Hertel 89323729 Taper Shank Drill Bit 19/64 in 1MT Hss

Product Description

The HERTEL 89323729 is a taper shank drill bit designed for general-purpose drilling in metal, wood, and similar materials. It accepts a No. 1 Morse Taper (1MT) shank, making it compatible with drill presses, lathes, and milling machines equipped with a matching taper socket. The cutting diameter measures 19/64 inches (0.2969 inches decimal), with a 118-degree conventional split-point angle suited for starting on flat and curved surfaces. The bit is manufactured from high-speed steel (HSS) with an oxide finish that provides basic lubricity and corrosion resistance during normal shop use. Machinists and tool-and-die technicians are the primary installers for this type of tooling.

This drill bit is used in machine shop, production, and maintenance environments where taper shank tooling is the standard. The 1MT shank seats directly into compatible spindle sockets without a separate chuck, reducing runout and improving rigidity for precise hole-making. The flute length of 3.125 inches (3-1/8 inches) accommodates moderate-depth drilling operations. Its general-purpose classification makes it appropriate for ferrous and non-ferrous metals, plastics, and composite materials in both job-shop and light-production settings.

Key Features

• 19/64 inch (0.2969 inch decimal) cutting diameter for precise hole sizing
• No. 1 Morse Taper (1MT) shank for direct spindle mounting without a chuck
• 118-degree point angle suits general-purpose drilling across common materials
• High-speed steel construction provides toughness and heat resistance at standard cutting speeds
• Oxide finish adds basic lubricity and surface protection
• 3-1/8 inch flute length supports moderate-depth holes in a single pass

Compatibility

Designed for use in drill presses, lathes, and milling machine spindles fitted with a No. 1 Morse Taper socket. Verify taper designation on the machine spindle before installation.

Installation Notes

Installation is performed by machinists or maintenance technicians familiar with taper shank tooling. Power down and lock out the machine before seating or removing the taper shank. Clean both the shank taper and the spindle socket bore of chips, oil, and debris before inserting to ensure full contact and prevent fretting. Use a proper drift and drift slot to remove the bit — never strike the spindle housing directly.