece material to extend bit life and improve finish quality. Follow applicable machine shop safety standards and equipment manufacturer guidelines when selecting feed rate and spindle speed for the cutting diameter. Inspect the cutting edges for wear or damage before each use.