Cleveland C12173 Taper Shank Drill Bit 7/16 in 1MT Hss

Product Description

The CLEVELAND C12173 is a taper shank drill bit designed for general-purpose drilling in metal fabrication, maintenance, and industrial machining applications. Built from high-speed steel with an oxide finish, it features a 7/16-inch cutting diameter and a 118-degree standard point angle with web thinning for improved centering and reduced thrust at entry. The 1MT (Morse Taper 1) shank seats directly into compatible taper-socket spindles on drill presses and lathes, eliminating the need for a separate chuck. Machinists, tool-and-die technicians, and maintenance mechanics are the primary installers of this bit in production and repair settings.

This bit is suited for through-hole and blind-hole drilling in steel, cast iron, aluminum, and similar materials where a standard spiral-flute, right-hand cutting geometry is appropriate. The 3-7/8-inch flute length accommodates moderate-depth holes, while the 7-1/4-inch overall length provides reach clearance on standard drill press tables. It is a general-purpose tool appropriate for both job-shop and light production use where a 1MT spindle is available.

Key Features

• 7/16-inch (0.4375-inch) cutting diameter with tight tolerance of +0.0000 to -0.0010 inches
• 118-degree standard point angle with web thinning for improved bite and reduced walking
• High-speed steel construction with oxide finish for corrosion resistance and reduced friction
• 1MT Morse Taper shank for direct spindle mounting without a drill chuck
• Right-hand spiral flute with regular helix for efficient chip evacuation
• Conforms to ASME B94.11M dimensional standards

Compatibility

Designed to fit any drill press, lathe, or milling machine spindle configured for a No. 1 Morse Taper (1MT) socket. Suitable for general-purpose drilling in ferrous and non-ferrous metals.

Installation Notes

Installation is performed by machinists or maintenance mechanics familiar with machine tool operation. Power down and lock out the machine before seating or removing the taper shank. Clean both the shank and the spindle socket of chips and oil before insertion to ensure full taper contact and prevent slippage under load. Do not use a chuck adapter unless it is rated for the 1MT taper designation.