Chicago-latrobe 53129 Taper Shank Drill Bit 1MT Hss

Product Description

The CHICAGO-LATROBE 53129 is a taper shank drill bit designed for precision hole-making in metal and general-purpose materials. Built from high speed steel with an oxide finish, it delivers consistent cutting performance across a wide range of shop and field applications. The bit measures 29/64 inches (0.4531 inches) in diameter with a 118-degree standard point angle and a web-thinned tip that reduces entry thrust and improves centering. Overall length is 7.5 inches with a flute length of 4.125 inches. It mounts via a 1MT (Morse Taper No. 1) shank for secure seating in compatible taper-socket spindles.

This drill bit is suited for general-purpose drilling in ferrous and non-ferrous metals, plastics, and similar materials. The regular spiral flute and right-hand cutting direction make it a standard choice for manual and CNC-assisted drill presses, milling machines, and lathes equipped with a No. 1 Morse Taper socket. Machinists, tool-and-die workers, and maintenance technicians commonly select this bit for repetitive production drilling where consistent diameter tolerance is required. The oxide finish provides mild corrosion resistance and reduces chip adhesion during cutting.

Key Features

• 29/64 inches (0.4531 inches) diameter with a tight tolerance of +0.0000 to -0.0010 inches for accurate hole sizing
• 1MT (Morse Taper No. 1) shank for positive drive and easy removal with a drift key
• 118-degree standard point angle with web-thinned tip reduces thrust and improves self-centering
• High speed steel construction handles general-purpose drilling without special coolant requirements
• Oxide finish resists light corrosion and minimizes chip welding
• Regular spiral flute with right-hand cutting direction for standard drill press and lathe use

Compatibility

Designed for use in any machine spindle or drill press quill equipped with a No. 1 Morse Taper (1MT) socket. Compatible with standard taper-socket chuck adapters and sleeves of the same designation.

Installation Notes

Installation and removal should be performed by a qualified machinist or maintenance technician. Power down and lock out the machine before inserting or removing the bit. Seat the taper shank fully into the spindle socket and verify there is no rocking or play before operation. Use a properly sized drift key and a soft mallet to eject the bit — never strike the spindle body directly.